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Sample records for expeditious enyne construction

  1. Efforts toward rapid construction of the cortistatin A carbocyclic core via enyne-ene metathesis

    KAUST Repository

    Baumgartner, Corinne; Ma, Sandy; Liu, Qi; Stoltz, Brian M.

    2010-01-01

    Our efforts toward the construction of the carbocylic core of cortistatin A via an enyne-ene metathesis are disclosed. Interestingly, an attempted S N2 inversion of a secondary mesylate in our five-membered D-ring piece gave a product with retention

  2. Efforts toward rapid construction of the cortistatin A carbocyclic core via enyne-ene metathesis

    KAUST Repository

    Baumgartner, Corinne

    2010-01-01

    Our efforts toward the construction of the carbocylic core of cortistatin A via an enyne-ene metathesis are disclosed. Interestingly, an attempted S N2 inversion of a secondary mesylate in our five-membered D-ring piece gave a product with retention of stereochemistry. © 2010 The Royal Society of Chemistry.

  3. Enyne Metathesis Catalyzed by Ruthenium Carbene Complexes

    DEFF Research Database (Denmark)

    Poulsen, Carina Storm; Madsen, Robert

    2003-01-01

    Enyne metathesis combines an alkene and an alkyne into a 1,3-diene. The first enyne metathesis reaction catalyzed by a ruthenium carbene complex was reported in 1994. This review covers the advances in this transformation during the last eight years with particular emphasis on methodology...

  4. Theoretical investigation of the photochemical C2-C6 cyclisation of enyne-heteroallenes.

    Science.gov (United States)

    Spöler, Carsten; Engels, Bernd

    2003-10-06

    Herein we discuss computations that explain experimental results regarding a highly efficient triplet analogue of the C(2)-C(6) cyclisation of enyne-heteroallenes recently discovered by Schmittel and co-workers.1 To shed some light on the reasons for the differences found between enyne-carbodiimides, enyne-ketenimines and enyne-allenes, we have computed the reaction profiles of the C(2)-C(6) and of the C(2)-C(7) cyclisations for various model compounds, assuming that the reactions take place on the lowest-lying triplet surfaces. Our results nicely explain the differences and the unexpected high efficiency found for the enyne-carbodiimides. The differences between enyne-carbodiimides and enyne-ketenimines prove to be due to differences in the shapes of the corresponding triplet surfaces. In contrast to the enyne-carbodiimides, for which our calculations predict that a direct cyclisation to the biradical intermediates should occur after the vertical excitation, the enyne-ketenimines relax into a local minimum on the triplet surface. As a consequence, further reaction channels are opened. Our computations indicate that enyne-allene compounds do not react because the necessary excitation energy lies outside the range of the employed triplet photosensitizer. Finally, the close agreement between our results and the experimental findings indicates that the underlying reasons for the differences in the photochemical behaviour of enyne-carbodiimides, enyne-ketenimines and enyne-allenes are related to differences in the electronic structures of the parent systems, while substituent effects are less important.

  5. Carbohydrate carbocyclization by a zinc-mediated tandem reaction and ring-closing enyne metathesis

    DEFF Research Database (Denmark)

    Poulsen, Carina Storm; Madsen, Robert

    2002-01-01

    reaction, an amino group can be introduced in the 1,7-enyne products. Addition of 2-TMS-ethynylcerium(III) chloride after the reductive ring-opening produces the corresponding 1,6-enynes. Further annulation of the product 1,3-dienes can be achieved through a Diels-Alder reaction with good control of stereo...

  6. 34 CFR 101.114 - Expeditious treatment.

    Science.gov (United States)

    2010-07-01

    ... 34 Education 1 2010-07-01 2010-07-01 false Expeditious treatment. 101.114 Section 101.114 Education Regulations of the Offices of the Department of Education OFFICE FOR CIVIL RIGHTS, DEPARTMENT OF... § 101.114 Expeditious treatment. Requests for expeditious treatment of matters pending before the...

  7. 45 CFR 81.114 - Expeditious treatment.

    Science.gov (United States)

    2010-10-01

    ... 45 Public Welfare 1 2010-10-01 2010-10-01 false Expeditious treatment. 81.114 Section 81.114... HEARINGS UNDER PART 80 OF THIS TITLE Judicial Standards of Practice § 81.114 Expeditious treatment. Requests for expeditious treatment of matters pending before the responsible Department official or the...

  8. 38 CFR 18b.93 - Expeditious treatment.

    Science.gov (United States)

    2010-07-01

    ... 38 Pensions, Bonuses, and Veterans' Relief 2 2010-07-01 2010-07-01 false Expeditious treatment. 18b.93 Section 18b.93 Pensions, Bonuses, and Veterans' Relief DEPARTMENT OF VETERANS AFFAIRS... Judicial Standards of Practice § 18b.93 Expeditious treatment. Requests for expeditious treatment of...

  9. Synthetic studies on taxanes: A domino-enyne metathesis/Diels ...

    Indian Academy of Sciences (India)

    Abstract. A domino enyne cross-metathesis/intramolecular Diels-Alder reaction has been successfully used to synthesize a bicyclo[5.3.1] undecene, corresponding to AB-ring of taxol without the gem dimethyl group.

  10. Synthesis of enyne and aryl vinyl sulfoxides: functionalization via Pummerer rearrangement.

    Science.gov (United States)

    Souza, Frederico B; Shamim, Anwar; Argomedo, Luiz M Z; Pimenta, Daniel C; Stefani, Hélio A

    2015-11-01

    An efficient methodology for the synthesis of aryl-substituted vinyl sulfoxides through direct substitution of aryl-substituted alkynyl grignard reagents on menthyl-p-toluenesulfinate followed by Suzuki-Miyaura cross-coupling reaction has been developed. It has also been described that the reaction of alkyl-substituted and cycloalkyl-substituted alkynyl grignard reagents with menthyl-p-toluenesulfinate led to two products, i.e., alkynyl sulfoxide derivatives, as a result of substitution, and enyne sulfoxide derivatives, which resulted from substitution followed by Michael type addition. It was possible to selectively synthesize the enyne sulfoxide derivatives by changing the concentration of the grignard reagent. These alkenyl sulfoxides were transformed into the corresponding [Formula: see text]-thio aldehydes in high yields via additive Pummerer rearrangement.

  11. Transition metal-catalyzed couplings of alkynes to 1,3-enynes: modern methods and synthetic applications.

    Science.gov (United States)

    Trost, Barry M; Masters, James T

    2016-04-21

    The metal-catalyzed coupling of alkynes is a powerful method for the preparation of 1,3-enynes, compounds that are of broad interest in organic synthesis. Numerous strategies have been developed for the homo- and cross coupling of alkynes to enynes via transition metal catalysis. In such reactions, a major issue is the control of regio-, stereo-, and, where applicable, chemoselectivity. Herein, we highlight prominent methods for the selective synthesis of these valuable compounds. Further, we illustrate the utility of these processes through specific examples of their application in carbocycle, heterocycle, and natural product syntheses.

  12. Transition metal-catalyzed carbocyclization of nitrogen and oxygen-tethered 1,n-enynes and diynes: synthesis of five or six-membered heterocyclic compounds.

    Science.gov (United States)

    Zhang, Di-Han; Zhang, Zhen; Shi, Min

    2012-10-25

    Cycloisomerization of 1,n-enynes and diynes is a powerful method in organic synthesis to access heterocyclic compounds and has drawn increasing attention from organic chemists. In this paper, we attempted to summarize our recent results on the transition metal-catalyzed cycloisomerization to synthesize five or six-membered heterocyclic compounds using 1,n-enynes and diynes having a propargylic ester moiety. First, we will describe the synthesis of 2,3-disubstituted 3-pyrrolines via gold catalyzed cycloisomerization of 1,6-diynes. In addition, we will also disclose a novel silver catalyzed tandem 1,3-acyloxy migration/Mannich-type addition/elimination of the sulfonyl group of N-sulfonylhydrazone-propargylic esters to 5,6-dihydropyridazin-4-one derivatives. Furthermore, we will introduce three interesting examples of the synthesis of bicyclic compounds via titanium or rhodium catalyzed carbocyclization of enynes. In this context, we have presented that 1,n-enynes and diynes containing propargylic esters are highly reactive and useful starting materials for the cycloisomerization catalyzed by a transition metal catalyst.

  13. 28 CFR 15.2 - Expeditious delivery of process and pleadings.

    Science.gov (United States)

    2010-07-01

    ... 28 Judicial Administration 1 2010-07-01 2010-07-01 false Expeditious delivery of process and pleadings. 15.2 Section 15.2 Judicial Administration DEPARTMENT OF JUSTICE CERTIFICATION AND DECERTIFICATION... § 15.2 Expeditious delivery of process and pleadings. (a) Any Federal employee against whom a civil...

  14. Two Novel Thermal Biradical Cyclizations of Enyne-Ketenimines: Theory, Experiment, and Synthetic Potential.

    Science.gov (United States)

    Schmittel, Michael; Steffen, Jens-Peter; Wencesla Ángel, Miguel Á; Engels, Bernd; Lennartz, Christian; Hanrath, Michael

    1998-06-19

    Both benzocarbazoles and quinolines can be synthesized from enyne ketenimines 1 generated in situ via biradical intermediates (see reaction below). Which of the heterocyclic ring systems is formed depends on the choice of the substituent R 1 at the alkyne terminus. © 1998 WILEY-VCH Verlag GmbH, Weinheim, Fed. Rep. of Germany.

  15. Intermolecular rhodium-catalyzed [2 + 2 + 2] carbocyclization reactions of 1,6-enynes with symmetrical and unsymmetrical alkynes†

    Science.gov (United States)

    Andrew Evans, P.; Sawyer, James R.; Lai, Kwong Wah; Huffman, John C.

    2006-01-01

    The crossed intermolecular rhodium-catalyzed [2 + 2 + 2] carbocyclization of carbon and heteroatom tethered 1,6-enynes can be accomplished with symmetrical and unsymmetrical alkynes, to afford the corresponding bicyclohexadienes in an efficient and highly selective manner. PMID:16075089

  16. NETWORK CENTRISM OPTIMIZATION OF EXPEDITIOUS SERVICE OF ELEMENTS OF THE POWER SUPPLY SYSTEM

    Directory of Open Access Journals (Sweden)

    Ye.I. Sokol

    2016-06-01

    Full Text Available Purpose. Development of precision selection criteria of options of technical realization of effective active and adaptive system of expeditious service of elements of a power supply system in the conditions of network-centric management. Methodology. In development of power supply systems their evolution from the elementary forms using elementary network technologies and models of interactions in power to more irregular shapes within the concept of Smart Grid with elements of network-centric character is observed. This direction is based on Internet-technologies of the last generation, and realize models of power activity which couldn't be realized before. Results. The number of possible options of active and adaptive system of expeditious service of elements of a power supply system is usually rather big and it is difficult to choose the acceptable option by direct search. Elimination of admissible options of the technical realization constructed on the principles of a network centrism means application of the theory of multicriteria optimization from a position of discrete programming. The basis of procedure of elimination is made by algorithm of an assessment of system by criterion of accuracy. Originality. The case of an assessment of the precision characteristic of system at restrictions for the set accuracy is connected with need of decomposition of requirements of all system in general and on separate subsystems. For such decomposition the ratios connecting the accuracy of functioning of a separate subsystem with variations of parameters of all system, and also with precision characteristics of subsystems of the lower levels influencing this subsystem are received. Practical value. In the conditions of the network-centric organization of management of expeditious service of elements of a power supply system elimination of options of subsystems when using precision criterion allows to receive the maximum number of essentially possible

  17. A metal-catalyzed enyne-cyclization step for the synthesis of bi- and tricyclic scaffolds amenable to molecular library production

    DEFF Research Database (Denmark)

    Wu, Peng; Cohrt, Anders Emil O'Hanlon; Petersen, Rico

    2016-01-01

    A facile metal-catalyzed diversification step for the synthesis of novel bi- and tricyclic scaffolds from enyne substrates is reported in this study. From a single starting material, topologically diverse scaffolds for library synthesis can be generated and decorated in a few steps. The methodology...

  18. Tandem cross enyne metathesis (CEYM)-intramolecular Diels-Alder reaction (IMDAR). An easy entry to linear bicyclic scaffolds.

    Science.gov (United States)

    Miró, Javier; Sánchez-Roselló, María; Sanz, Álvaro; Rabasa, Fernando; Del Pozo, Carlos; Fustero, Santos

    2015-01-01

    A new tandem cross enyne metathesis (CEYM)-intramolecular Diels-Alder reaction (IMDAR) has been carried out. It involves conjugated ketones, esters or amides bearing a remote olefin and aromatic alkynes as the starting materials. The overall process enables the preparation of a small family of linear bicyclic scaffolds in a very simple manner with moderate to good levels of diastereoselectivity. This methodology constitutes one of the few examples that employ olefins differently than ethylene in tandem CEYM-IMDAR protocols.

  19. Tandem cross enyne metathesis (CEYM–intramolecular Diels–Alder reaction (IMDAR. An easy entry to linear bicyclic scaffolds

    Directory of Open Access Journals (Sweden)

    Javier Miró

    2015-08-01

    Full Text Available A new tandem cross enyne metathesis (CEYM–intramolecular Diels–Alder reaction (IMDAR has been carried out. It involves conjugated ketones, esters or amides bearing a remote olefin and aromatic alkynes as the starting materials. The overall process enables the preparation of a small family of linear bicyclic scaffolds in a very simple manner with moderate to good levels of diastereoselectivity. This methodology constitutes one of the few examples that employ olefins differently than ethylene in tandem CEYM–IMDAR protocols.

  20. Borostannylation of Alkynes and Enynes. Scope and Limitations of the Reaction and Utility of the Adducts

    Science.gov (United States)

    Singidi, Ramakrishna Reddy; RajanBabu, T. V.

    2010-01-01

    The utility of the bis-metallating reagent 1,3-dimethyl-2-trimethylstannyl-2-bora-1,3-diazacyclopentane (1) has not been fully realized because of the hydrolytic instability of the products derived from catalyzed vicinal syn-additions to alkynes. The isolation of variety of such adducts derived from alkynes (and also from hitherto unreported additions to 1,3-enynes) as stable boron pinacolates is reported. Examples of the applications of resulting products in tandem cross-coupling reactions and as dienes in Diels-Alder reactions are illustrated. PMID:20459076

  1. An Expeditious Stereoselective Synthesis of (−)-Pinidinone from Ethyl Acetoacetate

    International Nuclear Information System (INIS)

    Damodar, Kongara; Jun, Jong-Gab

    2016-01-01

    An expeditious stereoselective synthesis of a naturally occurring 2,6-disubstituted piperidine alkaloid, (−)-pinidinone, has been accomplished with an overall yield of 31% in total eight steps. The synthesis involves ethyl acetoacetate as the starting material and the stereoselective α-aminoallylation of aldehyde with (S)-tert-butanesulfinamide, allyl bromide, and indium and Grubbs' olefin cross-metathesis as the pivotal steps.

  2. A facile stereospecific synthesis of (Z)-2-sulfonyl-substituted 1,3-enynes via Sonogashira coupling of (E)-α-iodovinyl sulfones with 1-alkynes

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    (E)-α-Iodovinyl sulfones 1 underwent the Sonogashira coupling reactions with terminal alkynes 2 in piperidine at room temperature in the presence of 5 mol% of Pd(PPh3)4 and 10 mol% of CuI to stereospecifically afford the corresponding (Z)-2-sulfonyl-substituted 1,3-enynes 3 in high yields.(C) 2007 Ming Zhong Cai. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.

  3. Studies on the selectivity of the reaction of (CO){sub 5}W=C(aryl)H with enynes: transfer of the carbene ligand to the C=C Bond versus insertion of the C triple bond C into the W=C Bond

    Energy Technology Data Exchange (ETDEWEB)

    Fischer, H.; Volkland, H.P.; Stumpf, R.

    1996-10-01

    The strongly electrophilic monophenylcarbene complex [(CO){sub 5}W=C(Ph)H] (2a) reacts with the enynes H-C triple bond C-R(R=-C(Me)=CH{sub 2})(3), -C{sub 6}H{sub 4}-CH=CH{sub 2}-p (5) and subsequently with PMe{sub 3} to form the C{sub a}lpha-PMe{sub 3} adducts of the vinylidene complexes [(CO){sub 5}W-{l_brace}C(PMe{sub 3})=CH-C{sub 3}H{sub 3}(Me)Ph{r_brace}] (4) and [(CO){sub 5}W {l_brace}C(PMe{sub 3})=CH-C{sub 6}H{sub 4}-C{sub 3}H{sub 4}Ph{r_brace}] (6). The reaction very likely proceeds by transfer of the carbene ligand to the C=C bond of the enyne to form a cyclopropyl-substituted alkyne complex which is in equilibrium with its vinylidene isomer.

  4. Palladium-catalyzed regio- and stereoselective cross-addition of terminal alkynes to ynol ethers and synthesis of 1,4-enyn-3-ones.

    Science.gov (United States)

    Babu, Madala Hari; Dwivedi, Vikas; Kant, Ruchir; Reddy, Maddi Sridhar

    2015-03-16

    Conjugated enynes, enol ethers, and enynones are versatile building blocks that can be elaborated by a wide variety of synthetic transformations. The selective synthesis of such units is a prerequisite for their effective utilization. The synthesis of conjugated 2-phenoxyenynes through a palladium-catalyzed cross-addition of terminal alkynes to phenylethynyl ethers (hydroalkynylation) is now presented. The reaction is highly regio-, stereo-, and chemoselective, and shows excellent tolerance toward functional groups. The addition further features very mild reaction conditions (room temperature) and an inexpensive catalytic system (without a ligand and with a cheaply available Pd catalyst). The thus synthesized enynyl ethers with allylic hydroxy tethers, which survived the reaction, were shown to be ready precursors for valuable 1-en-4-yn-3-ones. © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  5. Rh-Catalyzed (5+2) Cycloadditions of 3-Acyloxy-1,4-enynes and Alkynes: Computational Study of Mechanism, Reactivity, and Regioselectivity

    Science.gov (United States)

    Xu, Xiufang; Liu, Peng; Shu, Xing-zhong; Tang, Weiping; Houk, K. N.

    2013-01-01

    The mechanism of Rh-catalyzed (5+2) cycloadditions of 3-acyloxy-1,4-enyne (ACE) and alkynes is investigated using density functional theory calculations. The catalytic cycle involves 1,2-acyloxy migration, alkyne insertion, and reductive elimination to form the cycloheptatriene product. In contrast to the (5+2) cycloadditions with vinylcyclopropanes (VCP), in which alkyne inserts into a rhodium-allyl bond, alkyne insertion into a Rh–C(sp2) bond is preferred. The 1,2-acyloxy migration is found to be the rate-determining step of the catalytic cycle. The electron-rich p-dimethylaminobenzoate substrate promotes 1,2-acyloxy migration and significantly increases the reactivity. In the regioselectivity-determining alkyne insertion step, the alkyne substituent prefers to be distal to the forming C–C bond and thus distal to the OAc group in the product. PMID:23725341

  6. Rh(I-catalyzed intramolecular [2 + 2 + 1] cycloaddition of allenenes: Construction of bicyclo[4.3.0]nonenones with an angular methyl group and tricyclo[6.4.0.01,5]dodecenone

    Directory of Open Access Journals (Sweden)

    Chisato Mukai

    2011-04-01

    Full Text Available The [RhCl(COdppp]2-catalyzed intramolecular carbonylative [2 + 2 + 1] cycloaddition of allenenes was developed to prepare bicyclo[4.3.0]nonenones possessing a methyl group at the ring junction, which is difficult to achieve by the Pauson–Khand reaction of the corresponding enynes. This method also provided a new procedure for the construction of the tricyclo[6.4.0.01,5]dodecenone framework in a satisfactory yield.

  7. Microwave Assisted Expeditious and Green Cu(II-Clay Catalyzed Domino One-Pot Three Component Synthesis of 2H-indazoles

    Directory of Open Access Journals (Sweden)

    Bashir Ahmad Dar

    2018-01-01

    How to Cite: Dar, B.A., Safvi, S.W., Rizvi, M.A. (2018. Microwave Assisted Expeditious and Green Cu(II-Clay Catalyzed Domino One-Pot Three Component Synthesis of 2H-indazoles. Bulletin of Chemical Reaction Engineering & Catalysis, 13 (1: 82-88 (doi:10.9767/bcrec.13.1.963.82-88

  8. Base-catalyzed tandem Michael/dehydro-Diels-Alder reaction of α,α-dicyanoolefins with electron-deficient 1,3-conjugated enynes: a facile entry to angularly fused polycycles.

    Science.gov (United States)

    Zhang, Mingrui; Zhang, Junliang

    2014-01-07

    Angularly fused carbocyclic frameworks and their heteroatom-substituted analogues exist in many natural products that display a broad and interesting range of biological activities. Preparation of polycyclic products by cycloaddition reactions have been the long-standing hot topic in the synthetic community. Dehydro-Diels-Alder (DDA) reactions are one class of dehydropericyclic reactions that are derived conceptually by systematic removal of hydrogen atom pairs. A base-promoted tandem Michael addition and DDA reaction of α,α-dicyanoolefins with electron-deficient 1,3-conjugated enynes was realized in which a DDA reaction takes place between the arylalkynes and electron-deficient tetrasubstituted olefin. The control experiments support the stepwise anionic reaction pathway rather than the concerted reaction pathway. Copyright © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  9. Stereocomplementary Construction of Optically Active Bicyclo[4.3.0]nonenone Derivatives.

    Science.gov (United States)

    Mukai, Chisato; Kim, Jin Sung; Sonobe, Hiroshi; Hanaoka, Miyoji

    1999-09-03

    Treatment of (5S,6S)-5,6-bis(tert-butyldimethylsiloxy)-8-(substituted)oct-1-en-7-yne derivatives, prepared from diethyl L-tartrate, with Co(2)(CO)(8) afforded the corresponding cobalt-complexed enynes, which were subsequently exposed to the typical Pauson-Khand conditions to furnish highly stereoselectively or exclusively (2S,3S,6S)-2,3-bis(tert-butyldimethylsiloxy)-9-(substituted)bicyclo[4.3.0]non-1(9)-en-8-ones. On the other hand, (3S,4S)-1-(substituted)oct-7-en-1-yne-3,4-diol congeners produced, on exposure to the Pauson-Khand conditions, (2S,3S,6R)-2,3-dihydroxy-9-(substituted)bicyclo[4.3.0]-non-1(9)-en-8-one derivatives in a highly stereoselective manner. The newly developed procedure has been shown to be useful for construction of the 2,3-bis(oxygenated)-7-(substituted)bicyclo[4.3.0]non-6-en-8-one framework in a stereocomplementary as well as stereoselective fashion.

  10. General guidelines for safe and expeditious international transport of samples subjected to biological dosimetry assessment.

    Science.gov (United States)

    Di Giorgio, Marina; Radl, Analía; Taja, María R; Bubniak, Ruth; Deminge, Mayra; Sapienza, Carla; Vázquez, Marina; Baciu, Florian; Kenny, Pat

    2014-06-01

    It has been observed that victims of accidental overexposures show better chance of survival if they receive medical treatment early. The increased risk of scenarios involving mass casualties has stimulated the scientific community to develop tools that would help the medical doctors to treat victims. The biological dosimetry has become a routine test to estimate the dose, supplementing physical and clinical dosimetry. In case of radiation emergencies, in order to provide timely and effectively biological dosimetry assistance it is essential to guarantee an adequate transport of blood samples in principal, for providing support to countries that do not have biodosimetry laboratories. The objective of the present paper is to provide general guidelines, summarised in 10 points, for timely and proper receiving and sending of blood samples under National and International regulations, for safe and expeditious international transport. These guidelines cover the classification, packaging, marking, labelling, refrigeration and documentation requirements for the international shipping of blood samples and pellets, to provide assistance missions with a tool that would contribute with the preparedness for an effective biodosimetric response in cases of radiological or nuclear emergencies. © The Author 2014. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oup.com.

  11. Zinc mediated domino elimination-alkylation of methyl 5-iodopentofuranosides

    DEFF Research Database (Denmark)

    Hyldtoft, Lene; Poulsen, Carina Storm; Madsen, Robert

    1999-01-01

    5-Iodopentofuranosides are converted with zinc and allyl/propargyl bromide into dienes/enynes which are further used in carbohydrate annulation reactions.......5-Iodopentofuranosides are converted with zinc and allyl/propargyl bromide into dienes/enynes which are further used in carbohydrate annulation reactions....

  12. Characterization of traditional raw materials used in housing construction in Huambo region - Angola

    Science.gov (United States)

    Pedro, Elsa; Duarte, Isabel; Varum, Humberto; Pinho, António; Norman, Antónia

    2016-04-01

    The sustainability of buildings associated to the use of raw earth has motivated the studies and the development of techniques and methods in the context of this type of construction. In the region of Huambo, Angola, these construction techniques are widely used, especially for low-income families who represent the majority of the population. Much of the buildings in Huambo province are built with adobe. Due to the climate in this region, subtropical, hot and humid, with altitudes above 1000 meters and extensive river system, these buildings are particularly vulnerable to the action of water and develop, in many situations, early degradation. The Huambo Province is located in central Angola, has 36 km2 area and approximately 2 million inhabitants. This work aims to evaluate, by conducting in-situ tests, physical and mechanical properties of adobe blocks typically used in the construction of those buildings. The methodology is based on field campaigns where in-situ expeditious tests were performed in soils (smell test, color, touch, brightness, sedimentation, ball, hardness, etc.) and tests on adobes blocks made with traditional procedures, particularly in terms of durability and erodibility (erosion test at Geelong method; evaluation test of wet / dry cycle, applying the New Zealand standards 4297: 1998; 4297: 1998 and 4297: 1999). The results will contribute to the characterization of the geomaterials and methods used in construction with earth in Huambo Province, contributing to the improvement of these sustainable solutions, with a strong presence in this region. The results of this study will also contribute to the proposal of constructive solutions with improved performance characteristics, comfort, safety and durability.

  13. Olefin metathesis in nano-sized systems

    Directory of Open Access Journals (Sweden)

    Denise Méry

    2011-01-01

    Full Text Available The interplay between olefin metathesis and dendrimers and other nano systems is addressed in this mini review mostly based on the authors’ own contributions over the last decade. Two subjects are presented and discussed: (i The catalysis of olefin metathesis by dendritic nano-catalysts via either covalent attachment (ROMP or, more usefully, dendrimer encapsulation – ring closing metathesis (RCM, cross metathesis (CM, enyne metathesis reactions (EYM – for reactions in water without a co-solvent and (ii construction and functionalization of dendrimers by CM reactions.

  14. Stereoselective total syntheses of three Lycopodium alkaloids, (-)-magellanine, (+)-magellaninone, and (+)-paniculatine, based on two Pauson-Khand reactions.

    Science.gov (United States)

    Kozaka, Takashi; Miyakoshi, Naoki; Mukai, Chisato

    2007-12-21

    The total syntheses of (-)-magellanine, (+)-magellaninone, and (+)-paniculatine were completed from diethyl l-tartrate via the common intermediate in a stereoselective manner. The crucial steps in these syntheses involved two intramolecular Pauson-Khand reactions of enynes: the first Pauson-Khand reaction constructed the bicyclo[4.3.0] carbon framework, the corresponding A and B rings of these alkaloids in a highly stereoselective manner, whereas the second Pauson-Khand reaction stereoselectively produced the bicyclo[3.3.0]skeleton, which could be converted into the C and D rings of the target natural products.

  15. Preparation and Reaction Chemistry of Novel Silicon-Substituted 1,3-Dienes

    Directory of Open Access Journals (Sweden)

    Partha P. Choudhury

    2015-09-01

    Full Text Available 2-Silicon-substituted 1,3-dienes containing non transferrable groups known to promote transmetallation were prepared by Grignard chemistry and enyne metathesis. These dienes participated in one pot metathesis/Diels-Alder reactions in regio- and diastereoselective fashions. Electron-rich alkenes showed the fastest rates in metathesis reactions, and ethylene, a commonly used metathesis promoter slowed enyne metathesis. 2-Pyridyldimethylsilyl and 2-thienyldimethylsilyl substituted Diels-Alder cycloadducts participated in cross-coupling chemistry and the 2-thienyldimethylsilyl substituted cycloadducts underwent cross-coupling under very mild reaction conditions.

  16. Diversity-Oriented Approaches to Polycyclics and Bioinspired Molecules via the Diels-Alder Strategy: Green Chemistry, Synthetic Economy, and Beyond.

    Science.gov (United States)

    Kotha, Sambasivarao; Chavan, Arjun S; Goyal, Deepti

    2015-05-11

    We describe diverse approaches to various dienes and their utilization in the Diels-Alder reaction to produce a variety of polycycles. The dienes covered here are prepared by simple alkylation reaction or via the Claisen rearrangement or by enyne metathesis of alkyne or enyne building blocks. Here, we have also included the Diels-Alder chemistry of dendralenes, a higher analog of cross-conjugated dienes. The present article is inclusive of o-xylylene derivatives that are generated in situ starting with benzosultine or benzosulfone derivatives. The Diels-Alder reaction of these dienes with various dienophiles gave diverse polycyclic systems and biologically important targets.

  17. 7 CFR 1942.19 - Information pertaining to preparation of notes or bonds and bond transcript documents for public...

    Science.gov (United States)

    2010-01-01

    ... bond counsel firm which has experience in municipal financing with such investors as investment dealers... counsel may be more expeditious. However, it will be the decision of the applicant whether or not to... income tax statutes. (d) Interim financing from commercial sources during construction period for loans...

  18. 25 CFR 170.934 - Are alternative dispute resolution procedures available?

    Science.gov (United States)

    2010-04-01

    ... 25 Indians 1 2010-04-01 2010-04-01 false Are alternative dispute resolution procedures available... alternative dispute resolution (ADR) procedures is to provide an inexpensive and expeditious forum to resolve... (including for non-construction the mediation and alternative dispute resolution options listed in 25 U.S.C...

  19. Rhodium-catalyzed Chemo- and Regioselective Cross-dimerization of Two Terminal Alkynes

    Science.gov (United States)

    Xu, Hua-Dong; Zhang, Ren-Wei; Li, Xiaoxun; Huang, Suyu; Tang, Weiping; Hu, Wen-Hao

    2013-01-01

    Cross-dimerization of terminal arylacetylenes and terminal propargylic alcohols/amides has been achieved in the effect of a rhodium catalyst. This method features high chemo- and regioselectivities rendering convenient and atom economical access to functionalized enynes. PMID:23356993

  20. Synthesis of a novel chemotype via sequential metal-catalyzed cycloisomerizations

    Directory of Open Access Journals (Sweden)

    Bo Leng

    2012-08-01

    Full Text Available Sequential cycloisomerizations of diynyl o-benzaldehyde substrates to access novel polycyclic cyclopropanes are reported. The reaction sequence involves initial Cu(I-mediated cycloisomerization/nucleophilic addition to an isochromene followed by diastereoselective Pt(II-catalyzed enyne cycloisomerization.

  1. Catalysis with Gold Complexes Immobilised on Carbon Nanotubes by π-π Stacking Interactions: Heterogeneous Catalysis versus the Boomerang Effect.

    Science.gov (United States)

    Vriamont, Charles; Devillers, Michel; Riant, Olivier; Hermans, Sophie

    2013-09-02

    A new pyrene-tagged gold(I) complex has been synthesised and tested as a homogeneous catalyst. First, a simple 1,6-enyne was chosen as a model substrate for cyclisation by using different solvents to optimise the reaction conditions. The non-covalent immobilisation of our pyrene-tagged gold complex onto multi-walled carbon nanotubes through π-π stacking interactions was then explored to obtain a supported homogeneous catalyst. The heterogenised catalyst and its homogeneous counterpart exhibited similar activity in a range of enyne cyclisation reactions. Bearing in mind that π-π interactions are affected by temperature and solvent polarity, the reuse and robustness of the supported homogeneous catalyst was tested to explore the scope and limitations of the recyclability of this catalyst. Under the optimised conditions, recyclability was observed by using the concept of the boomerang effect. Copyright © 2013 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim.

  2. General Atomic's superconducting toroidal field coil concept

    International Nuclear Information System (INIS)

    Alcorn, J.; Purcell, J.

    1978-01-01

    General Atomic's concept for a superconducting toroidal field coil is presented. The concept is generic for large tokamak devices, while a specific design is indicated for a 3.8 meter (major radius) ignition/burn machine. The concept utilizes bath cooled NbTi conductor to generate a peak field of 10 tesla at 4.2 K. The design is simple and straightforward, requires a minimum of developmental effort, and draws extensively upon the perspective of past experience in the design and construction of large superconducting magnets for high energy physics. Thus, the primary emphasis is upon economy, reliability, and expeditious construction scheduling. (author)

  3. Journal of Chemical Sciences | Indian Academy of Sciences

    Indian Academy of Sciences (India)

    Home; Journals; Journal of Chemical Sciences. Krishna P Kaliappan. Articles written in Journal of Chemical Sciences. Volume 120 Issue 1 January 2008 pp 205-216. Synthetic studies on taxanes: A domino-enyne metathesis/Diels-Alder approach to the AB-ring · Krishna P Kaliappan Velayutham Ravikumar Sandip A Pujari.

  4. Reactions of ruthenium and osmium cluster carbonyls with heteroatom-substituted and functionalized alkynes

    International Nuclear Information System (INIS)

    Koridze, A.A.

    2000-01-01

    The results of studies of the reactions of ruthenium and osmium cluster carbonyls with metal (M = Re, Mn, Fe) alkynes, silylalkynes, propargyl alcohols and their derivatives, diynes, enynes, and ferrocenylacetylene are summarized. Intramolecular rearrangements in the cluster complexes including migrations of carbonyl, hydride, and hydrocarbon ligands and the metal core reorganization are considered [ru

  5. The status of RandD for the relativistic heavy ion collider at Brookhaven

    International Nuclear Information System (INIS)

    Forsyth, E.B.

    1989-01-01

    Formal development of the Relativistic Heavy Ion Collider (RHIC) has been funded for the past three years. Prototype superconducting magnets and cryostats have been tested. Detailed designs have been prepared for the arc sections, the insertion regions and injection and ejection systems. The rf system has undergone significant revisions in order to enhance the experimental capability of RHIC. Progress has been made with the design of detectors. We are putting in place a management information system in anticipation of an expeditious start of construction. 20 refs., 2 figs., 3 tabs

  6. The status of RandD for the relativistic heavy ion collider at Brookhaven

    Energy Technology Data Exchange (ETDEWEB)

    Forsyth, E.B.

    1989-01-01

    Formal development of the Relativistic Heavy Ion Collider (RHIC) has been funded for the past three years. Prototype superconducting magnets and cryostats have been tested. Detailed designs have been prepared for the arc sections, the insertion regions and injection and ejection systems. The rf system has undergone significant revisions in order to enhance the experimental capability of RHIC. Progress has been made with the design of detectors. We are putting in place a management information system in anticipation of an expeditious start of construction. 20 refs., 2 figs., 3 tabs.

  7. A construction process model for implementing constructability in construction

    NARCIS (Netherlands)

    Langkemper, J.; Al-Jibouri, S.; Reymen, I.M.M.J.; Maas, G.J.; Gassel, van F.

    2003-01-01

    In construction, failure of design professionals to consider how a builder will implement the design can result in scheduling problems, cost escalation, delays and disputes during the construction process. The integration of construction knowledge and experience during planning and design is termed

  8. Canadian pipeline contractors in holding pattern

    Energy Technology Data Exchange (ETDEWEB)

    Caron, G [Pe Ben Pipelines Ltd.; Osadchuk, V; Sharp, M; Stabback, J G

    1979-05-21

    A discussion of papers presented at a Pipe Line Contractors Association of Canada convention includes comments by G. Caron (Pe Ben Pipelines Ltd.) on the continued slack in big-inch pipeline construction into 1980 owing mainly to delayed U.S. and Canadian decisions on outstanding Alaska Highway gas pipeline issues and associated gas export bids and on the use of automatic welding for expeditious construction of the northern sections of the Alaska Highway pipeline; by V. Osadchuk (Majestic Wiley Contract. Ltd.) on the liquidation of surplus construction equipment because of these delays; by M. Sharp (Can. North. Pipeline Agency) on the need for close U.S. and Canadian governmental and industrial cooperation to permit an early 1980 start for construction of the prebuild sections of the Alaska pipeline; and by J. G. Stabback (Can. Natl. Energy Board) on the Alaska oil pipeline applications by Foothills Pipe Lines Ltd., Trans Mountain Pipe Line Co. Ltd., and Kitimat Pipe Line Ltd.

  9. Management for Construction Materials and Control of Construction Waste in Construction Industry: A Review

    OpenAIRE

    A. A. Gulghane; Prof P. V. Khandve

    2015-01-01

    In recent treads a wide range of building materials is available for the construction of civil engineering structures. The total cost of materials may be up to 60% or more of the total cost incurred in construction project dependent upon the type of project. Effective construction materials management is a key to success for a construction project. Construction waste is another serious problem in construction industry. A large and various types of construction waste with different...

  10. Expeditious, mechanochemical synthesis of BODIPY dyes

    Directory of Open Access Journals (Sweden)

    Laramie P. Jameson

    2013-04-01

    Full Text Available BODIPY dyes have been synthesized under solvent-free or essentially solvent-free conditions, within about 5 minutes in an open-to-air setup by using a pestle and mortar, with yields that are comparable to those obtained via traditional routes that typically require reaction times of several hours to days.

  11. Cold vacuum drying facility site evaluation report

    International Nuclear Information System (INIS)

    Diebel, J.A.

    1996-01-01

    In order to transport Multi-Canister Overpacks to the Canister Storage Building they must first undergo the Cold Vacuum Drying process. This puts the design, construction and start-up of the Cold Vacuum Drying facility on the critical path of the K Basin fuel removal schedule. This schedule is driven by a Tri-Party Agreement (TPA) milestone requiring all of the spent nuclear fuel to be removed from the K Basins by December, 1999. This site evaluation is an integral part of the Cold Vacuum Drying design process and must be completed expeditiously in order to stay on track for meeting the milestone

  12. NRC regulation of TVA. Hearings before the Subcommittee on Oversight and Investigations of the Committee on Energy and Commerce, House of Representatives, Ninety-Ninth Congress, Second Session, February 26, June 11, and October 1, 1986

    International Nuclear Information System (INIS)

    Anon.

    1987-01-01

    Nuclear Regulatory Commissioners, Tennessee Valley Authority (TVA) chairman Charles Dean, and members of both agencies, as well as representatives of review groups testified at a hearing on the performance of regulators in overseeing TVA's nuclear programs, all of which are inoperative. The witnesses reviewed certification, licensing, and inspection processes which reflect poor management on the part of NRC and indifference to TVA. Of major concern was the sacrifice of safety for expeditious construction. The hearing took place over three days in February, June, and October of 1986. Material submitted for the record follows the testimony of the 19 witnesses

  13. Sonogashira–Hagihara reactions of halogenated glycals

    Directory of Open Access Journals (Sweden)

    Dennis C. Koester

    2012-05-01

    Full Text Available Herein, we report on our findings of the Sonogashira–Hagihara reaction with 1-iodinated and 2-brominated glycals using several aromatic and aliphatic alkynes. This Pd-catalyzed cross-coupling reaction presents a facile access to alkynyl C-glycosides and sets the stage for a reductive/oxidative refunctionalization of the enyne moiety to regenerate either C-glycosidic structures or pyran derivatives with a substituent in position 2.

  14. Construction management

    CERN Document Server

    Pellicer, Eugenio; Teixeira, José C; Moura, Helder P; Catalá, Joaquín

    2014-01-01

    The management of construction projects is a wide ranging and challenging discipline in an increasingly international industry, facing continual challenges and demands for improvements in safety, in quality and cost control, and in the avoidance of contractual disputes. Construction Management grew out of a Leonardo da Vinci project to develop a series of Common Learning Outcomes for European Managers in Construction. Financed by the European Union, the project aimed to develop a library of basic materials for developing construction management skills for use in a pan-European context. Focused exclusively on the management of the construction phase of a building project from the contractor's point of view, Construction Management covers the complete range of topics of which mastery is required by the construction management professional for the effective delivery of new construction projects. With the continued internationalisation of the construction industry, Construction Management will be required rea...

  15. Diversity oriented approach to polycyclics via cross-enyne ...

    Indian Academy of Sciences (India)

    ... 35.4, 52.8, 94.3, 115.8, 126.4, 128.9,. 129.1, 132.1, 134.2, 137.4, 138.3, 139.0, 140.4, 141.7,. 169.7 ppm; Anal. Calcd for C20H19IO4: C, 53.35; H,. 4.25; found: C, 52.47; H, 3.19. 2.2j Dimethyl 3-(but-3-enyl)-5-ethoxy-2-(4-methoxypheyl- ulfonamido)-3-oxopropyl) phthalate (30): IR (Neat) νmax: 3055, 2985, 1737, 1266 cm.

  16. Construction history and construction management

    International Nuclear Information System (INIS)

    Agh, S.

    1999-01-01

    The process of pre-design and design preparation of the Mochovce NPP as well as the construction history of the plant is highlighted, including the financing aspect and problems arising from changes in the technological and other conditions of start-up of the reactor units. The results of international audits performed to improve the level of nuclear safety and implementation of the measures suggested are also described. The milestones of the whole construction process and start-up process, the control and quality system, and the methods of control and management of the complex construction project are outlined. (author)

  17. Constructing Aligned Assessments Using Automated Test Construction

    Science.gov (United States)

    Porter, Andrew; Polikoff, Morgan S.; Barghaus, Katherine M.; Yang, Rui

    2013-01-01

    We describe an innovative automated test construction algorithm for building aligned achievement tests. By incorporating the algorithm into the test construction process, along with other test construction procedures for building reliable and unbiased assessments, the result is much more valid tests than result from current test construction…

  18. Construction Management of Electromechanical Engineering Project in Petrochemical Construction

    Directory of Open Access Journals (Sweden)

    Xi Tao

    2017-03-01

    Full Text Available Petrochemical industry as a basic industry, occupies a pivotal position in the national economy, with the continuous development of science and technology, electromechanical automation in the petrochemical industry has been widely used to save a lot of labor but also greatly improve the oil Chemical industry production efficiency. Therefore, in the construction of petrochemical industry, mechanical and electrical engineering as part of it. It plays a vital role. Petrochemical industry with the production of high temperature and high pressure and flammable and explosive gas, can strengthen the construction of mechanical and electrical engineering specialization and construction management of scientific, has become the relationship between the smooth development of mechanical and electrical engineering and engineering quality of the key, A direct impact on the petrochemical construction of the overall construction quality. To this end, it is necessary for the construction of petrochemical construction of electromechanical engineering construction management to promote the construction of mechanical and electrical engineering management level gradually increased. This article on the machine Electric engineering project construction management were discussed with a view to the petrochemical construction in the relevant aspects of the need to provide reference for reference.

  19. Research on construction quality and improvement of assembly construction

    Science.gov (United States)

    Cheng, Fei

    2017-11-01

    Based on the acceleration of the urbanization process and the improvement of the quality of life of our residents, the demand for building construction has been increasing. In this context, the construction industry in order to promote the construction efficiency, quality improvement, to meet the needs of the development of the times to strengthen the new technology, the use of new technologies. At present, China’s engineering construction units in the process of carrying out the project to strengthen the use of assembly-type construction technology, which thus achieved for the traditional construction work low-level, high time-consuming issues, and promote the steady improvement of production efficiency. Based on this, this paper focuses on the analysis of the connotation of the assembly structure and analyzes the quality problems in the construction process of the construction projects and puts forward the improvement measures to promote the improvement of the building quality and the construction of the building Construction speed. Based on this, this paper analyzes the structural system and design of prefabricated building.

  20. Potential and Benefits of Building Information Modeling (BIM During Pre-Construction, Construction and Post Construction Stage

    Directory of Open Access Journals (Sweden)

    Aw Nien Wei

    2017-11-01

    Full Text Available The construction industry is the main economic support for all countries around the world in which continually adapting to meet competitive challenges around the global market. Nevertheless, the construction project is becoming much more complex and difficult to manage. This is because the construction project involves a large number of stakeholder, for example, the consultant companies, architects, engineers, building surveyors and quantity surveyors. The technology currently used in the construction industry is the AutoCAD (Automatic computeraided design. AutoCAD is a commercial software application for 2D and 3D computer-aided design (CAD and drafting develop by Autodesk. Generally, all the drawing design from Autocad will be exchanged among the stakeholder in the form of paper. Information exchanged among them mostly involves a lot of documents and drawings. This practice creates errors because of documents and drawings are mostly in a paper-based format that is not properly managed which results in miscommunication among them. Having wrong information in the construction process could hinder the productivity of projects because in a construction project information is one of the important construction materials. Building Information Modeling (BIM is one of the newly software in the architecture, engineering, and construction (AEC industries to ensure all parties receive the right information. BIM technology is also an intelligent model of a building constructed digitally in the way of 3D. The software will generate model containing the information needed to support the construction, fabrication, and procurement activities that needed to realize the building. This paper will discuss on potential and benefits of BIM during pre-construction stage, construction stage and during post construction stage

  1. Effect of Pre-Construction on Construction Schedule and Client Loyalty

    OpenAIRE

    Jong Hoon Kim; Hyun-Soo Lee; Moonseo Park; Min Jeong; Inbeom Lee

    2016-01-01

    Pre-construction is essential in achieving the success of a construction project. Due to the early involvement of project participants in the construction phase, project managers are able to plan ahead and solve issues well in advance leading to the success of the project and the satisfaction of the client. This research utilizes quantitative data derived from construction management projects in order to identify the relationship between pre-construction, construction schedule, and client sat...

  2. Sustainable Construction Risk Perceptions in the Kuwaiti Construction Industry

    Directory of Open Access Journals (Sweden)

    Dalya Ismael

    2018-06-01

    Full Text Available Sustainable construction is fundamentally different than traditional construction because it requires whole systems thinking, early collaboration across stakeholders, and core principles like reducing resource consumption, eliminating toxins, and applying life cycle costing. Construction professionals unfamiliar with this mindset and approach may perceive sustainable construction as risky. One of the global regions in need of more sustainable construction is the Middle Eastern and North African (MENA region. The MENA region is one of the fastest developing in the world. However, it is the slowest one in implementing sustainable construction practices. Kuwait, in particular, contributes 53% more carbon emissions per capita than the United States. To understand how the Kuwaiti construction industry perceives risks associated with more sustainable construction, a survey was developed with 52 risk elements in which 131 industry professionals responded. The results indicate that industry professionals perceive a lack of public awareness as the risk element with the highest probability of occurrence. The risk element with the highest possible negative impact on future projects is designers’ and contractors’ inexperience with sustainable construction. Other risks were found to include a high initial cost for materials and overall project costs. Educational interventions, changes in risk allocation, and behavioral science to reframe upfront costs as long-term savings are offered as possible solutions.

  3. Construction Managers’ Perception of the Factors Affecting Sustainability in Construction Projects

    OpenAIRE

    Reza Taheriattar; Morvarid Farzanehrafat

    2014-01-01

    Sustainable construction is a comprehensive concept which requires long-term planning. Moreover, construction managers play a key role in leading, planning and scheduling of a construction project. As a result, sustainability of construction projects can be affected by construction managers’ decisions. In addition, for greater development of sustainable construction, affecting factors should firstly be notified. Therefore, it seems necessary to investigate construction managers’ perception of...

  4. Expeditious synthesis of coumarin-pyridone conjugates molecules ...

    Indian Academy of Sciences (India)

    RAJNI KHAJURIA

    2017-09-06

    Sep 6, 2017 ... Compound 2k showed good inhibitory potential against the tested yeasts organisms. ... HO. O. Me. OH. Pavietin. Anti-fungal. N. O. ABT 719. Anti-bacterial. F. Me. N ...... 2-one1a-ounderwent NH4OAc catalyzed Michael addi-.

  5. Construction labor productivity during nuclear power plant construction

    International Nuclear Information System (INIS)

    Murray, W.B.

    1980-01-01

    There is no single satisfactory way to measure productivity in the construction industry. The industry is too varied, too specialized and too dependent upon vast numbers of interrelations between trades, contractors, designers and owners. Hence, no universally reliable indices for measuring construction productivity has been developed. There are problems that are generic to all large union-built nuclear power plants. The actions of any one owner cannot rectify the shortcomings of the construction industry. The generic problems are being identified, and many national organizations are attempting to make the construction industry more productive by recommending various changes

  6. Electrochemical construction

    Science.gov (United States)

    Einstein, Harry; Grimes, Patrick G.

    1983-08-23

    An electrochemical cell construction features a novel co-extruded plastic electrode in an interleaved construction with a novel integral separator-spacer. Also featured is a leak and impact resistant construction for preventing the spill of corrosive materials in the event of rupture.

  7. Construction mathematics

    CERN Document Server

    Virdi, Surinder; Virdi, Narinder Kaur

    2014-01-01

    Construction Mathematics is an introductory level mathematics text, written specifically for students of construction and related disciplines. Learn by tackling exercises based on real-life construction maths. Examples include: costing calculations, labour costs, cost of materials and setting out of building components. Suitable for beginners and easy to follow throughout. Learn the essential basic theory along with the practical necessities. The second edition of this popular textbook is fully updated to match new curricula, and expanded to include even more learning exercises. End of chapter exercises cover a range of theoretical as well as practical problems commonly found in construction practice, and three detailed assignments based on practical tasks give students the opportunity to apply all the knowledge they have gained. Construction Mathematics addresses all the mathematical requirements of Level 2 construction NVQs from City & Guilds/CITB and Edexcel courses, including the BTEC First Diploma in...

  8. Validating MEDIQUAL Constructs

    Science.gov (United States)

    Lee, Sang-Gun; Min, Jae H.

    In this paper, we validate MEDIQUAL constructs through the different media users in help desk service. In previous research, only two end-users' constructs were used: assurance and responsiveness. In this paper, we extend MEDIQUAL constructs to include reliability, empathy, assurance, tangibles, and responsiveness, which are based on the SERVQUAL theory. The results suggest that: 1) five MEDIQUAL constructs are validated through the factor analysis. That is, importance of the constructs have relatively high correlations between measures of the same construct using different methods and low correlations between measures of the constructs that are expected to differ; and 2) five MEDIQUAL constructs are statistically significant on media users' satisfaction in help desk service by regression analysis.

  9. Assessing the sustainable construction of large construction companies in Malaysia

    Science.gov (United States)

    Adewale, Bamgbade Jibril; Mohammed, Kamaruddeen Ahmed; Nasrun, Mohd Nawi Mohd

    2016-08-01

    Considering the increasing concerns for the consideration of sustainability issues in construction project delivery within the construction industry, this paper assesses the extent of sustainable construction among Malaysian large contractors, in order to ascertain the level of the industry's impacts on both the environment and the society. Sustainable construction explains the construction industry's responsibility to efficiently utilise the finite resources while also reducing construction impacts on both humans and the environment throughout the phases of construction. This study used proportionate stratified random sampling to conduct a field study with a sample of 172 contractors out of the 708 administered questionnaires. Data were collected from large contractors in the eleven states of peninsular Malaysia. Using the five-level rating scale (which include: 1= Very Low; 2= Low; 3= Moderate; 4= High; 5= Very High) to describe the level of sustainable construction of Malaysian contractors based on previous studies, statistical analysis reveals that environmental, social and economic sustainability of Malaysian large contractors are high.

  10. Causes of Construction Delays in Qatar Construction Projects

    OpenAIRE

    Murat Gunduz; Mohanad H. A. AbuHassan

    2016-01-01

    Construction industry mainly focuses on the superstructure, infrastructure, and oil and gas industry. The development of infrastructure projects in developing countries attracted a lot of foreign construction contractors, consultants, suppliers and diversified workforce to interfere and to be evolved in such huge investment. Reducing worksite delays in such projects require knowledge and attention. Therefore, it is important to identify the influencing delay attributes affecting construction ...

  11. Construction completion report

    International Nuclear Information System (INIS)

    1990-01-01

    This Construction Completion Report documents the major construction projects at the Waste Isolation Pilot Plant (WIPP) site and related information on contracts, schedules, and other areas which affected construction. This report is not intended to be an exhaustive detailed analysis of construction, but is a general overview and summary of the WIPP construction. 10 refs., 29 figs

  12. Sustainable construction: construction and demolition waste reconsidered.

    Science.gov (United States)

    del Río Merino, Mercedes; Izquierdo Gracia, Pilar; Weis Azevedo, Isabel Salto

    2010-02-01

    Construction activity in Europe has increased substantially in the past decade. Likewise, there has also been a commensurate rise in the generation of construction and demolition waste (C&DW). This, together with the fact that in many European countries the rate of recycling and reuse of C&DW is still quite low has engendered a serious environmental problem and a motivation to develop strategies and management plans to solve it. Due to its composition, there is a significant potential to reuse and/or recycle C&DW, and thereby, contribute to improving the sustainability of construction and development, but practical procedures are not yet widely known or practiced in the construction industry. This article (a) summarizes the different applications that are presently practiced to optimize the recovery and/or application of C&DW for reuse, and (b) proposes various measures and strategies to improve the processing of this waste. The authors suggest that to enhance environmental effectiveness, a conscious and comprehensive C&DW management plan should be implemented in each jurisdiction. More precisely, this study presents a holistic approach towards C&DW management, through which environmental benefits can be achieved through the application of new construction methods that can contribute to sustainable growth.

  13. Barriers of lean construction implementation in the Moroccan construction industry

    Science.gov (United States)

    Bajjou, Mohamed Saad; Chafi, Anas

    2018-04-01

    Improving the production system performance has become a fundamental pillar that must be taken into consideration in the construction industry. Recent developments in the construction sector have led to renewed interest in new techniques of management. Lean Construction is a very effective approach that has gained a high popularity by its ability to eliminate waste and maximize the value for the customer. Although both developed and developing countries have gained large benefits by implementing Lean Construction approach, several experiences showed many barriers that are hindering its implementation especially in developing countries. This paper aims to assess the critical barriers to the successful implementation in the Moroccan construction industry. Based on a literature review, followed by an analysis of data collected from a questionnaire survey which targeted 330 practitioners in the Moroccan construction field, several barriers were identified as key barriers. The findings of this investigation revealed that there are significant barriers such as Lack of knowledge about Lean Construction concepts, Unskilled Human Resources, and insufficient financial resources.

  14. Prefabrication in Building Construction: A Perspective of Pakistan Construction Industry

    Directory of Open Access Journals (Sweden)

    Nafees Ahmed Memon

    2014-07-01

    Full Text Available Construction industry is facing many problems in terms of construction waste, quality, environment, durability, safety and higher construction cost. Adoption of prefabrication is a possible solution to such problems. Accordingly, there is a need to study the prospects that would stimulate the appropriate discussion of the suitability of prefabrication and other construction methods for concrete buildings. Therefore, this study investigates the significance of advantages in adopting prefabrication along with hindrances through questionnaire survey. The data has been analyzed using RIW (Relative Importance Weight method as a MCDM approach. The results depict that main advantages of prefabrication are ?Shorter construction time? and ?Less construction site waste?. The top hindrances in adopting prefabrication as identified in this study are: ?Higher initial construction cost? and ?Inflexible for design changes?. Based on the survey results and apparent progress in the adoption of prefabrication around the world, it is concluded that the use of prefabrication is likely to increase in developing countries like Pakistan

  15. Prefabrication in building construction: a perspective of pakistan construction industry

    International Nuclear Information System (INIS)

    Memon, N.A.; Memon, F.A.; Khehro, S.H.

    2014-01-01

    Construction industry is facing many problems in terms of construction waste, quality, environment, durability, safety and higher construction cost. Adoption of prefabrication is a possible solution to such problems. Accordingly, there is a need to study the prospects that would stimulate the appropriate discussion of the suitability of prefabrication and other construction methods for concrete buildings. Therefore, this study investigates the significance of advantages in adopting prefabrication along with hindrances through questionnaire survey. The data has been analyzed using RIW (Relative Importance Weight) method as a MCDM approach. The results depict that main advantages of prefabrication are Shorter construction time and Less construction site waste. The top hindrances in adopting prefabrication as identified in this study are: Higher initial construction cost and Inflexible for design changes. Based on the survey results and apparent progress in the adoption of prefabrication around the world, it is concluded that the use of prefabrication is likely to increase in developing countries like Pakistan. (author)

  16. Case inflection of construct state constructions in Dinka

    DEFF Research Database (Denmark)

    Andersen, Torben

    2016-01-01

    Dinka, a Nilo-Saharan language, is largely monosyllabic, but nevertheless it has a fairly rich morphology. Thus, most of its morphology is expressed by alternations in phonological material of the root. The inflectional categories of nouns manifested in this way include state and case in addition...... to number. The state category consists of an absolute state and two construct states. The case category includes a nominative, a genitive, an allative, and an essive/ablative. The present article shows how case inflection is manifested in complex noun phrases consisting of a noun in a construct state...... simultaneously carry state information and case information. Thus, the case inflection of construct state constructions in Dinka adds yet another layer of nonlinear morphology to nouns in this language....

  17. Usability Constructs

    DEFF Research Database (Denmark)

    Hertzum, Morten; Clemmesen, Torkil; Hornbæk, Kasper Anders Søren

    2007-01-01

    Whereas research on usability predominantly employs universal definitions of the aspects that comprise usability, people experience their use of information systems through personal constructs. Based on 48 repertory-grid interviews, this study investigates how such personal constructs are affected...... use of constructs traditionally associated with usability (e.g., easy-to-use, intuitive, and liked). Further analysis of the data is ongoing...

  18. Leadership Quality for Malaysia Construction Leader to Steer a Success Construction Project

    Directory of Open Access Journals (Sweden)

    Ngah Nasaruddin Nur Ain

    2016-01-01

    Full Text Available Issues that dominate the construction industry for the long time such as time overrun, cost overrun, quality of construction and also safety during the construction process are difficult to resolve because of several factors involved which amongst them are leadership quality in the industry. Solving these issues can make the industry more sustainable in nature. This paper presents the need of leadership quality among construction parties involved to steer a construction project successfully. Literature work found that 11 leadership qualities to ensure construction project success. From the frequency analysis, five most dominant leadership qualities are team building, communication skill, visioning, planning & strategy skill, and decision making. Beside the literature, this study also seeks an opinion from a senior leader of a successful construction company regarding the need of these qualities amongst parties to resolve the construction issues. The results from an interview session indicate that he fully agreed with the need of all the qualities in the construction industry. This shows that there is a strong relationship between solving the issues with the leadership quality in ensuring construction project success. These qualities should be further investigated to acquire a better representation of leadership quality in resolving construction issues for Malaysia construction industry.

  19. Towards green construction

    International Nuclear Information System (INIS)

    Bajracharya, Bijaya B.; Shrestha, Prasanna M.

    2000-01-01

    Sustainability is the key to any development works. In the operation phase, hydro power is the most sustainable form of energy. However construction activities for the same power station are usually far from being green. The popular myth is that construction activity converts green into grey. Despite this popular myth, construction of a hydro power project in Nepal has made the project area greener than earlier during the construction phase itself. Choice of construction technology, appropriate level of environmental impact assessment, monitoring of environmental parameters along side the construction progress followed by mitigation at the right time; launching community development programmes side by side, having environmental specification in contractual documents and self-reliance to fulfill environmental obligations by contractors itself are the key factors in the environmental management within the construction activities. The main conclusions in the paper is the need to change the way to think about the project constraints

  20. ConStruct: Improved construction of RNA consensus structures

    Directory of Open Access Journals (Sweden)

    Steger Gerhard

    2008-04-01

    Full Text Available Abstract Background Aligning homologous non-coding RNAs (ncRNAs correctly in terms of sequence and structure is an unresolved problem, due to both mathematical complexity and imperfect scoring functions. High quality alignments, however, are a prerequisite for most consensus structure prediction approaches, homology searches, and tools for phylogeny inference. Automatically created ncRNA alignments often need manual corrections, yet this manual refinement is tedious and error-prone. Results We present an extended version of CONSTRUCT, a semi-automatic, graphical tool suitable for creating RNA alignments correct in terms of both consensus sequence and consensus structure. To this purpose CONSTRUCT combines sequence alignment, thermodynamic data and various measures of covariation. One important feature is that the user is guided during the alignment correction step by a consensus dotplot, which displays all thermodynamically optimal base pairs and the corresponding covariation. Once the initial alignment is corrected, optimal and suboptimal secondary structures as well as tertiary interaction can be predicted. We demonstrate CONSTRUCT's ability to guide the user in correcting an initial alignment, and show an example for optimal secondary consensus structure prediction on very hard to align SECIS elements. Moreover we use CONSTRUCT to predict tertiary interactions from sequences of the internal ribosome entry site of CrP-like viruses. In addition we show that alignments specifically designed for benchmarking can be easily be optimized using CONSTRUCT, although they share very little sequence identity. Conclusion CONSTRUCT's graphical interface allows for an easy alignment correction based on and guided by predicted and known structural constraints. It combines several algorithms for prediction of secondary consensus structure and even tertiary interactions. The CONSTRUCT package can be downloaded from the URL listed in the Availability and

  1. Construction and operation costs of constructed wetlands treating wastewater.

    Science.gov (United States)

    Gkika, Dimitra; Gikas, Georgios D; Tsihrintzis, Vassilios A

    2014-01-01

    Design data from nine constructed wetlands (CW) facilities of various capacities (population equivalent (PE)) are used to estimate construction and operation costs, and then to derive empirical equations relating the required facility land area and the construction cost to PE. In addition, comparisons between the costs of CW facilities based on various alternative construction materials, i.e., reinforced concrete and earth structures (covered with either high density polyethylene or clay), are presented in relation to the required area. The results show that earth structures are economically advantageous. The derived equations can be used for providing a preliminary cost estimate of CW facilities for domestic wastewater treatment.

  2. Perspectives of construction robots

    Science.gov (United States)

    Stepanov, M. A.; Gridchin, A. M.

    2018-03-01

    This article is an overview of construction robots features, based on formulating the list of requirements for different types of construction robots in relation to different types of construction works.. It describes a variety of construction works and ways to construct new or to adapt existing robot designs for a construction process. Also, it shows the prospects of AI-controlled machines, implementation of automated control systems and networks on construction sites. In the end, different ways to develop and improve, including ecological aspect, the construction process through the wide robotization, creating of data communication networks and, in perspective, establishing of fully AI-controlled construction complex are formulated.

  3. Shortening of construction period of nuclear power plant. Activities of construction industry on construction period shortening

    International Nuclear Information System (INIS)

    Kamata, Hirofumi

    2011-01-01

    Total construction period could be shorten by prefabricating structures efficiently in another yard and reducing working hours on site, which would reduce work at height or congestion work and also upgrade safety at work. Construction period shortening would surely reduce expenses during work and advance operation start of electric utilities. Construction of reactor building, turbine building, water intake and drainage canal was performed on a relatively large scale and a big share of whole schedule. This article summarized basic technologies to shorten construction period for reactor building/turbine building and water intake and drainage canal. Advanced methods of reactor building/turbine building; (1) modularization of equipment and skeleton, (2) utilization of concrete mold, reinforcing bar and steel frame, (3) precedent steel frame method and (4) steel plate reinforced concrete (SC) method, were outlined and their application examples were shown to reduce work on site and improve work efficiency. As for water intake and drainage canal construction, (1) precast concrete method, (2) SC method and (3) steel plate shell method were described with application examples. Construction procedures and problems using mega block method for water intake and drainage canal were also introduced. (T. Tanaka)

  4. Constructed Wetlands

    Science.gov (United States)

    these systems can improve water quality, engineers and scientists construct systems that replicate the functions of natural wetlands. Constructed wetlands are treatment systems that use natural processes

  5. Latent ruthenium–indenylidene catalysts bearing a N-heterocyclic carbene and a bidentate picolinate ligand

    Directory of Open Access Journals (Sweden)

    Thibault E. Schmid

    2015-09-01

    Full Text Available A silver-free methodology was developed for the synthesis of unprecedented N-heterocyclic carbene ruthenium indenylidene complexes bearing a bidentate picolinate ligand. The highly stable (SIPr(picolinateRuCl(indenylidene complex 4a (SIPr = 1,3-bis(2-6-diisopropylphenylimidazolidin-2-ylidene demonstrated excellent latent behaviour in ring closing metathesis (RCM reaction and could be activated in the presence of a Brønsted acid. The versatility of the catalyst 4a was subsequently demonstrated in RCM, cross-metathesis (CM and enyne metathesis reactions.

  6. Potential and Benefits of Building Information Modeling (BIM) During Pre-Construction, Construction and Post Construction Stage

    OpenAIRE

    Aw Nien Wei; Md Azree Othuman Mydin

    2017-01-01

    The construction industry is the main economic support for all countries around the world in which continually adapting to meet competitive challenges around the global market. Nevertheless, the construction project is becoming much more complex and difficult to manage. This is because the construction project involves a large number of stakeholder, for example, the consultant companies, architects, engineers, building surveyors and quantity surveyors. The technology current...

  7. FFTF constructibility

    International Nuclear Information System (INIS)

    Weber, S.A.; Hulbert, D.I.

    1975-01-01

    The influence of the design criteria on the constructibility of the Fast Flux Test Facility is described. Specifically, the effects of requirements due to maintenance accessibility, inerting of cells, seismicity, codes, and standards are addressed. The design and construction techniques developed to minimize the impact of the design criteria on cost and schedule are presented with particular emphasis on the cleanliness and humidity controls imposed during construction of the sodium systems. (U.S.)

  8. Leadership Quality for Malaysia Construction Leader to Steer a Success Construction Project

    OpenAIRE

    Ngah Nasaruddin Nur Ain; Abdul Rahman Ismail

    2016-01-01

    Issues that dominate the construction industry for the long time such as time overrun, cost overrun, quality of construction and also safety during the construction process are difficult to resolve because of several factors involved which amongst them are leadership quality in the industry. Solving these issues can make the industry more sustainable in nature. This paper presents the need of leadership quality among construction parties involved to steer a construction project successfully. ...

  9. Heterotic string construction

    International Nuclear Information System (INIS)

    Schellekens, A.N.

    1989-01-01

    In this paper an elementary introduction to the principles of four-dimensional string construction will be given. Although the emphasis is on lattice constructions, almost all results have further, and often quite straightforward generalizations to other constructions. Since heterotic strings look phenomenologically more promising than type-II theories the authors only consider the former, although everything can easily be generalized to type-II theories. Some additional aspects of lattice constructions are discussed, and an extensive review can be found

  10. 77 FR 49722 - Cranes and Derricks in Construction: Demolition and Underground Construction

    Science.gov (United States)

    2012-08-17

    ... underground construction work. Therefore, when OSHA promulgates a new final rule, states and territories with... used in construction work. For most construction work, the final rule replaced a prior cranes and... construction work. Through this direct final rule, OSHA is applying the updated requirements to that work. With...

  11. HITACHI construction CAE system

    International Nuclear Information System (INIS)

    Yoshida, M.

    1994-01-01

    Construction and maintenance of nuclear power plants have important problems such as shortening the construction period and reducing the construction cost. Recently, the problem of insufficient construction labor has arisen, and as drastic strategic development has become a necessary counter-measure. The following four principles are included in the measures to be taken for efficient execution of the construction work within the short construction period: (1) reduction of on-site work and expansion of module block making, (2)improvement of the accuracy of the on-site work process, adjustment and expansion of the work in parallel with the construction process, (3)improvement of efficiency of the on-site work and mechanization and automation of the work, (4)improvement of the accuracy of the management of the construction. A three dimensional simulation system plant construction plan CAE, comprising five modules has been developed. A project management system was also developed to improve the accuracy and efficiency of management work in the field

  12. 77 FR 49741 - Cranes and Derricks in Construction: Demolition and Underground Construction

    Science.gov (United States)

    2012-08-17

    ..., subpart CC, to replace the earlier rule (Sec. 1926.550) for all construction work.\\1\\ In proposing the new... derricks used in construction work. For most construction work, the final rule replaced a prior cranes and... construction work. Through this proposed rule, OSHA is proposing to apply the updated requirements to that work...

  13. How Can Lean Construction Improve the Daily Schedule of A Construction Manager?

    Science.gov (United States)

    Binninger, Marco; Dlouhy, Janosch; Schneider, Johannes; Haghsheno, Shervin

    2017-10-01

    The outcome of construction projects highly depends on effective management. The site manager is responsible for the site, and has a key role in executing construction projects. Especially this position has a wide range of tasks and a high volume of workload, which has to be carried out in a high pressure and high stress environment. Chaotic construction processes often create these working conditions. Lean Construction can help to organize the construction site in a better way and automatically supports the site manager.

  14. COUNTERBALANCING BENEFITS AND DRAWBACKS OF CONTEMPORARY STABLISED EARTH CONSTRUCTION BY CONSTRUCTION PROFESSIONALS

    Directory of Open Access Journals (Sweden)

    Mohammad Sharif Zami

    2011-07-01

    Full Text Available It is debatable among the construction professionals whether contemporary stabilised earth construction is beneficial in urban low cost housing. Existing literature recorded a lot of benefits and drawbacks from construction professionals, which is empirically substantiated. But there are drawbacks found in the literature that seemingly are conflicting, and construction professionals are divided in their opinion. This paper seeks to address these conflicts and division by validating the controversial drawbacks of contemporary stabilised earth construction in urban low cost housing.

  15. Managing Pre-Construction and Construction Risks on Project Sites in Abuja-Nigeria

    Directory of Open Access Journals (Sweden)

    Jimoh R.A.

    2016-03-01

    Full Text Available Managing risks in construction projects has been acknowledged as a key direction process for the purposes of attaining the project goal in terms of time, cost, quality, safety, and environmental sustainability. Hence, the paper evaluated pre-construction and construction risks on active project sites in Abuja-Nigeria. This was achieved using survey method through the self-administration of 35 questionnaires to the professionals handling the 35 identified projects being undertaking at that time. Results showed that errors and omissions in design and improperly defined project scope had mean score values of 3.03 and 2.54, respectively, were the construction risks most experienced by the professionals during pre-construction. On the other hand, fluctuation in market prices and delays with mean score values of 3.14 and 2.74, respectively, were the construction risks experienced by the professionals during the construction phase of the projects. It is recommended that procurement methods such as construction management should be adopted and stakeholders should keep to their own side of the bargain to avoid unnecessary delays.

  16. Construction fraud

    NARCIS (Netherlands)

    Graafland, J.J.; Liedekerke, L.; Dubbink, W.; van Liedekerke, L.; van Luijk, H.

    2011-01-01

    Due to the actions of a whistleblower The Netherlands was confronted with a massive case of construction fraud involving almost the entire construction sector. Price fixing, prior consulting, duplicate accounts, fictitious invoices and active corruption of civil servants were rampant practices. This

  17. How engineering facilitates construction

    International Nuclear Information System (INIS)

    Bailey, D.T.

    1976-01-01

    During a recent survey, construction personnel at jobsites were asked, ''what are the ten most unwanted construction problems.'' One reoccurring answer was design/construction incompatibility. In fact, many designs were impractical from a construction point of view. The reasons for this problem can be identified: Once construction begins, engineering is under intense pressure to issue new drawings to allow work to progress according to schedule. Other reasons may be the relative inexperience of the design personnel in construction, changes in design criteria and delays in receipt of supplier or client information. A description is presented of ways to solve this problem by obtaining construction expertise and input into the various phases and products of the engineering work

  18. Application and Mechanics Analysis of Multi-Function Construction Platforms in Prefabricated-Concrete Construction

    Science.gov (United States)

    Wang, Meihua; Li, Rongshuai; Zhang, Wenze

    2017-11-01

    Multi-function construction platforms (MCPs) as an “old construction technology, new application” of the building facade construction equipment, its efforts to reduce labour intensity, improve labour productivity, ensure construction safety, shorten the duration of construction and other aspects of the effect are significant. In this study, the functional analysis of the multi-function construction platforms is carried out in the construction of the assembly building. Based on the general finite element software ANSYS, the static calculation and dynamic characteristics analysis of the MCPs structure are analysed, the simplified finite element model is constructed, and the selection of the unit, the processing and solution of boundary are under discussion and research. The maximum deformation value, the maximum stress value and the structural dynamic characteristic model are obtained. The dangerous parts of the platform structure are analysed, too. Multiple types of MCPs under engineering construction conditions are calculated, so as to put forward the rationalization suggestions for engineering application of the MCPs.

  19. PWR plant construction in Japan

    International Nuclear Information System (INIS)

    Tamura, Toshifumi

    2002-01-01

    The construction methods based on the experiences on the Nuclear Island, which is a critical path in the total construction schedule, have been studied and reconsidered in order to construct by more reliable and economical method. So various improved construction method are being applied and the duration of construction is being reduced continuously. So various improved construction method are being applied and the duration of construction is being reduced continuously. In this paper, the history of construction of twenty-three (23) PWR Plant, the actual construction methods and schedule of Ohi-3/4, to which the many improved methods were applied during their construction, are introduced mainly with the improved points for previously constructed plants. And also the situation of construction method for the next PWR Plant is simply explained

  20. Visualization of construction engineering

    International Nuclear Information System (INIS)

    Okada, Hisako; Miura, Jun

    2000-01-01

    It is required for nuclear power plant construction to reduce construction cost and shorten construction period. An early and accurate construction planning including schedule coordination among the companies has recently become more important and it is possible to obtain necessary information for construction planning in early stage. In this situation, we have been developing a visualization system for construction engineering for nuclear power plants. This system has an interface with the existing Plant Layout 3D-CAD system and consists of three sub systems: (1) Scheduling and simulation system, (2) Yard planning system and (3) Scaffolding planning system. This paper describes overview of this system. This visualization system is very helpful for construction engineers to easily understand situation and environment around installation area, to easily plan a work sequence and confirm the planned schedule, and it is also effective for customers and workers to understand the planning. As a result, this visualization system enables safety and high quality construction. (author)

  1. TPX tokamak construction management

    International Nuclear Information System (INIS)

    Knutson, D.; Kungl, D.; Seidel, P.; Halfast, C.

    1995-01-01

    A construction management contract normally involves the acquisition of a construction management firm to assist in the design, planning, budget conformance, and coordination of the construction effort. In addition the construction management firm acts as an agent in the awarding of lower tier contracts. The TPX Tokamak Construction Management (TCM) approach differs in that the construction management firm is also directly responsible for the assembly and installation of the tokamak including the design and fabrication of all tooling required for assembly. The Systems Integration Support (SIS) contractor is responsible for the architect-engineering design of ancillary systems, such as heating and cooling, buildings, modifications and site improvements, and a variety of electrical requirements, including switchyards and >4kV power distribution. The TCM will be responsible for the procurement of materials and the installation of the ancillary systems, which can either be performed directly by the TCM or subcontracted to a lower tier subcontractor. Assurance that the TPX tokamak is properly assembled and ready for operation when turned over to the operations team is the primary focus of the construction management effort. To accomplish this a disciplined constructability program will be instituted. The constructability effort will involve the effective and timely integration of construction expertise into the planning, component design, and field operations. Although individual component design groups will provide liaison during the machine assembly operations, the construction management team is responsible for assembly

  2. Construction Management.

    Science.gov (United States)

    Abbott, James F.

    This article provides a detailed discussion of a team approach to building that involves a construction manager, an architect, and a contractor. Bidding methods are outlined; the major components in construction management -- value engineering and fast track scheduling -- and the use of performance specifications are discussed. The construction…

  3. Tank Operations Contract Construction Management Methodology. Utilizing The Agency Method Of Construction Management To Safely And Effectively Complete Nuclear Construction Work

    International Nuclear Information System (INIS)

    Leso, K.F.; Hamilton, H.M.; Farner, M.; Heath, T.

    2010-01-01

    Washington River Protection Solutions, LLC (WRPS) has faced significant project management challenges in managing Davis-Bacon construction work that meets contractually required small business goals. The unique challenge is to provide contracting opportunities to multiple small business construction subcontractors while performing high hazard work in a safe and productive manner. Previous to the Washington River Protection Solutions, LLC contract, Construction work at the Hanford Tank Farms was contracted to large companies, while current Department of Energy (DOE) Contracts typically emphasize small business awards. As an integral part of Nuclear Project Management at Hanford Tank Farms, construction involves removal of old equipment and structures and installation of new infrastructure to support waste retrieval and waste feed delivery to the Waste Treatment Plant. Utilizing the optimum construction approach ensures that the contractors responsible for this work are successful in meeting safety, quality, cost and schedule objectives while working in a very hazardous environment. This paper describes the successful transition from a traditional project delivery method that utilized a large business general contractor and subcontractors to a new project construction management model that is more oriented to small businesses. Construction has selected the Agency Construction Management Method. This method was implemented in the first quarter of Fiscal Year (FY) 2009, where Construction Management is performed by substantially home office resources from the URS Northwest Office in Richland, Washington. The Agency Method has allowed WRPS to provide proven Construction Managers and Field Leads to mentor and direct small business contractors, thus providing expertise and assurance of a successful project. Construction execution contracts are subcontracted directly by WRPS to small or disadvantaged contractors that are mentored and supported by DRS personnel. Each small

  4. TANK OPERATIONS CONTRACT CONSTRUCTION MANAGEMENT METHODOLOGY UTILIZING THE AGENCY METHOD OF CONSTRUCTION MANAGEMENT TO SAFELY AND EFFECTIVELY COMPLETE NUCLEAR CONSTRUCTION WORK

    Energy Technology Data Exchange (ETDEWEB)

    LESO KF; HAMILTON HM; FARNER M; HEATH T

    2010-01-14

    Washington River Protection Solutions, LLC (WRPS) has faced significant project management challenges in managing Davis-Bacon construction work that meets contractually required small business goals. The unique challenge is to provide contracting opportunities to multiple small business construction subcontractors while performing high hazard work in a safe and productive manner. Previous to the Washington River Protection Solutions, LLC contract, Construction work at the Hanford Tank Farms was contracted to large companies, while current Department of Energy (DOE) Contracts typically emphasize small business awards. As an integral part of Nuclear Project Management at Hanford Tank Farms, construction involves removal of old equipment and structures and installation of new infrastructure to support waste retrieval and waste feed delivery to the Waste Treatment Plant. Utilizing the optimum construction approach ensures that the contractors responsible for this work are successful in meeting safety, quality, cost and schedule objectives while working in a very hazardous environment. This paper describes the successful transition from a traditional project delivery method that utilized a large business general contractor and subcontractors to a new project construction management model that is more oriented to small businesses. Construction has selected the Agency Construction Management Method. This method was implemented in the first quarter of Fiscal Year (FY) 2009, where Construction Management is performed by substantially home office resources from the URS Northwest Office in Richland, Washington. The Agency Method has allowed WRPS to provide proven Construction Managers and Field Leads to mentor and direct small business contractors, thus providing expertise and assurance of a successful project. Construction execution contracts are subcontracted directly by WRPS to small or disadvantaged contractors that are mentored and supported by DRS personnel. Each small

  5. Sustainable construction : towards a strategic approach to construction material management for waste reduction

    OpenAIRE

    Abarca Guerrero, L.; Scheublin, F.J.M.; Egmond - de Wilde De Ligny, van, E.L.C.; Lambert, A.J.D.

    2008-01-01

    The construction sector plays a key role in shaping and developing the built environment. It also has an undisputed and significant impact on it due to the amounts of materials extracted and produced as waste. The construction industry has emphasized to recycling construction waste (CW), however, relatively less emphasis has been paid on construction waste minimization. CW reduction can be achieved through changes in design concepts, material and construction methods selection and material ma...

  6. Beyond Design: The Importance of Construction and Post-Construction Phases in Green Developments

    Directory of Open Access Journals (Sweden)

    Mark Hostetler

    2010-04-01

    Full Text Available Green developments are becoming a popular land use planning concept that attempts to accommodate growth while minimizing impacts on natural resources. Various policies encourage conservation designs that usually translate into the clustering of homes and the conservation of some percentage of open space. However, the success of a design is determined by what happens during the construction and post-construction phases of a subdivision project. These two phases are often ignored in land use planning and given only minimal attention by built environment professionals. As a result, green developments may not be functioning as originally intended. This essay discusses the importance of construction and post-construction and a way forward to create functional, sustainable communities. Construction activities and decisions, such as impacts from earthwork machines, improper protection of conserved open spaces and trees, the choice of plants used for yards and common areas, and the storage of construction material all can lead to severe impacts on natural areas both within and surrounding a development site. During post-construction, a variety of improper management practices by homeowners can compromise the sustainability of a development. Developers and associated environmental consultant teams could implement approaches that would engage contractors and residents, such as environmental construction covenants and the installment of a neighborhood, environmental education program. To increase the adoption of relevant construction and post-construction practices, appropriate policies need to be created. However, the shift will only occur once the planning and built environment community acknowledges that design is only the first step towards sustainability. Academic design studios and continuing education courses can help with this culture shift by including construction and post-construction considerations within their curriculum.

  7. Construction time of PWRs

    International Nuclear Information System (INIS)

    Moreira, João M.L.; Gallinaro, Bruno; Carajilescov, Pedro

    2013-01-01

    The construction time of PWRs is studied considering published data about nuclear power plants in the world. For the 268 PWRs in operation in 2010, the mode of the construction time distribution is around 5–6 years, and 80% of the plants were built in less than 120 months. To circumvent the problem of comparing plants with different size we normalized the construction time to plants with 1 GW. We restricted the analysis to 201 PWRs which suffered less from external factors that were beyond the control of the management from 1965 to 2010. The results showed that the normalized construction time did not increase over the years and nor with the plants’ gross power level. The learning rate of the industry regarding normalized construction times showed a reduction with 95% confidence level of about 0.56±0.07 months for each 10 GW of installed capacity. Over the years the normalized construction time decreased and became more predictable. The data showed that countries with more centralized regulatory, construction and operation environments were able to build PWRs in shorter times. Countries less experienced with the nuclear technology built PWRs in longer times. - Highlights: ► The construction time of PWRs is analyzed based on historical data. ► Different factors affecting construction time are considered in the analyses. ► The normalized construction time of PWRs decreased with time and gross power level. ► Countries with more centralized institutions built PWRs more quickly

  8. Report of the subpanel on long-range planning for the US High-Energy-Physics Program of the High-Energy-Physics Advisory Panel

    International Nuclear Information System (INIS)

    1982-01-01

    The US High Energy Program remains strong, but it faces vigorous competition from other regions of the world. To maintain its vitality and preeminence over the next decade it requires the following major ingredients: (1) strong exploitation of existing facilities; (2) the expeditious completion of construction projects which will expand these facilities over the next few years; (3) the construction of a substantial new facility to be ready for research by the end of the 1980's; and (4) the vigorous pursuit of a wide range of advanced accelerator R and D programs in preparation for the design and construction of a higher energy accelerator which would probably be initiated near the end of this decade. The Subpanel has considered how best to accomplish these goals under two different budgetary assumptions; namely, average yearly support levels of $440M DOE, $35M NSF, and $395M DOE, $34M NSF (FY 1982 dollars). It has also considered the impact of a yet lower support level of $360M DOE and $32M NSF. A description of facilities in high energy physics is given, and facility recommendations and long range plans are discussed. Recommendations for international collaboration are included

  9. Superstring construction

    CERN Document Server

    1989-01-01

    The book includes a selection of papers on the construction of superstring theories, mainly written during the years 1984-1987. It covers ten-dimensional supersymmetric and non-supersymmetric strings, four-dimensional heterotic strings and four-dimensional type-II strings. An introduction to more recent developments in conformal field theory in relation to string construction is provided.

  10. Concrete construction engineering handbook

    CERN Document Server

    Nawy, Edward G

    2008-01-01

    Provides coverage of concrete construction engineering and technology. This work features discussions focusing on: the advances in engineered concrete materials; reinforced concrete construction; specialized construction techniques; and, design recommendations for high performance.

  11. Tank Operations Contract Construction Management Methodology. Utilizing The Agency Method Of Construction Management

    International Nuclear Information System (INIS)

    Lesko, K.F.; Berriochoa, M.V.

    2010-01-01

    Washington River Protection Solutions, LLC (WRPS) has faced significant project management challenges in managing Davis-Bacon construction work that meets contractually required small business goals. The unique challenge is to provide contracting opportunities to multiple small business constructioin subcontractors while performing high hazard work in a safe and productive manner. Previous to the WRPS contract, construction work at the Hanford Tank Farms was contracted to large companies, while current Department of Energy (DOE) Contracts typically emphasize small business awards. As an integral part of Nuclear Project Management at Hanford Tank Farms, construction involves removal of old equipment and structures and installation of new infrastructure to support waste retrieval and waste feed delivery to the Waste Treatment Plant. Utilizing the optimum construction approach ensures that the contractors responsible for this work are successful in meeting safety, quality, cost and schedule objectives while working in a very hazardous environment. This paper descirbes the successful transition from a traditional project delivery method that utilized a large business general contractor and subcontractors to a new project construction management model that is more oriented to small businesses. Construction has selected the Agency Construction Management Method (John E Schaufelberger, Len Holm, 'Management of Construction Projects, A Constructor's Perspective', University of Washington, Prentice Hall 2002). This method was implemented in the first quarter of Fiscal Year 2009 (FY2009), where Construction Management is performed by substantially home office resources from the URS Northwest Office in Richland, Washington. The Agency Method has allowed WRPS to provide proven Construction Managers and Field Leads to mentor and direct small business contractors, thus providing expertise and assurance of a successful project. Construction execution contracts are subcontracted

  12. TANK OPERATIONS CONTRACT CONSTRUCTION MANAGEMENT METHODOLOGY UTILIZING THE AGENCY METHOD OF CONSTRUCTION MANAGEMENT

    Energy Technology Data Exchange (ETDEWEB)

    LESKO KF; BERRIOCHOA MV

    2010-02-26

    Washington River Protection Solutions, LLC (WRPS) has faced significant project management challenges in managing Davis-Bacon construction work that meets contractually required small business goals. The unique challenge is to provide contracting opportunities to multiple small business constructioin subcontractors while performing high hazard work in a safe and productive manner. Previous to the WRPS contract, construction work at the Hanford Tank Farms was contracted to large companies, while current Department of Energy (DOE) Contracts typically emphasize small business awards. As an integral part of Nuclear Project Management at Hanford Tank Farms, construction involves removal of old equipment and structures and installation of new infrastructure to support waste retrieval and waste feed delivery to the Waste Treatment Plant. Utilizing the optimum construction approach ensures that the contractors responsible for this work are successful in meeting safety, quality, cost and schedule objectives while working in a very hazardous environment. This paper descirbes the successful transition from a traditional project delivery method that utilized a large business general contractor and subcontractors to a new project construction management model that is more oriented to small businesses. Construction has selected the Agency Construction Management Method (John E Schaufelberger, Len Holm, "Management of Construction Projects, A Constructor's Perspective", University of Washington, Prentice Hall 2002). This method was implemented in the first quarter of Fiscal Year 2009 (FY2009), where Construction Management is performed by substantially home office resources from the URS Northwest Office in Richland, Washington. The Agency Method has allowed WRPS to provide proven Construction Managers and Field Leads to mentor and direct small business contractors, thus providing expertise and assurance of a successful project. Construction execution contracts are

  13. Construction labor productivity during nuclear power plant construction

    International Nuclear Information System (INIS)

    Murray, W.B.

    1980-01-01

    This paper discusses the three different types of productivity programs used at the Wm. H. Zimmer Nuclear Power Station construction site. The Standard Cost Estimate as Productivity Measurement compares actual units installed to estimated units. The Manpower and Equipment Utilization Study measures the present utilization level of the construction work force, identifies opportunities for productivity improvement, and establishes a data base against which future improvements could be made. The special productivity program is a specialized and detailed study of first line supervision. Productivity is defined as the degree of efficiency attained in the use of labor, professional and management skills and knowledge, materials and equipment, and time and money to produce an end result. It is concluded that a more consistent system of productivity measurements needs to be developed and promoted for general use in the construction industry

  14. Assessing problem-solving skills in construction education with the virtual construction simulator

    Science.gov (United States)

    Castronovo, Fadi

    The ability to solve complex problems is an essential skill that a construction and project manager must possess when entering the architectural, engineering, and construction industry. Such ability requires a mixture of problem-solving skills, ranging from lower to higher order thinking skills, composed of cognitive and metacognitive processes. These skills include the ability to develop and evaluate construction plans and manage the execution of such plans. However, in a typical construction program, introducing students to such complex problems can be a challenge, and most commonly the learner is presented with only part of a complex problem. To support this challenge, the traditional methodology of delivering design, engineering, and construction instruction has been going through a technological revolution, due to the rise of computer-based technology. For example, in construction classrooms, and other disciplines, simulations and educational games are being utilized to support the development of problem-solving skills. Previous engineering education research has illustrated the high potential that simulations and educational games have in engaging in lower and higher order thinking skills. Such research illustrated their capacity to support the development of problem-solving skills. This research presents evidence supporting the theory that educational simulation games can help with the learning and retention of transferable problem-solving skills, which are necessary to solve complex construction problems. The educational simulation game employed in this study is the Virtual Construction Simulator (VCS). The VCS is a game developed to provide students in an engaging learning activity that simulates the planning and managing phases of a construction project. Assessment of the third iteration of the VCS(3) game has shown pedagogical value in promoting students' motivation and a basic understanding of construction concepts. To further evaluate the benefits on

  15. Applying lean thinking in construction

    Directory of Open Access Journals (Sweden)

    Remon Fayek Aziz

    2013-12-01

    Full Text Available The productivity of the construction industry worldwide has been declining over the past 40 years. One approach for improving the situation is using lean construction. Lean construction results from the application of a new form of production management to construction. Essential features of lean construction include a clear set of objectives for the delivery process, aimed at maximizing performance for the customer at the project level, concurrent design, construction, and the application of project control throughout the life cycle of the project from design to delivery. An increasing number of construction academics and professionals have been storming the ramparts of conventional construction management in an effort to deliver better value to owners while making real profits. As a result, lean-based tools have emerged and have been successfully applied to simple and complex construction projects. In general, lean construction projects are easier to manage, safer, completed sooner, and cost less and are of better quality. Significant research remains to complete the translation to construction of lean thinking in Egypt. This research will discuss principles, methods, and implementation phases of lean construction showing the waste in construction and how it could be minimized. The Last Planner System technique, which is an important application of the lean construction concepts and methodologies and is more prevalent, proved that it could enhance the construction management practices in various aspects. Also, it is intended to develop methodology for process evaluation and define areas for improvement based on lean approach principles.

  16. Modelling the factors influencing the selection of the construction equipment for Indian construction organizations

    Directory of Open Access Journals (Sweden)

    S.V.S. Raja Prasad

    2016-09-01

    Full Text Available The contribution of Indian construction sector to the GDP is approximately 10%. Under new government policy, it is anticipated that $1000 Billion share for exclusively infrastructure segment would be completed within the next few years. Construction sector in developing country like India still depends on labor and the practice of mechanization, adopting to use of versatile construction equipment is not in force. The need for implementing new technologies and automation is essential to improve the quality, safety and efficiency. To meet the challenges ahead the construction, organizations should focus on utilization of machinery/equipment to achieve desirable results. Modern construction is characterized by the increase in utilization of equipment to accomplish numerous construction activities. The selection of construction equipment often affects the required amount of time and effort. It is therefore important for managements of construction organizations and planners to be familiar with the features of various types of equipment commonly used in construction activities. The selection of appropriate equipment is a crucial decision making process as it involves huge capital investment. The purpose of the present study is to develop a model pertaining to the factors influencing the selection of construction equipment by using interpretive structural modelling and the results indicate that productivity and safety are the important factors in selection of equipment in Indian construction organizations.

  17. Economic assessment of the construction industry: A construction-economics nexus

    Science.gov (United States)

    Barber, Herbert Marion, Jr.

    The purpose of this study was to conduct an economic assessment of the construction industry. More specifically, this study addresses ambiguities within the literature that are associated with the construction-economics nexus. The researcher 1) investigated the relationships between economic indicators and stock prices of U.S. construction equipment manufacturers, 2) investigated the relationships between energy production, consumption, and corruption, and 3) determined the economic effect electricity generation and electricity consumption has on economies of scale. The researcher used descriptive and inferential statistics in this study and determined that economists, researchers, policy-makers, and others should have predicted the 2007-08 world economic collapse 5-6 years prior to realization of the event given that construction indices and GDP grossly regressed from statistically acceptable trends as early as 2002 and perhaps 2000. Substantiating this claim, the effect of the cost of construction materials and labor, i.e. construction index, on GDP was significant for years leading up to the collapse (1970-2007). Additionally, it was determined that energy production and consumption are predictors of governmental corruption in some countries. In the Republic of Botswana, for example, the researcher determined that energy production and consumption statistically jointly effected governmental corruption. In addition to determining statistical effect, a model for predicting governmental corruption was developed based on energy production and consumption volumes. Also, the researcher found that electricity generation in the 25 largest world economies had a statistically significant effect on GDP. Electricity consumption also had an effect on GDP, as well, but not on other economic indicators. More importantly than the quantitative findings, the researcher concluded that the construction-economics nexus is far more complex than most policy-makers realize. As such

  18. USAID Construction Assessment

    Data.gov (United States)

    US Agency for International Development — The USAID construction assessment is a survey of the character, scope, value and management of construction activities supported by USAID during the period from June...

  19. Construction mediation and its hybridization: the case of the Hong Kong construction industry

    Directory of Open Access Journals (Sweden)

    Ng Pui-Lam

    2017-01-01

    Full Text Available In view of the sophisticated nature of construction disputes, specialized dispute resolution mechanisms are of pivotal importance to the satisfactory settlement between disputing parties. Among the various construction dispute resolution mechanisms, mediation has been increasingly gaining recognition and acceptance. Its hybrid, namely mediation-arbitration (med-arb, has also emerged and has started receiving attention and appreciation. With special reference to the construction industry practice in Hong Kong, a commentary on the respective merits and demerits of construction mediation and construction med-arb, as well as the ways forward, are presented in this article.

  20. The Influence of Organizational External Factors on Construction Risk Management among Nigerian Construction Companies

    Directory of Open Access Journals (Sweden)

    A.Q. Adeleke

    2018-03-01

    Full Text Available Background: Substantial empirical research has shown conflicting results regarding the influence of organizational external factors on construction risk management, suggesting the necessity to introduce a moderator into the study. The present research confirmed whether rules and regulations matter on the relationships between organizational external factors and construction risk management. Methods: Based on discouragement and organizational control theory, this research examined the effects of organizational external factors and rules and regulations on construction risk management among 238 employees operating in construction companies in Abuja and Lagos, Nigeria. A personally administered questionnaire was used to acquire the data. The data were analyzed using partial least squares structural equation modeling. Results: A significant positive relationship between organizational external factors and construction risk management was asserted. This study also found a significant positive relationship between rules and regulations and construction risk management. As anticipated, rules and regulations were found to moderate the relationship between organizational external factors and construction risk management, with a significant positive result. Similarly, a significant interaction effect was also found between rules and regulations and organizational external factors. Implications of the research from a Nigerian point of view have also been discussed. Conclusion: Political, economy, and technology factors helped the construction companies to reduce the chance of risk occurrence during the construction activities. Rules and regulations also helped to lessen the rate of accidents involving construction workers as well as the duration of the projects. Similarly, the influence of the organizational external factors with rules and regulations on construction risk management has proven that most of the construction companies that implement the

  1. Advanced construction methods in ACR

    International Nuclear Information System (INIS)

    Elgohary, M.; Choy, E.; Yu, S.K.W.

    2002-01-01

    The ACR - Advanced CANDU Reactor, developed by Atomic Energy of Canada Limited (AECL), is designed with constructability considerations as a major requirement during all project phases from the concept design stage to the detail design stage. This necessitated a much more comprehensive approach in including constructability considerations in the design to ensure that the construction duration is met. For the ACR-700, a project schedule of 48 months has been developed for the nth replicated unit with a 36 month construction period duration from First Concrete to Fuel Load. An overall construction strategy that builds on the success of the construction methods that are proven in the construction of the Qinshan CANDU 6 project has been developed for the ACR. The overall construction strategy comprises the 'Open Top' construction technique using a Very Heavy Lift crane, parallel construction activities, with extensive modularization and prefabrication. In addition, significant applications of up to date construction technology will be implemented, e.g. large volume concrete pours, prefabricated rebar, use of climbing forms, composite structures, prefabricated permanent formwork, automatic welding, and utilization of the latest electronic technology tools such as 3D CADDs modelling yields a very high quality, clash free product to allow construction to be completed 'right the first time' and eliminates rework. Integration of 3D CADDs models and scheduling tools such as Primavera has allowed development of actual construction sequences and an iterative approach to schedule verification and improvement. Modularization and prefabrication are major features of the ACR design in order to achieve the project schedule. For the reactor building approximately 80% of the volume will be installed as modules or prefabricated assembles. This ensures critical path activities are achieved. This paper examines the advanced construction methods implemented in the design in order to

  2. Model Tests on the Retaining Walls Constructed from Geobags Filled with Construction Waste

    OpenAIRE

    Wen, Hua; Wu, Jiu-jiang; Zou, Jiao-li; Luo, Xin; Zhang, Min; Gu, Chengzhuang

    2016-01-01

    Geobag retaining wall using construction waste is a new flexible supporting structure, and the usage of construction waste to fill geobags can facilitate the construction recycling. In this paper, model tests were performed on geobag retaining wall using construction waste. The investigation was concentrated on the slope top settlement, the distribution characteristics of the earth pressures on retaining walls and horizontal wall displacements, and slope failure modes. The results indicated t...

  3. 23 CFR 660.113 - Construction.

    Science.gov (United States)

    2010-04-01

    ... 23 Highways 1 2010-04-01 2010-04-01 false Construction. 660.113 Section 660.113 Highways FEDERAL... (DIRECT FEDERAL) Forest Highways § 660.113 Construction. (a) No construction shall be undertaken on any FH... construction of FHs will be performed by the contract method, unless construction by the FHWA, the FS, or a...

  4. Constructability and maintainability

    International Nuclear Information System (INIS)

    Hart, R.S.

    1985-01-01

    A set of principles for minimizing the construction schedule was established at the outset of the CANDU 300 programme. Consideration of these principles and other factors led to the development of the unique CANDU 300 station layout. The paper discusses the CANDU 300 station layout and construction methods. In summary, the station layout provides 360 deg. construction access to all buildings, separation of nuclear and non-nuclear systems, precise and minimal physical interfaces between buildings, accommodation of many contractors and construction activities without interference, and maximum flexibility in terms of constructional, financial and supply arrangements. The CANDU 300 further employs modularization, shop fabrication and advanced instrumentation (multiplexers, remote processors, data highways) to minimize construction time. Many of the CANDU 300 features that enhance constructability also contribute to maintainability. These include the 360 deg. access to all principal buildings, the uncluttered and spacious building layouts, the simplification of systems and the high level of modularization. The CANDU 300 has also been designed to facilitate the replacement of all key components, thereby offering an essentially unlimited station life. A prime example is a reduction in the fuel channel inlet end-fitting diameter such that the fuel channels can be shop assembled and easily replaced after the initial 40 years of operation, without an extended unit outage. Maintainability within the reactor building has been given particular attention in the CANDU 300 design; key features of other CANDU reactors (the ability to replace a heat transport system pump motor at power, for example) have been incorporated, while accessibility and maintainability of all systems and components have been enhanced. These and other aspects of maintainability are discussed. (author)

  5. State of the art on construction automation and robotic system in domestic and foreign construction industry

    International Nuclear Information System (INIS)

    Lee, Sung Uk; Seo, Yong Chil; Jung, Seung Ho; Cho, Jai Wan; Choi, Young Soo

    2007-08-01

    In this report, we review the existing concept of construction automation and also survey the state of the art on construction automation and robotic system in domestic and foreign construction industry. On the basis of the result of review and survey, we want to suggest an applicable robotic technology to construction industry and points to be duly considered for activating construction automation. We investigate the state of the art on construction automation and robotic system in domestic and foreign construction industry and also applicable area and direction of domestic construction automation and robotic system. We hope that construction automation and robotic technology, which are improved rapidly nowadays, can contribute to the growth of construction industry

  6. Construction safety

    CERN Document Server

    Li, Rita Yi Man

    2013-01-01

    A close-to-ideal blend of suburb and city, speedy construction of towers of Babylon, the sparkling proportion of glass and steel buildings’ facade at night showcase the wisdom of humans. They also witness the footsteps, sweats and tears of architects and engineers. Unfortunately, these signatures of human civilizations are swathed in towering figures of construction accidents. Fretting about these on sites, different countries adopt different measures on sites. This book firstly sketches the construction accidents on sites, followed by a review on safety measures in some of the developing countries such as Bermuda, Egypt, Kuwait and China; as well as developed countries, for example, the United States, France and Singapore. It also highlights the enormous compensation costs with the courts’ experiences in the United Kingdom and Hong Kong.

  7. STIMULATION OF CONSTRUCTION OF AFFORDABLE HOUSING BY REFORMATION OF A CONSTRUCTION COMPLEX MANAGEMENT SYSTEM

    Directory of Open Access Journals (Sweden)

    BRONEVYTSKYI S. P.

    2015-10-01

    Full Text Available Purpose. Development of offers on stimulation of construction of affordable housing by reformation of a construction complex management system. Methodology. The revelation of the problems of planning of construction in large cities. The analysis of forming of structure of a build complex management in soviet times and in a transitional period. The revelation of the modern, actual, socio-economic problems of the construction activity management. Proposition on the improvement of methods of construction management in cities of Ukraine. Results. The methods of a construction complex management in countries with a market economy as for building of affordable housing are shown. Originality. In composition of a town-planning documentations, except for the norms of the common use of territories of city (density of population of micro region, the maximum parameters of a construction examining of land areas are proposed to determine: building percent and coefficient of maximum superficial area. Practical value. The principle of management and organization of construction is norms of a build use of territories for building of mass affordable housing for funds of population and investors while providing of the comfort of housing in accordance with state construction norms.

  8. Worldwide construction

    International Nuclear Information System (INIS)

    Williamson, M.

    1994-01-01

    The paper lists major construction projects in worldwide processing and pipelining, showing capacities, contractors, estimated costs, and time of construction. The lists are divided into refineries, petrochemical plants, sulfur recovery units, gas processing plants, pipelines, and related fuel facilities. This last classification includes cogeneration plants, coal liquefaction and gasification plants, biomass power plants, geothermal power plants, integrated coal gasification combined-cycle power plants, and a coal briquetting plant

  9. Constructive renormalization theory

    International Nuclear Information System (INIS)

    Rivasseau, Vincent

    2000-01-01

    These notes are the second part of a common course on Renormalization Theory given with Professor P. da Veiga. I emphasize here the rigorous non-perturbative or constructive aspects of the theory. The usual formalism for the renormalization group in field theory or statistical mechanics is reviewed, together with its limits. The constructive formalism is introduced step by step. Taylor forest formulas allow to perform easily the cluster and Mayer expansions which are needed for a single step of the renormalization group in the case of Bosonic theories. The iteration of this single step leads to further difficulties whose solution is briefly sketched. The second part of the course is devoted to Fermionic models. These models are easier to treat on the constructive level so they are very well suited to beginners in constructive theory. It is shown how the Taylor forest formulas allow to reorganize perturbation theory nicely in order to construct the Gross-Neveu 2 model without any need for cluster or Mayer expansions. Finally applications of this technique to condensed matter and renormalization group around Fermi surface are briefly reviewed. (author)

  10. Vinylogous Nicholas reactions in the synthesis of bi- and tricyclic cycloheptynedicobalt complexes.

    Science.gov (United States)

    Kolodziej, Izabela; Green, James R

    2015-11-28

    The Lewis acid mediated intramolecular Nicholas reactions of allylic acetate enyne-Co2(CO)6 complexes afford cycloheptenyne-Co2(CO)6 complexes in three manifestations. Electron rich aryl substituted alkyne complexes give tricyclic 6,7,x-benzocycloheptenyne complexes, with x = 5, 6, or 7. Allylsilane substituted complexes afford exo methylene bicyclic x,7-cycloheptenyne complexes (x = 6,7). The allyl acetate function may also be replaced by a benzylic acetate, to afford dibenzocycloheptyne-Co2(CO)6 complexes. Following reductive complexation, the methodology may be applied to the synthesis of the icetexane diterpene carbon framework.

  11. Why developmental niche construction is not selective niche construction: and why it matters.

    Science.gov (United States)

    Stotz, Karola

    2017-10-06

    In the last decade, niche construction has been heralded as the neglected process in evolution. But niche construction is just one way in which the organism's interaction with and construction of the environment can have potential evolutionary significance. The constructed environment does not just select for , it also produces new variation. Nearly 3 decades ago, and in parallel with Odling-Smee's article 'Niche-constructing phenotypes', West and King introduced the 'ontogenetic niche' to give the phenomena of exo genetic inheritance a formal name. Since then, a range of fields in the life sciences and medicine has amassed evidence that parents influence their offspring by means other than DNA (parental effects), and proposed mechanisms for how heritable variation can be environmentally induced and developmentally regulated. The concept of 'developmental niche construction' (DNC) elucidates how a diverse range of mechanisms contributes to the transgenerational transfer of developmental resources. My most central of claims is that whereas the selective niche of niche construction theory is primarily used to explain the active role of the organism in its selective environment, DNC is meant to indicate the active role of the organism in its developmental environment. The paper highlights the differences between the construction of the selective and the developmental niche, and explores the overall significance of DNC for evolutionary theory.

  12. SUBSURFACE CONSTRUCTION AND DEVELOPMENT ANALYSIS

    International Nuclear Information System (INIS)

    N.E. Kramer

    1998-01-01

    The purpose of this analysis is to identify appropriate construction methods and develop a feasible approach for construction and development of the repository subsurface facilities. The objective of this analysis is to support development of the subsurface repository layout for License Application (LA) design. The scope of the analysis for construction and development of the subsurface Repository facilities covers: (1) Excavation methods, including application of knowledge gained from construction of the Exploratory Studies Facility (ESF). (2) Muck removal from excavation headings to the surface. This task will examine ways of preventing interference with other subsurface construction activities. (3) The logistics and equipment for the construction and development rail haulage systems. (4) Impact of ground support installation on excavation and other construction activities. (5) Examination of how drift mapping will be accomplished. (6) Men and materials handling. (7) Installation and removal of construction utilities and ventilation systems. (8) Equipping and finishing of the emplacement drift mains and access ramps to fulfill waste emplacement operational needs. (9) Emplacement drift and access mains and ramps commissioning prior to handover for emplacement operations. (10) Examination of ways to structure the contracts for construction of the repository. (11) Discussion of different construction schemes and how to minimize the schedule risks implicit in those schemes. (12) Surface facilities needed for subsurface construction activities

  13. Construction program management

    CERN Document Server

    Delaney, Joseph

    2013-01-01

    Although construction is one of the largest industries in the United States, it lags behind other industries in its implementation of modern management techniques such as those contained in the Standard for Program Management (the Standard) by the Project Management Institute (PMI(R)). Construction Program Management details the successful use of the PMI(R) approach for the construction of capital programs. It demonstrates, through case studies, how implementation of PMI's set of tools and techniques can improve the chances of program success. Exploring tactical and strategic management method

  14. CONSTRUCTIVE EDUCATIONAL ENVIRONMENT SCHOOL-UNIVERSITY

    Directory of Open Access Journals (Sweden)

    Natalya Petrovna Shatalova

    2016-02-01

    Full Text Available The article presents the results of the study the key components of the development of constructive thinking of students on the basis of model building constructive educational environment school-University. It was conducted from a position of constructive approach in education, as a process of systemic-structural methodology of cognitive and creative activity of the student, promotes development and formation of various constructive qualities of the individual. The functions of constructive educational environment school-University aimed at developing constructive thinking of students, defined by its structural components and connections, shows the consistency of self-development of constructive thinking and job satisfaction the development of constructive skills. The findings reveal innovative possibilities of cooperation of schools and universities in the design and functioning model of constructive educatio-nal space that contributes to the development of constructive thinking of all its stakeholders.Purpose: measuring the effectiveness of the model constructive educational environment school-University aimed at the development of students.Methodology: the Programme of research included: (1 diagnosis of the development level of constructive thinking on the questionnaire developed in the context of the constructive theory of education, (2 augmented and revised by the author the diagnosis of satisfaction and importance model of constructive educational environment school-University by the method of G.A. Gagarin, as well as theoretical modeling, method of involved observation, formal teaching method.Results. The article introduces the concept of «constructive learning environments», which are considered in relation to the organization and conduct of joint activities of teachers, teachers and students. The authors give a theoretical comparative analysis of scientific works of colleagues in the context of the problem. Offer a brief

  15. 49 CFR 1101.3 - Construction.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 8 2010-10-01 2010-10-01 false Construction. 1101.3 Section 1101.3 Transportation Other Regulations Relating to Transportation (Continued) SURFACE TRANSPORTATION BOARD, DEPARTMENT OF TRANSPORTATION RULES OF PRACTICE DEFINITIONS AND CONSTRUCTION § 1101.3 Construction. The rules of construction...

  16. Radioactive materials in construction projects

    International Nuclear Information System (INIS)

    Herrmann, Ralf; Ohlendorf, Frank; Kaltz, Andrea Christine

    2014-01-01

    Till 1990 residues often of the former uranium mining were partly used as building material for road construction, terrain compensation and house construction in Saxony. These recommendations for action are addressed to applicants, planners and building constructors in the engineering and construction sector. It provides information for planning, preliminary investigations, applications, construction supervision related to radiation protection measures and documentation of construction projects where radioactive materials are expected.

  17. Human Resource Construction

    Institute of Scientific and Technical Information of China (English)

    2015-01-01

    Centering on strategic objective of reform and development,CIAE formulated its objectives in human resource construction for the 13th Five-year Plan period,and achieved new apparent progress in human resource construction in 2015.1 Implementation of"LONGMA Project"

  18. Personal Usability Constructs

    DEFF Research Database (Denmark)

    Hertzum, Morten; Clemmensen, Torkil; Hornbæk, Kasper

    2011-01-01

    Whereas the concept of usability is predominantly defined analytically, people relate to systems through personal usability constructs. Based on 48 repertory-grid interviews, this study investigates how such personal constructs are affected by two factors crucial to the international development...

  19. Sustainable construction : towards a strategic approach to construction material management for waste reduction

    NARCIS (Netherlands)

    Abarca Guerrero, L.; Scheublin, F.J.M.; Egmond - de Wilde De Ligny, van E.L.C.; Lambert, A.J.D.

    2008-01-01

    The construction sector plays a key role in shaping and developing the built environment. It also has an undisputed and significant impact on it due to the amounts of materials extracted and produced as waste. The construction industry has emphasized to recycling construction waste (CW), however,

  20. DECISION SUPPORT CONCEPT TO MANAGEMENT OF CONSTRUCTION PROJECTS - PROBLEM OF CONSTRUCTION SITE SELECTION

    Directory of Open Access Journals (Sweden)

    Nikša Jajac

    2013-02-01

    Full Text Available The aim of this paper is to present Decision Support Concept (DSC for management of construction projects. Focus of our research is in application of multicritera methods (MCM to decision making in planning phase of construction projects (related to the problem of construction sites selection. The problem is identified as a significant one from many different aspects such as economic aspect, civil engineering aspect, etc. what indicates the necessity for evaluation of multiple sites by several different criteria. Therefore, DSC for construction site selection based on PROMETHEE method is designed. In order to define the appropriate criteria, their weights and preference functions for the concept, three groups of stakeholders are involved (investors, construction experts and experts for real estate market in its design. AHP method has been used for determination of criteria weights. The model has been tested on the problem of site selection for construction of residential-commercial building in four largest cities in Croatia.

  1. Construction in Occupied Spaces

    Directory of Open Access Journals (Sweden)

    Ward Andrew E.

    2017-06-01

    Full Text Available Conducting construction activities in occupied environments presents a great challenge due to the additional logistical requirements and the presence of the building occupants. The aim of this research is to gather and evaluate the means and methods to successfully plan, manage, and execute construction activities in occupied spaces in an effort to provide consolidated industry tools and strategies for maintaining a schedule and minimizing the impact on the occupants. The methodology of the research utilizes an exploratory approach to gather qualitative data. The data was collected through interviews with industry professionals to identify industry best practices. The semi-structured interviews provided a platform for the documents, lessons learned, and the techniques and strategies used for occupied construction by the construction industry. The information obtained in the interview process identified six themes that are critical to achieving and maintaining quality in occupied construction. These themes of the schedule, cost, customer satisfaction, planning, fire/life safety and utilities, and contractor management are reviewed in detail, and the paper discusses how to manage each element. The analysis and extracted management techniques, procedures and strategies can be used by the construction industry for future projects by focusing on the critical aspects of occupied construction and the manner in which to succeed with it.

  2. Construction in Occupied Spaces

    Science.gov (United States)

    Ward, Andrew E.; Azhar, Salman; Khalfan, Malik

    2017-06-01

    Conducting construction activities in occupied environments presents a great challenge due to the additional logistical requirements and the presence of the building occupants. The aim of this research is to gather and evaluate the means and methods to successfully plan, manage, and execute construction activities in occupied spaces in an effort to provide consolidated industry tools and strategies for maintaining a schedule and minimizing the impact on the occupants. The methodology of the research utilizes an exploratory approach to gather qualitative data. The data was collected through interviews with industry professionals to identify industry best practices. The semi-structured interviews provided a platform for the documents, lessons learned, and the techniques and strategies used for occupied construction by the construction industry. The information obtained in the interview process identified six themes that are critical to achieving and maintaining quality in occupied construction. These themes of the schedule, cost, customer satisfaction, planning, fire/life safety and utilities, and contractor management are reviewed in detail, and the paper discusses how to manage each element. The analysis and extracted management techniques, procedures and strategies can be used by the construction industry for future projects by focusing on the critical aspects of occupied construction and the manner in which to succeed with it.

  3. A Reasoning Architecture for Expert Troubleshooting of Complex Processes

    Data.gov (United States)

    National Aeronautics and Space Administration — This paper introduces a novel reasoning methodology, in combination with appropriate models and measurements (data) to perform accurately and expeditiously expert...

  4. AP1000 construction schedule

    International Nuclear Information System (INIS)

    Winters, J.W.

    2001-01-01

    Westinghouse performed this study as part of EPRI interest in advancing the use of computer aided processes to reduce the cost of nuclear power plants. EPRI believed that if one could relate appropriate portions of an advanced light water reactor plant model to activities in its construction sequence, and this relationship could be portrayed visually, then optimization of the construction sequence could be developed as never before. By seeing a 3-D representation of the plant at any point in its construction sequence, more informed decisions can be made on the feasibility or attractiveness of follow on or parallel steps in the sequence. The 3-D representation of construction as a function of time (4-D) could also increase the confidence of potential investors concerning the viability of the schedule and the plant ultimate cost. This study performed by Westinghouse confirmed that it is useful to be able to visualize a plant construction in 3-D as a function of time in order to optimize the sequence of construction activities. (author)

  5. ABWR construction experience in Japan

    International Nuclear Information System (INIS)

    Kawahata, Junichi; Miura, Jun; Saito, Fuyuki; Mori, Hiroya

    2003-01-01

    The construction of Kashiwazaki-Kariwa Nuclear Power Station Unit No. 6 and 7 (K6 and 7) owned by Tokyo Electric Power Company (TEPCO), have been in service since November 1996 and September 1997 respectively, and are the first ABWRs in the world. Hitachi, Ltd. and Toshiba Corporation took part in the projects and achieved safety construction in 52- month schedule from rock inspection to turnover in cooperation with TEPCO and other contractors with broad experience in BWRs. Taking advantage of experience of the Kashiwazaki construction, the ABWR construction methods realize to satisfy with requests from electric power companies and to fit site conditions. The Chubu Electric Power Company's Hamaoka Nuclear Power Station Unit No. 5 (Hamaoka 5) and Hokuriku Electric Power Company's Shika Nuclear Power Station Unit No. 2 (Shika 2), which are ABWRs, completed rock inspection in May 2000 and June 2001 respectively, and are under construction. The ABWR construction methods are proved their validity through four actual construction projects. Safe constructions with the highest quality have been advanced thus further aiming at the introduction of the latest technologies and contributing to reduce plant construction costs and also to shorten schedule. (author)

  6. Safety in construction?

    NARCIS (Netherlands)

    Swuste, P.H.J.J.

    2013-01-01

    The available literature on Construction Safety is not very optimistic about the chances of evidence-based safety in the construction industry exerting a positive influence. Many articles indicate that the structures and processes that are designed to ensure safety in the industry are poor. Safety

  7. Construction Safety Forecast for ITER

    Energy Technology Data Exchange (ETDEWEB)

    cadwallader, lee charles

    2006-11-01

    The International Thermonuclear Experimental Reactor (ITER) project is poised to begin its construction activity. This paper gives an estimate of construction safety as if the experiment was being built in the United States. This estimate of construction injuries and potential fatalities serves as a useful forecast of what can be expected for construction of such a major facility in any country. These data should be considered by the ITER International Team as it plans for safety during the construction phase. Based on average U.S. construction rates, ITER may expect a lost workday case rate of < 4.0 and a fatality count of 0.5 to 0.9 persons per year.

  8. Innovations in nuclear concrete constructions

    International Nuclear Information System (INIS)

    Tatum, C.B.

    1983-01-01

    The technical requirements and scope of concrete work on nuclear projects present significant engineering and construction challenges. These demands represent the extremes in many areas of construction operations. In meeting these challenges, engineering and construction forces have developed several innovations which can be beneficially applied to other types of construction. Innovative approaches in the general categories of engineering scope, construction input to engineering, work planning, special methods and techniques, and satisfaction of quality assurance requirements are given in this paper. The transfer of this technology to other segments of the construction industry will improve overall performance by avoiding the problem areas encountered on nuclear projects

  9. 23 CFR 140.607 - Construction.

    Science.gov (United States)

    2010-04-01

    ... 23 Highways 1 2010-04-01 2010-04-01 false Construction. 140.607 Section 140.607 Highways FEDERAL... Bond Issue Projects § 140.607 Construction. Construction shall be supervised by the SHA in the same manner as for regularly financed Federal-aid projects. The FHWA will make construction inspections and...

  10. 25 CFR 900.118 - Do these “construction contract” regulations apply to construction management services?

    Science.gov (United States)

    2010-04-01

    ... construction management services? 900.118 Section 900.118 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE...” regulations apply to construction management services? No. Construction management services may be contracted separately under section 108 of the Act. Construction management services consultants and/or Indian tribe or...

  11. PRIORITISING LEAN CONSTRUCTION BARRIERS IN UGANDA'S CONSTRUCTION INDUSTRY

    Directory of Open Access Journals (Sweden)

    Henry Mwanaki Alinaitwe

    2009-06-01

    Full Text Available Engaging in lean construction efforts could prove to be highly rewarding for building firms in Uganda. However, lean construction is risky and can be disastrous if not properly managed. Lean production efforts in some other countries have not been successful due to the many barriers to its successful implementation. To enable sound lean construction efforts and to increase the chances of success in eliminating waste, a thorough investigation of the barriers is essential. This study presents 31 barriers and investigates their influence (strength on the success of lean construction initiatives. Structured interviews were carried out with technical managers of building firms to assess their perception of the barriers to lean production based on their experience at their firms. The strongest barrier is the provision of inputs exactly when required. Additionally, the barriers were ranked according to the ease of overcoming each. The easiest barrier to overcome is keeping the required items in the right place. Finally, a graphical aid is provided to enable decision makers to concentrate their efforts on the influential (strong, yet easy to overcome barriers. A lack of buildable designs and a participative management style for the workforce are the most important barriers to successful waste reduction in terms of strength and ease of overcoming. On the other hand, a lack of an organisational culture that supports teamwork, a lack of prefabrication and a lack of knowledgeable and skilled workers are regarded as low in strength, and at the same time difficult to overcome.

  12. 6 CFR 7.23 - Emergency release of classified information.

    Science.gov (United States)

    2010-01-01

    ... Classified Information Non-disclosure Form. In emergency situations requiring immediate verbal release of... information through approved communication channels by the most secure and expeditious method possible, or by...

  13. Safety in construction industry

    International Nuclear Information System (INIS)

    Khan, A.M.

    1979-01-01

    Causative factors of accidents in construction industry in the context of experience of construction work of the Rajasthan Atomic Power Project are enumerated. The aspect of accident cost - direct and indirect - is discussed briefly. Setting up of a safety set-up at construction sites is emphasized and principles which should guide the accident prevention programme are spelt out. (M.G.B.)

  14. Document management in engineering construction

    International Nuclear Information System (INIS)

    Liao Bing

    2008-01-01

    Document management is one important part of systematic quality management, which is one of the key factors to ensure the construction quality. In the engineering construction, quality management and document management shall interwork all the time, to ensure the construction quality. Quality management ensures that the document is correctly generated and adopted, and thus the completeness, accuracy and systematicness of the document satisfy the filing requirements. Document management ensures that the document is correctly transferred during the construction, and various testimonies such as files and records are kept for the engineering construction and its quality management. This paper addresses the document management in the engineering construction based on the interwork of the quality management and document management. (author)

  15. Careers in Construction: Construction Industry Series: Student Manual and Instructor's Guide.

    Science.gov (United States)

    Texas Education Agency, Austin. Dept. of Occupational Education and Technology.

    The guide for instructors of construction occupations provides instructional suggestions and informational sources for structuring an exploratory program. The program is divided into the following blocks, representing different experiences in construction: (1) wood; (2) finishing; (3) engineering, support, and management services; (4) metal; (5)…

  16. Governmentalities of Construction

    DEFF Research Database (Denmark)

    Gottlieb, Stefan; Jensen, Jens Stissing

    2016-01-01

    In this paper, we apply Foucault’s concept of governmentality in a dual analysis of the formation and transformation of the construction sector and the construction worker. The governmentality concept is well-suited for such an analysis as it directs attention to the ways in which control is the ...

  17. Operations management for construction

    CERN Document Server

    March, Chris

    2009-01-01

    Students studying construction management and related subjects need to have a broad understanding of the major aspects of controlling the building processes. Operations Management for Construction is one of three textbooks (Business Organisation, Operations Management and Finance Control) written to systematically cover the field. Focusing on construction sites and operations which are challenging to run, Chris March explores issues such as the setting up of the site, the deciding of the methodology of construction, and the sequence of work and resourcing. As changing and increasing regulations affect the way sites are managed, he also considers the issues and methods of successful administering, safety, quality and environment. Finally, the contractor's responsibility to the environment, including relationships with third parties, selection of materials, waste management and sustainability is discussed. Chris March has a wealth of practical experience in the construction industry, as well as considerable exp...

  18. VENTILATION NEEDS DURING CONSTRUCTION

    International Nuclear Information System (INIS)

    C.R. Gorrell

    1998-01-01

    The purpose of this analysis is to determine ventilation needs during construction and development of the subsurface repository and develop systems to satisfy those needs. For this analysis, construction is defined as pre-emplacement excavation and development is excavation that takes place simultaneously with emplacement. The three options presented in the ''Overall Development and Emplacement Ventilation Systems'' analysis (Reference 5.5) for development ventilation will be applied to construction ventilation in this analysis as well as adding new and updated ventilation factors to each option for both construction and development. The objective of this analysis is to develop a preferred ventilation system to support License Application Design. The scope of this analysis includes: (1) Description of ventilation conditions; (2) Ventilation factors (fire hazards, dust control, construction logistics, and monitoring and control systems); (3) Local ventilation alternatives; (4) Global ventilation options; and (5) Evaluation of options

  19. VE of construction industry

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1987-10-15

    This book gives descriptions of basic of VE of construction industry including doing away with mannerism, necessity of cost reduction, management method of cost reduction, thinking of idea, target of VE, starting VE activity, technical method of VE of construction industry such as thinking of idea with brainstorming, function trade method, new brainstorming, MM method, morphology analysis and lateral thinking, cases of VE of construction industry.

  20. VE of construction industry

    International Nuclear Information System (INIS)

    1987-10-01

    This book gives descriptions of basic of VE of construction industry including doing away with mannerism, necessity of cost reduction, management method of cost reduction, thinking of idea, target of VE, starting VE activity, technical method of VE of construction industry such as thinking of idea with brainstorming, function trade method, new brainstorming, MM method, morphology analysis and lateral thinking, cases of VE of construction industry.

  1. 77 FR 45696 - Further Amendment to Memorandum Describing Authority and Assigned Responsibilities of the General...

    Science.gov (United States)

    2012-08-01

    ... expeditious performance of its primary function and responsibility of deciding cases, the authority and... the Board Members' Offices, the Division of Judges, the Division of Information, the Security Office...

  2. 48 CFR 22.804-2 - Construction.

    Science.gov (United States)

    2010-10-01

    ... 48 Federal Acquisition Regulations System 1 2010-10-01 2010-10-01 false Construction. 22.804-2... Construction. (a) Construction contractors that hold a nonexempt (see 22.807) Government construction contract... affirmative action requirements that specify goals for minorities and women in covered construction trades...

  3. 46 CFR 160.054-3 - Construction.

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 6 2010-10-01 2010-10-01 false Construction. 160.054-3 Section 160.054-3 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) EQUIPMENT, CONSTRUCTION, AND MATERIALS... Construction. (a) Construction. The container shall be constructed of tough transparent material, not less than...

  4. Professional entrepreneurial identity construction

    DEFF Research Database (Denmark)

    Ramsgaard, Michael Breum

    The present study investigates the construction of a professional identity as an entrepreneur in a sample of people with educational background in nutrition and health. The study examines the connection between professional identity construction and entrepreneurial business emergence using...... ‘entrepreneurial preparedness’ as parameter. This research seeks to address the following questions: What significant components or characteristics do entrepreneurs rely on in the early processes of constructing an entrepreneurial identity....

  5. Construction Manager or General Contractor?

    Science.gov (United States)

    McKinley, John

    1991-01-01

    Unlike the general contractor approach, the construction management firm acts on behalf of the school district in school construction. Examines the development and nature of construction management, and cites its advantages and disadvantages. (MLF)

  6. Organizational Behaviour in Construction

    DEFF Research Database (Denmark)

    Kreiner, Kristian

    2013-01-01

    Review of: Organizational Behaviour in Construction / Anthony Walker (Wiley-Blackwell,2011 336 pp)......Review of: Organizational Behaviour in Construction / Anthony Walker (Wiley-Blackwell,2011 336 pp)...

  7. Constructing sanctions

    DEFF Research Database (Denmark)

    Jaeger, Mark Daniel

    2016-01-01

    such an effect. This paper explores sanctions conflicts as social constructs. It purports that rally-around-the-flag is all but one part of the discursive dimension of sanctions conflicts. Sanctions are intricately connected with the conflict setting they occur in. The study suggests a dialectical relation...... between how opponents perceive conflicts and the meaning of sanctions therein. This nexus of different constructions of sanctions moreover extends to “targeted” sanctions as well: As restrictive measures against Zimbabwe demonstrate, they are not the kind of minimally-invasive operations with clinical...

  8. Predictable grammatical constructions

    DEFF Research Database (Denmark)

    Lucas, Sandra

    2015-01-01

    My aim in this paper is to provide evidence from diachronic linguistics for the view that some predictable units are entrenched in grammar and consequently in human cognition, in a way that makes them functionally and structurally equal to nonpredictable grammatical units, suggesting that these p......My aim in this paper is to provide evidence from diachronic linguistics for the view that some predictable units are entrenched in grammar and consequently in human cognition, in a way that makes them functionally and structurally equal to nonpredictable grammatical units, suggesting...... that these predictable units should be considered grammatical constructions on a par with the nonpredictable constructions. Frequency has usually been seen as the only possible argument speaking in favor of viewing some formally and semantically fully predictable units as grammatical constructions. However, this paper...... semantically and formally predictable. Despite this difference, [méllo INF], like the other future periphrases, seems to be highly entrenched in the cognition (and grammar) of Early Medieval Greek language users, and consequently a grammatical construction. The syntactic evidence speaking in favor of [méllo...

  9. 38 CFR 18.423 - New construction.

    Science.gov (United States)

    2010-07-01

    ... 38 Pensions, Bonuses, and Veterans' Relief 2 2010-07-01 2010-07-01 false New construction. 18.423... construction. (a) Design and construction. Each facility or part of a facility constructed by, on behalf of, or... facility is readily accessible to and usable by handicapped persons, if the construction was commenced...

  10. 10 CFR 1040.73 - New construction.

    Science.gov (United States)

    2010-01-01

    ... 10 Energy 4 2010-01-01 2010-01-01 false New construction. 1040.73 Section 1040.73 Energy... § 1040.73 New construction. (a) Design and construction. Each facility or part of a facility constructed... the construction was commenced after the effective date of this subpart. (b) Alteration. Each facility...

  11. Model Tests on the Retaining Walls Constructed from Geobags Filled with Construction Waste

    Directory of Open Access Journals (Sweden)

    Hua Wen

    2016-01-01

    Full Text Available Geobag retaining wall using construction waste is a new flexible supporting structure, and the usage of construction waste to fill geobags can facilitate the construction recycling. In this paper, model tests were performed on geobag retaining wall using construction waste. The investigation was concentrated on the slope top settlement, the distribution characteristics of the earth pressures on retaining walls and horizontal wall displacements, and slope failure modes. The results indicated that the ultimate loads that the slope tops with retaining walls could bear were 87.5%~125% higher than that of the slope top without retaining walls. The ultimate loading of strengthened slopes with different slope ratios from 1 : 0.75 to 1 : 0.25 could be reduced by 11.8% to 29.4%. The horizontal displacements of the retaining walls constructed from geobags were distributed in a drum shape, with the greatest horizontal displacements occurring about 1/3~1/2 of the wall height away from the bottom of the wall. As the slope ratio increased, the failure of the slope soil supported by geobag retaining wall using construction waste changed from sliding to sliding-toppling (dominated by sliding and then to toppling-sliding (dominated by toppling. The range of 1/3~1/2 of wall height is the weak part of the retaining walls, which should be strengthened with certain measures during the process of design and construction.

  12. Construction Management Meets Today's Realities.

    Science.gov (United States)

    Day, C. William

    1979-01-01

    Construction management--the control of cost and time from concept through construction--grew out of a need to meet the realities of today's economy. A checklist of services a construction manager provides is presented. (Author/MLF)

  13. Relationship between Performance of Quantity Surveying Students in Building Construction and Construction Measurement Courses

    Directory of Open Access Journals (Sweden)

    Olatunde Nathaniel Ayinde

    2018-01-01

    Full Text Available Stakeholders in the educational sector over the century have devoted substantial resources in seeking ways of improving students’ academic performance, yet, the desired improved academic performance has not been achieved. By appraising the relationship between the performance of Quantity Surveying (QS students in Building Construction and Construction Measurement courses; the study identified a major curriculum drafting deficiency in the QS programmes in Nigeria which if addressed could help achieve the much needed improved students’ academic performance. The specific objectives of the study were to determine the performance of QS students in Building construction and construction Measurement Courses; and to determine whether a relationship exist in the performances of QS students in the two subject areas. Purposive sampling technique was used to select Federal Polytechnic Ede, Osun State for the study. Random sampling technique was used to select 241 students who provide data for the study. Close ended questionnaire was used to collect data for the study and data was analyzed using frequency, percentile and correlation analysis. Finding indicates that 43% of the respondents on the average put up good performances in Building Construction Courses while only 19% of the respondents on the average had good grades in Construction Measurement Courses. Results also showed that a significant relationship exist between the performance of QS students in Building Construction and Construction Measurement courses as 83.3% (five out of six pair courses shows significant positive linear correlation. The study recommends that a quick curriculum re-adjustment should be initiated so as to enhance improved academic performance by QS Students especially in Construction Measurement courses.

  14. Nuclear reactor constructions

    International Nuclear Information System (INIS)

    Baddley, A.H.

    1981-01-01

    A method of constructing a radiation shielding plug for use in the roof of the coolant containment vault of liquid metal cooled fast breeder reactors is described. The construction allows relative movement of that part of service cables and pipes which are carried by the fixed roof and that part which is carried by the rotatable plug. (U.K.)

  15. 50 CFR 29.21-5 - Construction.

    Science.gov (United States)

    2010-10-01

    ... 50 Wildlife and Fisheries 6 2010-10-01 2010-10-01 false Construction. 29.21-5 Section 29.21-5... Construction. (a) If construction is not commenced within two (2) years after date of right-of-way grant, the...) Proof of construction: Upon completion of construction, the applicant shall file a certification of...

  16. 45 CFR 84.23 - New construction.

    Science.gov (United States)

    2010-10-01

    ... 45 Public Welfare 1 2010-10-01 2010-10-01 false New construction. 84.23 Section 84.23 Public... construction. (a) Design and construction. Each facility or part of a facility constructed by, on behalf of, or... of the facility is readily accessible to and usable by handicapped persons, if the construction was...

  17. 10 CFR 50.23 - Construction permits.

    Science.gov (United States)

    2010-01-01

    ... 10 Energy 1 2010-01-01 2010-01-01 false Construction permits. 50.23 Section 50.23 Energy NUCLEAR... Description of Licenses § 50.23 Construction permits. A construction permit for the construction of a... part 52 of this chapter, the construction permit and operating license are deemed to be combined in a...

  18. Managing the construction bidding process : a move to simpler construction plan sets

    Science.gov (United States)

    2001-01-31

    This project was conducted to determine whether construction plan sets could be significantly simplified to speed the process of moving projects to construction. The work steps included a literature review, a telephone survey of highway agencies in s...

  19. Construction of fast experimental reactor 'Joyo' from start of construction to criticality

    International Nuclear Information System (INIS)

    Sakata, Hajime

    1977-01-01

    The fast experimental reactor ''Joyo'' is a sodium-cooled, fast neutron reactor using mixed oxide of uranium and plutonium, the first in Japan. The purposes of its construction are to experience and solve the various technical problems expected in the constructions of the prototype reactor ''Monju'' and future practical reactors, and to use as the irradiation facility for developing the fuel and material for fast breeder reactors in Japan after the completion. The construction finished by the end of 1974, and the synthetic functional test was carried out for about two years thereafter. The whole installation was handed over to PNC on March 8, 1977. The reactor attained the criticality on April 24, 1977. The outline of the construction works is described. ''Guidance to the structural design of sodium machinery for Joyo'' was compiled, and the analysis was made according to it. Moreover, various inspection standards regarding welding, electrical machinery, fuel and others were made. The revision of the design for improving the safety and performance was made during the construction at all times. The synthetic functional test was carried out for about two years on 266 items, and subsequently, the criticality test was completed satisfactorily. (Kako, I.)

  20. 41 CFR 102-80.75 - Who assesses environmental issues in Federal construction and lease construction projects?

    Science.gov (United States)

    2010-07-01

    ... environmental issues in Federal construction and lease construction projects? 102-80.75 Section 102-80.75 Public... Management Assessment of Environmental Issues § 102-80.75 Who assesses environmental issues in Federal construction and lease construction projects? Federal agencies must assess required environmental issues...

  1. A novel methodology to estimate the evolution of construction waste in construction sites.

    Science.gov (United States)

    Katz, Amnon; Baum, Hadassa

    2011-02-01

    This paper focuses on the accumulation of construction waste generated throughout the erection of new residential buildings. A special methodology was developed in order to provide a model that will predict the flow of construction waste. The amount of waste and its constituents, produced on 10 relatively large construction sites (7000-32,000 m(2) of built area) was monitored periodically for a limited time. A model that predicts the accumulation of construction waste was developed based on these field observations. According to the model, waste accumulates in an exponential manner, i.e. smaller amounts are generated during the early stages of construction and increasing amounts are generated towards the end of the project. The total amount of waste from these sites was estimated at 0.2m(3) per 1m(2) floor area. A good correlation was found between the model predictions and actual data from the field survey. Copyright © 2010 Elsevier Ltd. All rights reserved.

  2. Elaboration of technology organizational models of constructing high-rise buildings in plans of construction organization

    Science.gov (United States)

    Osipenkova, Irina; Simankina, Tatyana; Syrygina, Taisiia; Lukinov, Vitaliy

    2018-03-01

    This article represents features of the elaboration of technology organizational models of high-rise building construction in technology organizational documentation on the example of the plan of construction organization. Some examples of enhancing the effectiveness of high-rise building construction based on developments of several options of the organizational and technological plan are examined. Qualitative technology organizational documentation allows to increase the competitiveness of construction companies and provides prime cost of construction and assembly works reductions. Emphasis is placed on the necessity to comply with the principle of comprehensiveness of engineering, scientific and research works, development activities and scientific and technical support.

  3. BASES OF CONSTRUCTIVITY OF MODERN PERSONALITY

    Directory of Open Access Journals (Sweden)

    Natalya Petrovna Shatalova

    2014-11-01

    Full Text Available Formation of bases of constructibility is important process at this stage of de-velopment of our state. Personality of modern type must be capable to self-determination, competent adoption of constructive decisions and manifestation of a personal responsibility for the constructive election, personality of modern type must be capable for self-determination, competent adoption of constructive decisions and manifestation to a personal responsibility for the constructive choice. Formation of bases of constructibility in the course of education is caused by use of constructive tasks and the constructive educational environment which define innovative recep-tions and skills of influence as methods of pedagogical influence taking into account constantly changing circumstances. Extent of mastering each member of society bases of constructibility defines a spiritual condition of society, of the present and the future of our country, development of economy and culture in general.Purpose: consideration of question about development of constructive thinking and constructive skills of personality in modern constructive educational environ-ment.Methodology: formal pedagogical method, the theoretical modeling, the meth-od of participant observation.Results. In the article is give the short analysis of problem of development of personality in modern society, opened the concept of constructibility of the personali-ty and her basic components, classification constructive tasks investigated, specified preparatory steps for organization of the conditions of development of a constructibil-ity and gives a brief description of their. Article has the scientific value as contains au-thor's generalizations possessing scientific novelty and the conclusions directed on disclosure of problems of formation and development of the modern personality, considered from the point of view of the theory of democratic constructivism in edu-cation.Practical implications: pedagogical

  4. Social cost in construction projects

    International Nuclear Information System (INIS)

    Çelik, Tolga; Kamali, Saeed; Arayici, Yusuf

    2017-01-01

    Despite the fact that completion of construction projects has a direct positive impact on the growth of national and local economies as well as humans' wellbeing, construction projects, especially in the urban areas, generate serious environmental nuisances for the adjacent residents and have unintentional adverse impacts on their surrounding environment. Construction causative adverse impacts on the neighbouring communities are known as the social costs. This study aims to present a state-of-the-art overview of social costs in construction industry in terms of definition, consideration, classification and quantification. Furthermore, it is aimed to bring the construction social cost phenomenon for the agenda of Environmental Impact Assessors.

  5. Social cost in construction projects

    Energy Technology Data Exchange (ETDEWEB)

    Çelik, Tolga, E-mail: tolga.celik@emu.edu.tr [Department of Civil Engineering, Eastern Mediterranean University, Famagusta, T.R. North Cyprus, Via Mersin 10 (Turkey); Kamali, Saeed, E-mail: saeedkamali2002@gmail.com [Civil Engineering Department, Middle East Technical University, 06800 Ankara (Turkey); Arayici, Yusuf, E-mail: yusuf.arayici@hku.edu.tr [Department of Civil Engineering, Hasan Kalyoncu University, Gaziantep (Turkey)

    2017-05-15

    Despite the fact that completion of construction projects has a direct positive impact on the growth of national and local economies as well as humans' wellbeing, construction projects, especially in the urban areas, generate serious environmental nuisances for the adjacent residents and have unintentional adverse impacts on their surrounding environment. Construction causative adverse impacts on the neighbouring communities are known as the social costs. This study aims to present a state-of-the-art overview of social costs in construction industry in terms of definition, consideration, classification and quantification. Furthermore, it is aimed to bring the construction social cost phenomenon for the agenda of Environmental Impact Assessors.

  6. Construction industry in developing countries

    Energy Technology Data Exchange (ETDEWEB)

    Moavenzadeh, F

    1978-01-01

    This paper provides a review of the construction capability available in the developing countries to meet the demand for shelter. It discusses the role of construction in the process of development and its importance to economic growth. It considers the issue facing the growth of a viable indigenous construction industry in the developing world within the context of the activities involved in the creation of constructed facilities--planning, design, contruction and maintenance; it also examines the environment within which the industry has developed. For each construction activity the paper reviews available capabilities, the various resources needed for the development of an indigenous industry, and some possible means of accommodating these needs.

  7. Quantitative Identification of Construction Risk

    OpenAIRE

    Kasprowicz T.

    2017-01-01

    Risks pertaining to construction work relate to situations in which various events may randomly change the duration and cost of the project or worsen its quality. Because of possible significant changes of random events, favorable, moderate, and difficult conditions of construction work are considered. It is the first stage of the construction risk analysis. The probabilistic parameters of construction are identified and described by using the design characteristics model of the structure and...

  8. Silane@TiO2 nanoparticles-driven expeditious synthesis of ...

    Indian Academy of Sciences (India)

    of substituted benzo[4,5]imidazo[1,2-a]chromeno[4,3-d]pyrimidin-6-one by a reaction of ..... mal decomposition of the grafted vinyltriethoxy silane on the TiO2 .... using silane@TiO2 nanoparticles.a. Entry. Ar. Product Time (h) Yield (%)c. M.p. (.

  9. An expeditious green synthesis of Schiff bases and azetidinones ...

    Indian Academy of Sciences (India)

    phuric acid, phosphoric acid, PPA, HF may also be catalysed by Lewis acids. Magnesium perchlorate has been found to be an efficient catalyst for the synthesis of imines and phenylhydrazones from carbonyl com- pounds with amines and phenylhydrazine in high yields at room temperatures in short times. Especially, the.

  10. Construction Sector (NAICS 23)

    Science.gov (United States)

    Find environmental regulatory information for the construction sector, including the construction of buildings or engineering projects. This includes RCRA information for hazardous waste, refrigeration compliance, asbestos, effluent guidelines & lead laws

  11. An introduction to niche construction theory.

    Science.gov (United States)

    Laland, Kevin; Matthews, Blake; Feldman, Marcus W

    Niche construction refers to the modification of selective environments by organisms. Theoretical and empirical studies of niche construction are increasing in importance as foci in evolutionary ecology. This special edition presents theoretical and empirical research that illustrates the significance of niche construction to the field. Here we set the scene for the following papers by (1) discussing the history of niche construction research, (2) providing clear definitions that distinguish niche construction from related concepts such as ecosystem engineering and the extended phenotype, (3) providing a brief summary of the findings of niche construction research, (4) discussing the contribution of niche construction and ecological inheritance to (a) expanded notions of inheritance, and (b) the extended evolutionary synthesis, and (5) briefly touching on some of the issues that underlie the controversies over niche construction.

  12. Imperfect construction of microclusters

    Science.gov (United States)

    Schneider, E.; Zhou, K.; Gilbert, G.; Weinstein, Y. S.

    2014-01-01

    Microclusters are the basic building blocks used to construct cluster states capable of supporting fault-tolerant quantum computation. In this paper, we explore the consequences of errors on microcluster construction using two error models. To quantify the effect of the errors we calculate the fidelity of the constructed microclusters and the fidelity with which two such microclusters can be fused together. Such simulations are vital for gauging the capability of an experimental system to achieve fault tolerance.

  13. The supply chain of civil construction industries for support the nuclear power plant construction in Indonesia

    International Nuclear Information System (INIS)

    Dharu Dewi; Sriyana; Moch-Djoko Birmano; Sahala Lumbanraja; Nurlaila

    2013-01-01

    The use of domestic products for electricity infrastructure has been set out in the Ministerial Decree number: 54/M-IND/PER/3/2012, but the infrastructure of nuclear power plants (NPP) construction has not been included. Therefore, the potential of the local industries needs to be mapped it especially supply chain of civil construction industries to estimate the capability of the local component level (DCL) at the nuclear power plant project in Indonesia. NPP is a high-technology so that if NPP will be constructed, it is necessary to involve the national capability as media technology transfer, especially for EPC (Engineering, Procurement and Construction) services. Civil construction (civil part) play role is very large, about 21%. Therefore it is necessary in particular the role of the national civil construction industry to increase the capability of local content. Preparation of Civil construction infrastructure are depend on the supply chain of raw materials. The aim of the research was to map the supply chain of the civil construction industries. Methodology this study is a survey of national industries, literature review, and searching web site. The result study is a map of civil construction industries with raw material supply chain. (author)

  14. 20 CFR 655.1030 - Service and computation of time.

    Science.gov (United States)

    2010-04-01

    ... EMPLOYMENT OF FOREIGN WORKERS IN THE UNITED STATES Enforcement of the Attestation Process for Attestations... authorized where service is by mail. In the interest of expeditious proceedings, the administrative law judge...

  15. 20 CFR 655.1230 - What time limits are imposed in ALJ proceedings?

    Science.gov (United States)

    2010-04-01

    ... OF LABOR TEMPORARY EMPLOYMENT OF FOREIGN WORKERS IN THE UNITED STATES What are the Department's... where service is by mail. In the interest of expeditious proceedings, the administrative law judge may...

  16. 77 FR 16030 - FY2012 Supplemental Funding for Brownfields Revolving Loan Fund (RLF) Grantees

    Science.gov (United States)

    2012-03-19

    ... loan fund to enhance remediation and provide funds on a continuing basis; and (IV) Such other similar... be started and completed expeditiously (i.e. ``shovel-ready'' projects) and will lead to...

  17. Construction time of PWRs

    Energy Technology Data Exchange (ETDEWEB)

    Carajilescov, Pedro; Moreira, Joao M.L., E-mail: pedro.carajilescov@ufabc.edu.b, E-mail: joao.moreira@ufabc.edu.b [Universidade Federal do ABC (UFABC), Santo Andre, SP (Brazil). Center of Engineering, Modeling and Applied Social Sciences

    2011-07-01

    The cost of electricity generated by nuclear power is greatly affected by the capital cost, which is dependent on the construction time of the plant. This work analyses the construction time of PWRs in several countries with different market structure and licensing experience. Countries which succeeded to establish a more collaborative environment among utilities, constructors, regulators, and energy planners through effective partnerships were able to build PWRs in shorter times. The construction time in Germany, France and Russia was around 80 months and in Japan, about 60 months. The envelope of 95% of the cases includes a range between 50 and 250 months of construction time. The evaluations show that construction time of PWRs has been longer for countries that did not hold the technology to build their own reactors, and depended on contracts with foreign suppliers. The nominal power of the reactors was considered a measure of plant size, technology complexity and standardization. Countries with standardized reactor designs (France, Japan and Russia) were able to build plants in shorter times. (author)

  18. Construction time of PWRs

    International Nuclear Information System (INIS)

    Carajilescov, Pedro; Moreira, Joao M.L.

    2011-01-01

    The cost of electricity generated by nuclear power is greatly affected by the capital cost, which is dependent on the construction time of the plant. This work analyses the construction time of PWRs in several countries with different market structure and licensing experience. Countries which succeeded to establish a more collaborative environment among utilities, constructors, regulators, and energy planners through effective partnerships were able to build PWRs in shorter times. The construction time in Germany, France and Russia was around 80 months and in Japan, about 60 months. The envelope of 95% of the cases includes a range between 50 and 250 months of construction time. The evaluations show that construction time of PWRs has been longer for countries that did not hold the technology to build their own reactors, and depended on contracts with foreign suppliers. The nominal power of the reactors was considered a measure of plant size, technology complexity and standardization. Countries with standardized reactor designs (France, Japan and Russia) were able to build plants in shorter times. (author)

  19. Potential of Progressive Construction Systems in Slovakia

    Science.gov (United States)

    Kozlovska, Maria; Spisakova, Marcela; Mackova, Daniela

    2017-10-01

    Construction industry is a sector with rapid development. Progressive technologies of construction and new construction materials also called modern methods of construction (MMC) are developed constantly. MMC represent the adoption of construction industrialisation and the use of prefabrication of components in building construction. One of these modern methods is also system Varianthaus, which is based on, insulated concrete forms principle and provides complete production plant for wall, ceiling and roof elements for a high thermal insulation house construction. Another progressive construction system is EcoB, which represents an insulated precast concrete panel based on combination of two layers, insulation and concrete, produced in a factory as a whole. Both modern methods of construction are not yet known and wide-spread in the Slovak construction market. The aim of this paper is focused on demonstration of MMC using potential in Slovakia. MMC potential is proved based on comparison of the selected parameters of construction process - construction costs and construction time. The subject of this study is family house modelled in three material variants - masonry construction (as a representative of traditional methods of construction), Varianthaus and EcoB (as the representatives of modern methods of construction). The results of this study provide the useful information in decision-making process for potential investors of construction.

  20. Labor construction trends

    International Nuclear Information System (INIS)

    McCall, H.W.

    1976-01-01

    The increasing costs and schedule delays being experienced in construction projects have led companies to look for alternatives to their present methods of expansion. One of the facets being evaluated is the construction labor posture. As a result, more companies are employing open shop contractors. Certain benefits can be realized by open shop construction. Productivity, in terms of the time required and overall costs, is definitely improved at no sacrifice in quality. Before an owner decides to build a project open shop, however, he must be fully aware of the pro's and con's of both types of labor posture. He must know to select a capable open shop contractor and he must realize his obligations for a successful open shop program

  1. Cost Based Value Stream Mapping as a Sustainable Construction Tool for Underground Pipeline Construction Projects

    Directory of Open Access Journals (Sweden)

    Murat Gunduz

    2017-11-01

    Full Text Available This paper deals with application of Value Stream Mapping (VSM as a sustainable construction tool on a real construction project of installation of underground pipelines. VSM was adapted to reduce the high percentage of non-value-added activities and time wastes during each construction stage and the paper searched for an effective way to consider the cost for studied construction of underground pipeline. This paper is unique in its way that it adopts cost implementation of VSM to improve the productivity in underground pipeline projects. The data was observed and collected from site during construction, indicating the cycle time, value added and non-value added of each construction stage. The current state was built based on these details. This was an eye-opening exercise and a process management tool as a trigger for improvement. After the current state assessment, a future state is attempted by Value Stream Mapping tool balancing the resources using a Line of Balance (LOB technique. Moreover, a sustainable cost estimation model was developed during current state and future state to calculate the cost of underground pipeline construction. The result shows a cost reduction of 20.8% between current and future states. This reflects the importance of the cost based Value Stream Mapping in construction as a sustainable measurement tool. This new tool could be utilized in construction industry to add the sustainability and effective cost management.

  2. 48 CFR 915.404-4-71 - Profit and fee-system for construction and construction management contracts.

    Science.gov (United States)

    2010-10-01

    ... 48 Federal Acquisition Regulations System 5 2010-10-01 2010-10-01 false Profit and fee-system for construction and construction management contracts. 915.404-4-71 Section 915.404-4-71 Federal Acquisition... Contract Pricing 915.404-4-71 Profit and fee-system for construction and construction management contracts. ...

  3. Construction contracts law and management

    CERN Document Server

    Hughes, Will; Murdoch, John

    2015-01-01

    The fifth edition of this bestselling textbook has been thoroughly revised to provide the most up-to-date and comprehensive coverage of the legislation, administration and management of construction contracts. It now includes comparisons of working with JCT, NEC3, and FIDIC contracts throughout. Introducing this topic at the core of construction law and management, this book provides students with a one-stop reference on construction contracts. Significant new material covers: procurement tendering developments in dispute settlement commentary on all key legislation, case law and contract amendments In line with new thinking in construction management research, this authoritative guide is essential reading for every construction undergraduate and an extremely useful source of reference for practitioners.

  4. The Relevance of Causal Social Construction

    Directory of Open Access Journals (Sweden)

    Marques Teresa

    2017-02-01

    Full Text Available Social constructionist claims are surprising and interesting when they entail that presumably natural kinds are in fact socially constructed. The claims are interesting because of their theoretical and political importance. Authors like Díaz-León argue that constitutive social construction is more relevant for achieving social justice than causal social construction. This paper challenges this claim. Assuming there are socially salient groups that are discriminated against, the paper presents a dilemma: if there were no constitutively constructed social kinds, the causes of the discrimination of existing social groups would have to be addressed, and understanding causal social construction would be relevant to achieve social justice. On the other hand, not all possible constitutively socially constructed kinds are actual social kinds. If an existing social group is constitutively constructed as a social kind K, the fact that it actually exists as a K has social causes. Again, causal social construction is relevant. The paper argues that (i for any actual social kind X, if X is constitutively socially constructed as K, then it is also causally socially constructed; and (ii causal social construction is at least as relevant as constitutive social construction for concerns of social justice. For illustration, I draw upon two phenomena that are presumed to contribute towards the discrimination of women: (i the poor performance effects of stereotype threat, and (ii the silencing effects of gendered language use.

  5. Construction Professionals Job Performance and Characteristics: A Comparison of Indigenous and Expatriate Construction Companies in Nigeria

    Directory of Open Access Journals (Sweden)

    Henry Ndubuisi Onukwube

    2011-06-01

    Job performance is considered one of the most important constructs in human resources management because it helps to explain the value and utility that each employee adds to the organisation. The professionals in the Nigerian construction companies are not exception to the perceived low job performance rate within the industry. Extant literature points to the fact that job characteristics of employees can account for variance in their job performance rate.This study compares the job performance rate and job characteristics of construction professionals in indigenous and expatriate construction companies with a view to establish a relationship between job performance and job characteristics of construction professionals. A total of 762 questionnaires were collected and used for the study.  Eighty one (81 construction companies, 50 (62% indigenous and 31 (38% expatriate were selected using stratified random sampling technique. Data collected were analysed using mean item score, spearman rank correlation, linear regression analysis where appropriate. Findings of the study revealed that the relationship between job characteristics and job performance of construction professionals in construction companies in Nigeria is positive but low and the correlation coefficient is higher in expatriate construction companies. Based on the above finding, the study recommends that construction companies in Nigeria should endeavour and improve on their current core job dimensions (task significance, skill variety, task identity, autonomy and feedback inherent in various jobs designed within their respective organizations as this will constitute as one of the variants that will improve the job performance rate of construction professionals.

  6. Mortality table construction

    Science.gov (United States)

    Sutawanir

    2015-12-01

    Mortality tables play important role in actuarial studies such as life annuities, premium determination, premium reserve, valuation pension plan, pension funding. Some known mortality tables are CSO mortality table, Indonesian Mortality Table, Bowers mortality table, Japan Mortality table. For actuary applications some tables are constructed with different environment such as single decrement, double decrement, and multiple decrement. There exist two approaches in mortality table construction : mathematics approach and statistical approach. Distribution model and estimation theory are the statistical concepts that are used in mortality table construction. This article aims to discuss the statistical approach in mortality table construction. The distributional assumptions are uniform death distribution (UDD) and constant force (exponential). Moment estimation and maximum likelihood are used to estimate the mortality parameter. Moment estimation methods are easier to manipulate compared to maximum likelihood estimation (mle). However, the complete mortality data are not used in moment estimation method. Maximum likelihood exploited all available information in mortality estimation. Some mle equations are complicated and solved using numerical methods. The article focus on single decrement estimation using moment and maximum likelihood estimation. Some extension to double decrement will introduced. Simple dataset will be used to illustrated the mortality estimation, and mortality table.

  7. Supply Chain Management In Construction Revealed

    OpenAIRE

    Dr. Ghaith Al-Werikat

    2017-01-01

    The construction supply chain plays a major role in the construction market competition. Construction supply chain management assists enterprises by helping to improve competitiveness increase profits and have more control over the different factors and variables within the project. This paper discusses the construction supply chain characteristics challenges and problems supply chains encounter and the benefits of an integrated supply chain in the construction sector.

  8. Constructive Dimension and Turing Degrees

    OpenAIRE

    Bienvenu, Laurent; Doty, David; Stephan, Frank

    2007-01-01

    This paper examines the constructive Hausdorff and packing dimensions of Turing degrees. The main result is that every infinite sequence S with constructive Hausdorff dimension dim_H(S) and constructive packing dimension dim_P(S) is Turing equivalent to a sequence R with dim_H(R) 0. Furthermore, if dim_P(S) > 0, then dim_P(R) >= 1 - epsilon. The reduction thus serves as a *randomness extractor* that increases the algorithmic randomness of S, as measured by constructive dimension. A number of...

  9. Geotextiles in Flexible Pavement Construction

    Science.gov (United States)

    Alungbe, Gabriel D.

    2004-01-01

    People everywhere in the developed world regularly drive on paved roads. Learning about the construction techniques and materials used in paving benefits technology and construction students. This article discusses the use of geosynthetic textiles in pavement construction. It presents background on pavements and describes geotextiles and drainage…

  10. 46 CFR 108.235 - Construction.

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 4 2010-10-01 2010-10-01 false Construction. 108.235 Section 108.235 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) A-MOBILE OFFSHORE DRILLING UNITS DESIGN AND EQUIPMENT Construction and Arrangement Helicopter Facilities § 108.235 Construction. (a) Each helicopter deck must be...

  11. 23 CFR 650.209 - Construction.

    Science.gov (United States)

    2010-04-01

    ... 23 Highways 1 2010-04-01 2010-04-01 false Construction. 650.209 Section 650.209 Highways FEDERAL..., STRUCTURES, AND HYDRAULICS Erosion and Sediment Control on Highway Construction Projects § 650.209 Construction. (a) Permanent erosion and sediment control measures and practices shall be established and...

  12. Construction dust amelioration techniques.

    Science.gov (United States)

    2012-04-01

    Dust produced on seasonal road construction sites in Alaska is both a traffic safety and environmental concern. Dust emanating from : unpaved road surfaces during construction severely reduces visibility and impacts stopping sight distance, and contr...

  13. Grammatical Constructions as Relational Categories.

    Science.gov (United States)

    Goldwater, Micah B

    2017-07-01

    This paper argues that grammatical constructions, specifically argument structure constructions that determine the "who did what to whom" part of sentence meaning and how this meaning is expressed syntactically, can be considered a kind of relational category. That is, grammatical constructions are represented as the abstraction of the syntactic and semantic relations of the exemplar utterances that are expressed in that construction, and it enables the generation of novel exemplars. To support this argument, I review evidence that there are parallel behavioral patterns between how children learn relational categories generally and how they learn grammatical constructions specifically. Then, I discuss computational simulations of how grammatical constructions are abstracted from exemplar sentences using a domain-general relational cognitive architecture. Last, I review evidence from adult language processing that shows parallel behavioral patterns with expert behavior from other cognitive domains. After reviewing the evidence, I consider how to integrate this account with other theories of language development. Copyright © 2017 Cognitive Science Society, Inc.

  14. Nuclear power plant containment construction

    International Nuclear Information System (INIS)

    Schabert, H.P.; Danisch, R.; Strickroth, E.

    1975-01-01

    The Nuclear Power Plant Containment Construction includes the spherical steel safety enclosure for the reactor and the equipment associated with the reactor and requiring this type of enclosure. This steel enclosure is externally structurally protected against accident by a concrete construction providing a foundation for the steel enclosure and having a cylindrical wall and a hemispherical dome, these parts being dimensioned to form an annular space surrounding the spherical steel enclosure, the latter and the concrete construction heretofore being concentrically arranged with respect to each other. In the disclosed construction the two parts are arranged with their vertical axis horizontally offset from each other so that opposite to the offsetting direction of the concrete construction a relatively large space is formed in the now asymmetrical annular space in which reactor auxiliary equipment not requiring enclosure by the steel containment vessel or safety enclosure, may be located outside of the steel containment vessel and inside of the concrete construction where it is structurally protected by the latter

  15. Oxidative esterification via photocatalytic C-H activation

    Data.gov (United States)

    U.S. Environmental Protection Agency — Direct oxidative esterification of alcohol via photocatalytic C–H activation has been developed using VO@g-C3N4 catalyst; an expeditious esterification of alcohols...

  16. 20 CFR 655.640 - Service and computation of time.

    Science.gov (United States)

    2010-04-01

    ... EMPLOYMENT OF FOREIGN WORKERS IN THE UNITED STATES Enforcement of the Limitations Imposed on Employers Using... where service is by mail. In the interest of expeditious proceedings, the administrative law judge may...

  17. 20 CFR 655.830 - What rules apply to service of pleadings?

    Science.gov (United States)

    2010-04-01

    ... TEMPORARY EMPLOYMENT OF FOREIGN WORKERS IN THE UNITED STATES Enforcement of H-1B Labor Condition... where service is by mail. In the interest of expeditious proceedings, the administrative law judge may...

  18. Effective Safety Management in Construction Project

    Science.gov (United States)

    Othman, I.; Shafiq, Nasir; Nuruddin, M. F.

    2017-12-01

    Effective safety management is one of the serious problems in the construction industry worldwide, especially in large-scale construction projects. There have been significant reductions in the number and the rate of injury over the last 20 years. Nevertheless, construction remains as one of the high risk industry. The purpose of this study is to examine safety management in the Malaysian construction industry, as well as to highlight the importance of construction safety management. The industry has contributed significantly to the economic growth of the country. However, when construction safety management is not implemented systematically, accidents will happen and this can affect the economic growth of the country. This study put the safety management in construction project as one of the important elements to project performance and success. The study emphasize on awareness and the factors that lead to the safety cases in construction project.

  19. Supply Chain Management In Construction Revealed

    Directory of Open Access Journals (Sweden)

    Dr. Ghaith Al-Werikat

    2017-03-01

    Full Text Available The construction supply chain plays a major role in the construction market competition. Construction supply chain management assists enterprises by helping to improve competitiveness increase profits and have more control over the different factors and variables within the project. This paper discusses the construction supply chain characteristics challenges and problems supply chains encounter and the benefits of an integrated supply chain in the construction sector.

  20. Construction managers' perceptions of construction safety practices in small and large firms: a qualitative investigation.

    Science.gov (United States)

    Gillen, Marion; Kools, Susan; McCall, Cade; Sum, Juliann; Moulden, Kelli

    2004-01-01

    Despite the institution of explicit safety practices in construction, there continue to be exceedingly high rates of morbidity and mortality from work-related injury. This study's purpose was to identify, compare and contrast views of construction managers from large and small firms regarding construction safety practices. A complementary analysis was conducted with construction workers. A semi-structured interview guide was used to elicit information from construction managers (n = 22) in a series of focus groups. Questions were designed to obtain information on direct safety practices and indirect practices such as communication style, attitude, expectations, and unspoken messages. Data were analyzed using thematic content analysis. Managers identified a broad commitment to safety, worker training, a changing workplace culture, and uniform enforcement as key constructs in maintaining safe worksites. Findings indicate that successful managers need to be involved, principled, flexible, and innovative. Best practices, as well as unsuccessful injury prevention programs, were discussed in detail. Obstacles to consistent safety practice include poor training, production schedules and financial constraints. Construction managers play a pivotal role in the definition and implementation of safety practices in the workplace. In order to succeed in this role, they require a wide variety of management skills, upper management support, and tools that will help them instill and maintain a positive safety culture. Developing and expanding management skills of construction managers may assist them in dealing with the complexity of the construction work environment, as well as providing them with the tools necessary to decrease work-related injuries.

  1. Constructability - from Qinshan to the ACR

    International Nuclear Information System (INIS)

    Elgohary, M.; Fairclough, N.; Ricciuti, R.

    2003-01-01

    AECL has recognised the importance of Constructability for many years and is applying its principals to CANDU projects with increasing success. Constructability is defined as the consideration of construction knowledge and experience during all phases of a project, and recognizes that maximum benefit can be achieved during the concept phases of a project. The CANDU 6 Nuclear Power Plant has been constructed eleven times in the last 25 years, however, the last two units being completed on the Qinshan project in China have employed some very innovative construction methods that have not been used on the previous units. In order to make nuclear power generation more competitive, shorter construction schedules and reduced project costs and risks are essential objectives. The application of constructability principles is a major contributor to achieving these objectives. The success of Qinshan has increased the confidence in the new construction methods which are being implemented on the ACR (Advanced CANDU Reactor) successfully. An ACR construction strategy that utilizes advanced construction techniques has been developed by AECL. The strategy includes paralleling of activities by using extensive modularization and the vertical installation of equipment and modules into the reactor building, using a VHL (Very Heavy Lift) crane. This strategy allows short schedules to be met with a minimum risk to the project. This paper describes the latest construction methods used successfully on the Qinshan CANDU 6 project and looks at the extensive implementation of similar methods for ACR. It is concluded, based on the Qinshan success, that the ACR construction schedule is readily achievable. (author)

  2. 23 CFR 645.115 - Construction.

    Science.gov (United States)

    2010-04-01

    ... 23 Highways 1 2010-04-01 2010-04-01 false Construction. 645.115 Section 645.115 Highways FEDERAL... Relocations, Adjustments, and Reimbursement § 645.115 Construction. (a) Part 635, subpart B, of this title, Force Account Construction (justification required for force account work), states that it is cost...

  3. Bioinspired intramolecular Diels-Alder reaction: a rapid access to the highly-strained cyclopropane-fused polycyclic skeleton.

    Science.gov (United States)

    Zhu, Shifa; Guo, Zhengjiang; Huang, Zhipeng; Jiang, Huanfeng

    2014-02-24

    A bioinsipred gold-catalyzed tandem Diels-Alder/Diels-Alder reaction of an enynal and a 1,3-diene, forming the highly-strained benzotricyclo[3.2.1.0(2,7) ]octane skeleton, was reported. In contrast, a Diels-Alder/Friedel-Crafts tandem reaction occurred instead when silver salts were used as the catalyst. Although both reactions experienced the similar Diels-Alder reaction of a pyrylium intermediate with a 1,3-diene, they have different reaction mechanisms. The former proceeded with a stepwise Diels-Alder reaction, while the latter one with a concerted one. Copyright © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  4. Construction Technology of Long Span Bridges

    DEFF Research Database (Denmark)

    Gimsing, Niels Jørgen

    2000-01-01

    A large variety of construction methods are used during construction of major bridges, and in many cases the final structural system must be chosen with due respect to the construction process. Today the preferred construction methods are: the free-cantilever method, the launching method...

  5. Improving concrete overlay construction.

    Science.gov (United States)

    2010-03-01

    Several road construction projects involving concrete overlays at the state and county levels in Iowa in 2009 were studied for : construction techniques and methods. The projects that were evaluated consisted of sites in four Iowa counties: Osceola, ...

  6. Construction project management handbook.

    Science.gov (United States)

    2012-03-01

    The purpose of the FTA Construction Project Management Handbook is to provide guidelines for use by public transit agencies (Agen-cies) undertaking substantial construction projects, either for the first time or with little prior experience with cons...

  7. Workshop presentation: research guidelines for Construction Management

    Directory of Open Access Journals (Sweden)

    Marco Alvise Bragadin

    2013-10-01

    Full Text Available Nowadays the European economic system challenges the construction sector to take part to industrial recovery of western countries. In co-operation with the Construction Production research group of the Tampere University of of research about construction management tools and methods were detected. Research guidelines: 1 Construction management: tools and methods to manage construction projects 2 environmental impact of construction projects 3 construction management and safety 4 project procurement 5 construction management for major public works & complex projects

  8. 34 CFR 76.662 - Construction.

    Science.gov (United States)

    2010-07-01

    ... 34 Education 1 2010-07-01 2010-07-01 false Construction. 76.662 Section 76.662 Education Office of... State and Its Subgrantees? Participation of Students Enrolled in Private Schools § 76.662 Construction. A subgrantee shall insure that program funds are not used for the construction of private school...

  9. Financial management of the construction company

    Directory of Open Access Journals (Sweden)

    Antosova, Karolina

    2016-12-01

    Full Text Available This paper informs about the financial management in the construction company. The work describes problems of the management, its tasks, goals, dependencies on the size of the construction company and progress in the construction production and also introduce topic of the risks in the construction business. Also controlling and reporting in the construction company together with basic tools are described in example of Metrostav a.s. in this work.

  10. Nuclear power plant construction activity, 1986

    International Nuclear Information System (INIS)

    1987-01-01

    Cost estimates, chronological data on construction progress, and the physical characteristics of nuclear units in commercial operation and units in the construction pipeline as of December 31, 1986, are presented. This report, which is updated annually, was prepared to provide an overview of the nuclear power plant construction industry. The report contains information on the status of nuclear generating units, average construction costs and lead-times, and construction milestones for individual reactors

  11. Conceptual Model for Systematic Construction Waste Management

    OpenAIRE

    Abd Rahim Mohd Hilmi Izwan; Kasim Narimah

    2017-01-01

    Development of the construction industry generated construction waste which can contribute towards environmental issues. Weaknesses of compliance in construction waste management especially in construction site have also contributed to the big issues of waste generated in landfills and illegal dumping area. This gives sign that construction projects are needed a systematic construction waste management. To date, a comprehensive criteria of construction waste management, particularly for const...

  12. Construct ability Improvement for Nuclear Power Plants

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Dae Soo; Lee, Jong Rim; Kim, Jong Ku [Korea Electric Power Research Institute, Taejon (Korea, Republic of)

    1997-12-31

    The purpose of this study was to identify methods for improving the construct ability of nuclear power plants. This study reviewed several references of current construction practices of domestic and overseas nuclear plants in order to identify potential methods for improving construct ability. The identified methods for improving construct ability were then evaluated based on the applicability to domestic nuclear plant construction. The selected methods are expected to reduce the construction period, improve the quality of construction, cost, safety, and productivity. Selection of which methods should be implemented will require further evaluation of construction modifications, design changes, contract revisions. Among construction methods studied, platform construction methods can be applied through construction sequence modification without significant design changes, and Over the Top construction method of the NSSS, automatic welding of RCL pipes, CLP modularization, etc., are considered to be applied after design modification and adjustment of material lead time. (author). 49 refs., figs., tabs.

  13. 24 CFR 242.52 - Construction contracts.

    Science.gov (United States)

    2010-04-01

    ...; a construction management contract with a guaranteed maximum price, the final costs of which are... 24 Housing and Urban Development 2 2010-04-01 2010-04-01 false Construction contracts. 242.52... MORTGAGE INSURANCE FOR HOSPITALS Construction § 242.52 Construction contracts. (a) Awarding of contract. A...

  14. 25 CFR 700.467 - Construction costs.

    Science.gov (United States)

    2010-04-01

    ... 25 Indians 2 2010-04-01 2010-04-01 false Construction costs. 700.467 Section 700.467 Indians THE OFFICE OF NAVAJO AND HOPI INDIAN RELOCATION COMMISSION OPERATIONS AND RELOCATION PROCEDURES Discretionary Funds § 700.467 Construction costs. Construction costs and costs relating to construction such as...

  15. 10 CFR 4.128 - New construction.

    Science.gov (United States)

    2010-01-01

    ... 10 Energy 1 2010-01-01 2010-01-01 false New construction. 4.128 Section 4.128 Energy NUCLEAR... 1973, as Amended Discriminatory Practices § 4.128 New construction. (a) Design, construction, and... Federal Accessibility Standards. (1) Effective as of January 18, 1991, design, construction, or alteration...

  16. 45 CFR 1170.33 - New construction.

    Science.gov (United States)

    2010-10-01

    ... 45 Public Welfare 3 2010-10-01 2010-10-01 false New construction. 1170.33 Section 1170.33 Public... ASSISTED PROGRAMS OR ACTIVITIES Accessibility § 1170.33 New construction. (a) Design, construction, and... Federal Accessibility Standards. (1) Effective as of January 18, 1991, design, construction, or alteration...

  17. ITER towards the construction

    International Nuclear Information System (INIS)

    Shimomura, Y.

    2005-01-01

    The ITER Project has been significantly developed in the last few years in preparation for its construction. The ITER Participant's Negotiators have developed the Joint Implementation Agreement (JIA), ready for finalisation following selection of the construction site and nomination of the project's Director General. The ITER International Team and Participant Teams have continued technical and organisational preparations. Construction will be able to start immediately after the international ITER organisation is established, following signature of the JIA. The Project is strongly supported by the governments of the Participants as well as by the scientific community. The real negotiations, including siting and the final details of cost sharing, started in December 2003. The EU, with Cadarache, and Japan, with Rokkasho, have both promised large contributions to the project to strongly support their construction site proposals. Their wish to host ITER construction is too strong to allow convergence to a single site considering the ITER device in isolation. A broader collaboration among the Parties is therefore being contemplated, covering complementary activities to help accelerate fusion development towards a viable power source, and allow the Participants to reach a conclusion on ITER siting. This report reviews these preparations, and the status of negotiations

  18. Passive solar construction handbook

    Energy Technology Data Exchange (ETDEWEB)

    Levy, E.; Evans, D.; Gardstein, C.

    1981-08-01

    Many of the basic elements of passive solar design are reviewed. The unique design constraints presented in passive homes are introduced and many of the salient issues influencing design decisions are described briefly. Passive solar construction is described for each passive system type: direct gain, thermal storage wall, attached sunspace, thermal storage roof, and convective loop. For each system type, important design and construction issues are discussed and case studies illustrating designed and built examples of the system type are presented. Construction details are given and construction and thermal performance information is given for the materials used in collector components, storage components, and control components. Included are glazing materials, framing systems, caulking and sealants, concrete masonry, concrete, brick, shading, reflectors, and insulators. The Load Collector Ratio method for estimating passive system performance is appended, and other analysis methods are briefly summarized. (LEW)

  19. Ship construction and welding

    CERN Document Server

    Mandal, Nisith R

    2017-01-01

    This book addresses various aspects of ship construction, from ship types and construction materials, to welding technologies and accuracy control. The contents of the book are logically organized and divided into twenty-one chapters. The book covers structural arrangement with longitudinal and transverse framing systems based on the service load, and explains basic structural elements like hatch side girders, hatch end beams, stringers, etc. along with structural subassemblies like floors, bulkheads, inner bottom, decks and shells. It presents in detail double bottom construction, wing tanks & duct keels, fore & aft end structures, etc., together with necessary illustrations. The midship sections of various ship types are introduced, together with structural continuity and alignment in ship structures. With regard to construction materials, the book discusses steel, aluminum alloys and fiber reinforced composites. Various methods of steel material preparation are discussed, and plate cutting and form...

  20. ATLAS construction status

    International Nuclear Information System (INIS)

    Jenni, P.

    2006-01-01

    The ATLAS detector is being constructed at the LHC, in view of a data-taking startup in 2007. This report concentrates on the progress and the technical challenges of the detector construction, and summarizes the status of the work as of August 2004. The project is on track to allow the highly motivated ATLAS Collaboration to enter into a new exploratory domain of high-energy physics in 2007. (author)

  1. Quality during construction

    International Nuclear Information System (INIS)

    Rogers, C.B.

    1977-01-01

    This paper outlines the quality assurance program used by Bechtel Corp. in constructing Nuclear Power Plants. As a tool for scheduling and visualizing situations during construction, power plant scale models are used. The use of models, preplanning, detail scheduling, and early development of procedures and inspection plans, have all contributed to a lower cost integrated quality program. Quality control and quality assurance are built in, thus satisfying the regulatory requirements

  2. Construction and Demolition Waste

    DEFF Research Database (Denmark)

    Christensen, Thomas Højlund; Andersen, L.

    2011-01-01

    Construction and demolition waste (C&D waste) is the waste generated during the building, repair, remodeling or removal of constructions. The constructions can be roads, residential housing and nonresidential buildings. C&D waste has traditionally been considered without any environmental problems...... should be managed accordingly. Another reason is that it has been documented that a large fraction of C&D waste (about 90 %) can be easily recycled and thus can conserve landfill capacity. C&D waste may conveniently be divided into three subcategories: Buildings, roads and excavations. This chapter...

  3. 7 CFR 3560.71 - Construction financing.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 15 2010-01-01 2010-01-01 false Construction financing. 3560.71 Section 3560.71... Construction financing. (a) Construction financing plan. Prior to loan approval, applicants must submit to the Agency for its concurrence a plan for the construction financing and securing of the loan. (b) Interim...

  4. 45 CFR 1151.23 - New construction.

    Science.gov (United States)

    2010-10-01

    ... 45 Public Welfare 3 2010-10-01 2010-10-01 false New construction. 1151.23 Section 1151.23 Public... Prohibited Accessibility § 1151.23 New construction. (a) Design, construction, and alteration. New facilities... Accessibility Standards. (1) Effective as of January 18, 1991, design, construction, or alteration of buildings...

  5. Workshop presentation: research guidelines for Construction Management

    OpenAIRE

    Marco Alvise Bragadin

    2013-01-01

    Nowadays the European economic system challenges the construction sector to take part to industrial recovery of western countries. In co-operation with the Construction Production research group of the Tampere University of of research about construction management tools and methods were detected. Research guidelines: 1) Construction management: tools and methods to manage construction projects 2) environmental impact of construction projects 3) construction management and safety 4) project p...

  6. Solid construction waste management in large civil construction companies through use of specific software - case study

    Directory of Open Access Journals (Sweden)

    Caio Dalla Zanna

    2017-05-01

    Full Text Available In the current construction market there is a high demand for sustainability. In addition to that the Brazilian government is enacting tougher and tougher legislation on the disposal of solid construction waste. These demands increasingly make the construction company responsible for the entire lifecycle of its waste as well as the accompanying cost and environmental impact of solid waste. A software program was used in the research which allows construction companies gather information about waste. This helps the decision makers, at all different levels of the company improving waste management through better decisions. The software program was used during the construction of two residential buildings, constructed by a large construction company in the South of Brazil. Five key performance indicators were used by the construction company team: Generated Waste Height (cm, cost per built area (R$ m-², Waste Segregation Quality Index (WSQI, Effective Waste Management Index (EWMI and Waste Management Quality Index (WMQI. After four months the total cost of waste management was R$ 83,551.71 for site A and R$ 91,668.02 for site B. About 70% of the waste was raw material waste. The software program provided information not previously available, which made it possible to calculate the cost of material loss, indicating corrective actions, all without losing sight of cost reduction opportunities for the management of Solid construction Waste (SCW.

  7. Experimental studies of Steel Corrugated Constructions

    Directory of Open Access Journals (Sweden)

    Lazarev Yuriy

    2016-01-01

    Full Text Available The purpose of this particular article is to assess existing calculations of steel corrugated constructions. Steel Corrugated Construction is a perspective type of constructions, which is exhibiting numerous advantages in comparison with one that currently applied in automobile and railroad networks (reinforced concrete water-throughput pipes, reinforced concrete frame bridges. The evaluation of experimental data on models of constructions of this particular type has been carried out in order to improve calculations of Steel Corrugated Constructions.

  8. SYSTEM OF STANDARTIZATION OF CONSTRUCTION OPERATIONS ARRANGEMENT

    Directory of Open Access Journals (Sweden)

    Oleynik Pavel Pavlovich

    2012-10-01

    Full Text Available In the proposed article, management of construction operations is represented as a multi-level system; it is considered with the framework of projects including new construction, restructuring and overhaul of buildings and structures. The system of management of construction operations is to be composed of the following three constituent parts. They include a construction and assembling entity, project and operations, and a procurement base. Such matters as the quality of construction products, purchase (lease of building machinery and vehicles are incorporated into the level of the construction and assembling entity. The project level comprises such components of construction operations management as pre-construction preparation of a project, methods and forms of construction management, preparatory works, management of construction activities, real-time operations control, construction quality control, etc. The level of operations and the procurement base covers the needs for materials and equipment, their purchase and procurement, as well as the warehouse management. The main elements of the standardization system are identified. Standards of construction operations management are explained, including 1. General Provisions; 2. Preparation and performance of construction and assembling works; 3. New construction. Building site organization; 4. Demolition (dismantling of buildings and structures; 5. Rules of preparation for acceptance and commissioning of completed residential buildings. The prospects for the further development of the system of standardization of construction operations management are outlined

  9. Construction technique for a chemical plant (II)

    International Nuclear Information System (INIS)

    1978-08-01

    This book deals with design and construction for a chemical plant which includes design and building of steel structure for a chemical plant with types, basic regulation, plan, shop fabrication for steel structure and field construction. It explains design and construction of making building for a chemical construction with measurement, types of building and basic rule of the building, design of the building, constructing plumbing for a chemical plant with plan, management of material, checking for construction, construction of electrical installation on plan, know-how to construction and maintenance.

  10. INDOT Construction Inspection Priorities

    Science.gov (United States)

    2012-05-01

    In the last decade, the Indiana Department of Transportation (INDOT) has experienced an increase in their construction projects (e.g., INDOTs : construction spending was $789 million in 2006 and increased to $1,081.4 million in 2010); while the le...

  11. 23 CFR 772.19 - Construction noise.

    Science.gov (United States)

    2010-04-01

    ... 23 Highways 1 2010-04-01 2010-04-01 false Construction noise. 772.19 Section 772.19 Highways... ABATEMENT OF HIGHWAY TRAFFIC NOISE AND CONSTRUCTION NOISE § 772.19 Construction noise. The following general... may be affected by noise from construction of the project. The identification is to be performed...

  12. 48 CFR 522.804-2 - Construction.

    Science.gov (United States)

    2010-10-01

    ... 48 Federal Acquisition Regulations System 4 2010-10-01 2010-10-01 false Construction. 522.804-2... Construction. Goals for the employment of minorities and women in the construction industry are established by... Construction Contractors.” This guide can be accessed at http://www.dol.gov/esa/ofccp/TAguides/ctaguide.htm...

  13. 14 CFR 1251.302 - New construction.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 5 2010-01-01 2010-01-01 false New construction. 1251.302 Section 1251.302... Accessibility § 1251.302 New construction. (a) Design and construction. Each facility or part of a facility..., if the construction (ground breaking) was commenced after the effective date of this part. (b...

  14. 34 CFR 104.23 - New construction.

    Science.gov (United States)

    2010-07-01

    ... 34 Education 1 2010-07-01 2010-07-01 false New construction. 104.23 Section 104.23 Education... Accessibility § 104.23 New construction. (a) Design and construction. Each facility or part of a facility..., if the construction was commenced after the effective date of this part. (b) Alteration. Each...

  15. 46 CFR 167.20-1 - Construction.

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 7 2010-10-01 2010-10-01 false Construction. 167.20-1 Section 167.20-1 Shipping COAST... Requirements, Construction and Arrangement of Nautical School Ships § 167.20-1 Construction. Except as otherwise provided by law or regulations in this subpart, the following standards for construction are...

  16. 46 CFR 72.20-15 - Construction.

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 3 2010-10-01 2010-10-01 false Construction. 72.20-15 Section 72.20-15 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) PASSENGER VESSELS CONSTRUCTION AND ARRANGEMENT Accommodations for Officers and Crew § 72.20-15 Construction. All crew spaces are to be constructed and arranged...

  17. 45 CFR 605.23 - New construction.

    Science.gov (United States)

    2010-10-01

    ... 45 Public Welfare 3 2010-10-01 2010-10-01 false New construction. 605.23 Section 605.23 Public... Accessibility § 605.23 New construction. (a) Design and construction. Each facility or part of a facility... persons, if the construction was commenced after the effective date of this part. (b) Alteration. Each...

  18. 40 CFR 7.70 - New construction.

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 1 2010-07-01 2010-07-01 false New construction. 7.70 Section 7.70... of Handicap § 7.70 New construction. (a) General. New facilities shall be designed and constructed to... 18, 1991, design, construction, or alteration of buildings in conformance with sections 3-8 of the...

  19. 22 CFR 142.17 - New construction.

    Science.gov (United States)

    2010-04-01

    ... 22 Foreign Relations 1 2010-04-01 2010-04-01 false New construction. 142.17 Section 142.17 Foreign... ACTIVITIES RECEIVING FEDERAL FINANCIAL ASSISTANCE Accessibility § 142.17 New construction. (a) Design and construction. Each facility or part of a facility constructed by, on behalf of, or for the use of a recipient...

  20. 22 CFR 217.23 - New construction.

    Science.gov (United States)

    2010-04-01

    ... 22 Foreign Relations 1 2010-04-01 2010-04-01 false New construction. 217.23 Section 217.23 Foreign... ACTIVITIES RECEIVING FEDERAL FINANCIAL ASSISTANCE Accessibility § 217.23 New construction. (a) Design and construction. Each facility or part of a facility constructed by, on behalf of, or for the use of a recipient...

  1. Advanced design and construction technology for ABWR

    International Nuclear Information System (INIS)

    Kawahara, Akira

    2003-01-01

    Recently, many countries start planning to construct nuclear plants, and the electric power companies and the plant suppliers are acutely aware of the importance of the technical infrastructure required for construction planning and execution as this has a significant influence on construction costs. Plant suppliers in Japan have been focusing its attention on the efficiency of construction from earlier, because of its significant role in determining overall construction costs. Through continuous efforts to reduce fieldwork costs, we have developed unique technologies, especially the 3D-CAD system and other advanced construction technologies including modularization. We, plant suppliers are now turning its attention to overseas nuclear plants construction also, and are developing more rational, economical, and global construction based on its vast experience in construction techniques. In this report, the evolution of plant engineering methods and construction technologies, the present level of progress in construction, and technical developments for the future, are described. (author)

  2. Constructing leadership identities through stories

    DEFF Research Database (Denmark)

    Frimann, Søren; Hersted, Lone

    2016-01-01

    This article analyzes the construction of leadership identities through stories found in four narrative interviews from a qualitative study and leadership development project based on social constructionism and action learning. We argue that leadership development and the construction of leadership...... that the concept of coauthoring is useful in developing leadership and leadership identities through reflexive dialogs and emerging stories....... identities in a postmodern paradigm are based on the negotiation and co-construction of meanings, relationships, and stories. The following questions are investigated: What happens when a group of leaders from different organizations construct, deconstruct, and reconstruct their identity as leaders through...

  3. NPP construction cost in Canada

    International Nuclear Information System (INIS)

    Gorshkov, A.L.

    1988-01-01

    The structure of capital costs during NPP construction in Canada is considered. Capital costs comprise direct costs (cost of the ground and ground rights, infrastructure, reactor equipment, turbogenerators, electrotechnical equipment, auxiliary equipment), indirect costs (construction equipment and services, engineering works and management services, insurance payments, freight, training, operating expenditures), capital per cents for the period of construction and cost of heavy water storages. It proceeds from the analysis of the construction cost structure for a NPP with the CANDU reactor of unit power of 515, 740 and 880 MW, that direct costs make up on the average 62%

  4. Apparel Research Network (ARN) Apparel Order Processing Module (AOPM). Application Program for Management of Special Measurement Clothing Orders

    National Research Council Canada - National Science Library

    Brekhus, Dennis

    1997-01-01

    ..., to the defense apparel manufacturers. The Apparel Order Processing Module (AOPM) is designed to respond to the critical need for an ability to order clothing expeditiously for military recruits and for other military personnel...

  5. Multicolour synthesis in lanthanide-doped nanocrystals through cation exchange in water

    KAUST Repository

    Han, Sanyang; Qin, Xian; An, Zhongfu; Zhu, Yihan; Liang, Liangliang; Han, Yu; Huang, Wei; Liu, Xiaogang

    2016-01-01

    lanthanide-doped luminescent nanomaterials have relied on direct synthesis requiring stringent controls over crystal nucleation and growth at elevated temperatures. Here we demonstrate the use of a cation exchange strategy for expeditiously accessing large

  6. Development and Validation of Reentry Simulation Using MATLAB

    National Research Council Canada - National Science Library

    Jameson, Jr, Robert E

    2006-01-01

    This research effort develops a program using MATLAB to solve the equations of motion for atmospheric reentry and analyzes the validity of the program for use as a tool to expeditiously predict reentry profiles...

  7. 42 CFR 137.275 - May Self-Governance Tribes include IHS construction programs in a construction project agreement...

    Science.gov (United States)

    2010-10-01

    ... 42 Public Health 1 2010-10-01 2010-10-01 false May Self-Governance Tribes include IHS construction... OF HEALTH AND HUMAN SERVICES TRIBAL SELF-GOVERNANCE Construction Purpose and Scope § 137.275 May Self-Governance Tribes include IHS construction programs in a construction project agreement or in a funding...

  8. Reliability of mobile systems in construction

    Science.gov (United States)

    Narezhnaya, Tamara; Prykina, Larisa

    2017-10-01

    The purpose of the article is to analyze the influence of the mobility of construction production in the article taking into account the properties of reliability and readiness. Basing on the studied systems the effectiveness and efficiency is estimated. The construction system is considered to be the complete organizational structure providing creation or updating of construction facilities. At the same time the production sphere of these systems joins the production on the building site itself, material and technical resources of the construction production and live labour in these spheres within the construction dynamics. The author concludes, that the estimation of the degree of mobility of systems the of construction production makes a great positive effect in the project.

  9. CRITICAL EVENTS IN CONSTRUCTION PROCESS

    DEFF Research Database (Denmark)

    Jørgensen, Kirsten; Rasmussen, Grane Mikael Gregaard

    2009-01-01

    cause-effects of failures and defects in the construction industry by using an analytical approach (The bowtie model) which is developed in the accident research. Using this model clarifies the relationships within the chain of failures that causes critical events with undesirable consequences......Function failures, defects and poor communication are major problems in the construction industry. These failures and defects are caused by a row of critical events in the construction process. The purpose of this paper is to define “critical events” in the construction process and to investigate....... In this way the causes of failures and the relationships between various failures are rendered visible. A large construction site was observed from start to finish as the empirical element in the research. The research focuses on all kinds of critical events identified throughout every phase during...

  10. Air Force construction automation/robotics

    Science.gov (United States)

    Nease, AL; Dusseault, Christopher

    1994-01-01

    The Air Force has several unique requirements that are being met through the development of construction robotic technology. The missions associated with these requirements place construction/repair equipment operators in potentially harmful situations. Additionally, force reductions require that human resources be leveraged to the maximum extent possible and that more stringent construction repair requirements push for increased automation. To solve these problems, the U.S. Air Force is undertaking a research and development effort at Tyndall AFB, FL to develop robotic teleoperation, telerobotics, robotic vehicle communications, automated damage assessment, vehicle navigation, mission/vehicle task control architecture, and associated computing environment. The ultimate goal is the fielding of robotic repair capability operating at the level of supervised autonomy. The authors of this paper will discuss current and planned efforts in construction/repair, explosive ordnance disposal, hazardous waste cleanup, fire fighting, and space construction.

  11. A Construction Management Framework for Mass Customisation in Traditional Construction

    Directory of Open Access Journals (Sweden)

    María Dolores Andújar-Montoya

    2015-04-01

    Full Text Available A Mass Customisation model is discussed as a competitive positioning strategy in the marketplace adding value to the customer’s end-use. It includes the user as part of the construction process responding to the customer’s demands and wishes. To the present day, almost all proposals for Mass Customisation have been focused on the design phase and single family houses. The reality is that the processes carried out in the work execution are so inefficient that the costs of the Mass Customisation models are assumed by the customer and they do not offer solutions that support the change management. Furthermore, this inefficiency often makes Mass Customisation unfeasible in terms of deadlines and site management. Therefore, the present proposal focuses on achieving the paradigm of Mass Customisation in the traditional residential construction complementary to the existing proposals in the design phase. All this through the proposal of a framework for the integral management in the work execution, which will address change management introduced by the users offering an efficient and productive model that reduces costs in the process. This model will focus on the synergy between different strategies, techniques and technologies currently used in the construction management (such as Lean Construction or Six Sigma, together with, other strategies and technologies that have proven to be valid solutions in other fields (such as Business Process Management, Service Oriented Architecture, etc..

  12. Alternative constructive methods for construction and assembly of ducts in flooded areas

    Energy Technology Data Exchange (ETDEWEB)

    Machado, Otto L.M.; Gomes, Antonio E.; Loureiro, Mauro O. [Petroleo do Brasil S.A. (PETROBRAS), Rio de Janeiro, RJ (Brazil)

    2009-07-01

    The challenge of constructing the gas pipeline Urucu-Coari-Manaus, which has 662 kilometers of extension, from the Base of Operations Geologist Peter de Moura, in Urucu, to the Isaac Sabba Refinery - REMAN, in the city of Manaus, challenged PETROBRAS to search for innovative solutions in the construction of terrestrial ducts in Brazil. The introduction of these solutions was made necessary in view of, mainly, great difficulties of logistic imposed by the Amazonian forest, place where the enterprise in question was implemented. Of the new used techniques, the air transportation of pipes by cargo helicopters, the assembly of columns on pontoon ferries, opening ditches using excavators placed on 'H' shaped pontoon ferries and welding tie-in joints on a system of floating porches (pontoon ferries), must be emphasized. This work will be dedicated specifically to non-conventional constructive methods employed to overcome the construction difficulties due to the instability of the ground of flooded areas in the Amazonian forest, which during 6 (six) months of the year are total and/or partially submerged. (author)

  13. Industrialization for sustainable construction?

    NARCIS (Netherlands)

    Egmond - de Wilde De Ligny, van E.L.C.; Barrett, P; Amaratunga, D.; Haigh, R; Keraminiyage, K.; Pathirage, C

    2010-01-01

    Sustainable construction (SuCo), which genesis dates in the early 1990’s, advocates the creation and operation of a quality and healthy built environment based on resource efficiency, life cycle economics and ecological principles. (Kibert, 2003). Currently the Construction Industry does not meet

  14. Constructibility assessment of APR1400

    International Nuclear Information System (INIS)

    Cho, Sung Jae; Kang, Yong Chul; Lee, Jae Gon; Lim, Woo Sang

    2003-01-01

    APR1400 (formerly KNGR) development is one of national G-7 projects sponsored by government and KHNP (Korea Hydro and Nuclear Power Co., LTD). It is an evolutionary standard reactor with the thermal output of 4000MWt and has been adopted for Shin-Kori Unit 3 and 4. The government organizations, research institutes, universities and industries have participated in the project since 1992 along with KHNP, and the standard design certification program was issued in May 2002. The project set up the top-tier requirements about the safety, economy, operability and maintainability, and constructibility in the early design stage. The requirements have been evaluated periodically during the design process, and the results were reflected to the design. This paper describes the methods for constructibility enhancement and the results of schedule analysis to assure meeting construction duration target, which is set to 48 months from the first concrete pouring to the commercial operation on the condition that learning effects are maximized at Nth plant. To meet the target schedule, the design characteristics and constructibility studies such as new construction methods and construction schedule analysis were performed. The new construction methods presented here are over the top method for NSSS components, deck plate and steel from for concrete wall and slab, automatic welding for large bore piping, and modularization of components and structure, etc. (author)

  15. Collapse simulation of building constructions

    Directory of Open Access Journals (Sweden)

    Nekrest'yanov Viktor Nikolaevich

    Full Text Available The physical reasons for building structures destruction are both the forces arising at stress-strain state of construction elements and external influences arising at emergency situations, as well as their moments, impulses and periodic impulses with the frequencies close to of fluctuations frequencies of construction elements. We shall call the mathematical calculation models for the parameters-reasons of destructions the basic models. The basic models of destruction of building structures elements allow not only providing necessary level of reliability and survivability of the elements and the construction as a whole already at the stage of their design, but also giving the chance, at their corresponding completion, to provide rational decisions on the general need of recovery works and their volume depending on destruction level. Especially important for rational design decisions development, which ensure the demanded constructional safety of building structures, is library creation of the basic mathematical models of standard processes of bearing elements destructions for standard construction designs for the purpose of the further forecast (assessment of the level and probabilities of standard destructions. Some basic mathematical models of destructions processes of the standard elements of building structures are presented in the present article. A model of accounting for construction defects and a model of obtaining requirements to probabilities of partial destructions of a construction are given. Both of these models are probabilistic.

  16. PIK reactor construction status

    International Nuclear Information System (INIS)

    Konoplev, K.A.; Smolsky, S.L.

    2001-01-01

    The 100MW reactor PIK for fundamental researches has a thermal neutron flux of more than 10 15 n/cm 2 sec. This presentation outlines the construction state as of 2001, its prospects and completion tactics in the conditions of unstable finance. Construction of the reactor started in 1976. In 1986 construction of the building was completed and significant part of the installation work fulfilled. Construction of cooling systems was finished, the control panel assembled, and adjustment of the pump and gate valve control circuits started. After Chernobyl catastrophe, the USSR nuclear reactor safety requirements were revised. The PIK design did not meet these requirements and underwent considerable revision. The reconstruction design resulted in double the initial cost. Creation of the containment was the bulkiest part of the reconstruction. It brought about the need to disassemble the roofing of the building, dismantle all the equipment of the two upper floors, and lay up the equipment of the lower floors. As of 2001, construction in accordance with the revised design is at the stage of assemblage of the most important units, i.e. reactor itself, cooling system, heavy water system, and a number of auxiliary systems, such as depleted fuel storage, emergency cooling system etc. (orig.)

  17. AP1000 design and construction integration

    International Nuclear Information System (INIS)

    Winters, James W.; Clelland, Jill A.

    2004-01-01

    Construction costs of commercial nuclear generating plants must be reduced in order to expand the future use of nuclear energy. Two of the drivers of plant construction costs are the cost of financing during the construction duration and the substantial amount of skilled craft labor hours needed on site during construction. The application of information technology (IT) has been used to understand and reduce both of these drivers by establishing parallel construction paths using modules and integrating construction sequence review into the design process. In a program sponsored by EPRI, Westinghouse has modeled the construction of AP1000 in '4D' to show its viability, to improve its logic, to improve the plant design for constructibility and overall to reduce time and risk in the construction schedule. The design of most of AP1000 was constrained to be a duplicate of AP600 except where components required expansion for the higher power level. As a result, the construction schedule for AP1000 is as mature and as robust as that for AP600. Two areas important to the construction of AP1000 did require some design work because they could not remain the same as AP1000. First, the turbine building had to be redesigned to accommodate the larger turbine and its support systems. Again, as much of the AP600 design and philosophy as possible was retained. The building required enlargement and the basemat, foundations, steel structure and structural modules required modification. As concrete, steel, and equipment were defined by the designers, they were matched to the original AP600 turbine building schedule. This forced designers to assemble files to be consistent with building assembly activities and to think about constructibility as they defined the final design. Second, the reinforcement structure within the concrete under and supporting the containment vessel required detail design. Westinghouse was fortunate to have the constructor Obayashi of Japan recommend a detailed

  18. Solid construction waste management in large civil construction companies through use of specific software - case study

    OpenAIRE

    Caio Dalla Zanna; Fernando Fernandes; José Carlos Gasparine

    2017-01-01

    In the current construction market there is a high demand for sustainability. In addition to that the Brazilian government is enacting tougher and tougher legislation on the disposal of solid construction waste. These demands increasingly make the construction company responsible for the entire lifecycle of its waste as well as the accompanying cost and environmental impact of solid waste. A software program was used in the research which allows construction companies gather information about...

  19. ISO in the Construction and Manufacturing Companies: A Case Study from the Construction Industry of Hyderabad and Karachi, Pakistan

    Directory of Open Access Journals (Sweden)

    Nafees Ahmed Memon

    2011-04-01

    Full Text Available Construction industry plays very important role in development of any country. The development of construction industry depends to a larger extent on quality of construction productions and projects. Quality of construction productions and projects is linked with the implementation of QMS (Quality Management System in construction organizations. ISO certification is one of the QMS which has been adopted in manufacturing and construction industry at the global level. The construction companies of developing countries have reaped many advantages from the effective implementation of ISO standards. The rate of adoption of ISO standards has remained slow in the construction sector of some developing countries like Pakistan. This paper presents the literature review of ISO in global construction industry. It highlights the advantages, disadvantages and barriers faced by construction companies in the implementation of ISO standards. This study also investigates the level of adoption of ISO standards in construction and manufacturing companies of Pakistan through a questionnaire survey. It presents the comparison of ISO standards\\\\\\' adoption in both construction and manufacturing sectors. The paper puts forward some suggestions and recommendation for the better adoption and improvement of ISO implementation in the construction sector of Pakistan. This study emphasizes that construction companies of Pakistan should learn from the benefits reaped by the construction companies of developed countries and take appropriate measures for implementing ISO standards. It also suggests that public sector clients should make it obligatory for the contractors and consultants to have ISO certification before awarding the works in order to enhance the the adoption of ISO standards in construction sector.

  20. Human Factors Simulation in Construction Management Education

    Science.gov (United States)

    Jaeger, M.; Adair, D.

    2010-01-01

    Successful construction management depends primarily on the representatives of the involved construction project parties. In addition to effective application of construction management tools and concepts, human factors impact significantly on the processes of any construction management endeavour. How can human factors in construction management…

  1. Constructional and Conceptual Composition

    Science.gov (United States)

    Dodge, Ellen Kirsten

    2010-01-01

    Goldberg's (1995) recognition that, in addition to various word-level constructions, sentences also instantiate meaningful argument structure constructions enables a non-polysemy-based analysis of various verb 'alternations' (Levin 1993). In such an analysis, meaning variations associated with the use of the same verb in different argument…

  2. BUDGET NORMALIZATION AND PRICING FEATURES IN CONSTRUCTION

    Directory of Open Access Journals (Sweden)

    M. I. Gadzhieva

    2016-01-01

    Full Text Available It is proved that the pricing of the construction is different from the pricing system in the industry and other branches of economy, because it has different methodological and organizational approaches. It has been determined that the cost of construction is set on the stage of its design, in the process of concluding investment contracts (construction contracts, as well as directly during construction, major repairs of objects of capital construction, reconstruction and the implementation of certain types of construction and installation works. It has been found that the pricing mechanism in construction is based on the detailed legal and reference documents regulating material consumption rates and prices, taking into account sectoral, territorial and seasonal features of building production. It has been found that under inflation conditions the price index calculation of construction products for investment purposes is of great importance. Mandatory approval of all stakeholders of the construction production method for determining the price of the construction site is proposed.

  3. Combinatorial designs constructions and analysis

    CERN Document Server

    Stinson, Douglas R

    2004-01-01

    Created to teach students many of the most important techniques used for constructing combinatorial designs, this is an ideal textbook for advanced undergraduate and graduate courses in combinatorial design theory. The text features clear explanations of basic designs, such as Steiner and Kirkman triple systems, mutual orthogonal Latin squares, finite projective and affine planes, and Steiner quadruple systems. In these settings, the student will master various construction techniques, both classic and modern, and will be well-prepared to construct a vast array of combinatorial designs. Design theory offers a progressive approach to the subject, with carefully ordered results. It begins with simple constructions that gradually increase in complexity. Each design has a construction that contains new ideas or that reinforces and builds upon similar ideas previously introduced. A new text/reference covering all apsects of modern combinatorial design theory. Graduates and professionals in computer science, applie...

  4. 12 CFR 908.60 - Conduct of hearings.

    Science.gov (United States)

    2010-01-01

    ... to provide a fair and expeditious presentation of the relevant disputed issues. Except as limited by... may agree among themselves as to their order or presentation of their cases, but if they do not agree...

  5. 12 CFR 19.35 - Conduct of hearings.

    Science.gov (United States)

    2010-01-01

    ... be conducted so as to provide a fair and expeditious presentation of the relevant disputed issues... themselves as to their order of presentation of their cases, but if they do not agree, the administrative law...

  6. Strategy to Enhance International Supply Chain Security

    National Research Council Canada - National Science Library

    2007-01-01

    .... at 1901, 1903, October 13, 2006) which require the development of a strategic plan to enhance the security of the international supply chain, including protocols for the expeditious resumption of the flow of trade following...

  7. 20 CFR 655.430 - Service and computation of time.

    Science.gov (United States)

    2010-04-01

    ... EMPLOYMENT OF FOREIGN WORKERS IN THE UNITED STATES Enforcement of H-1A Attestations § 655.430 Service and... authorized where service is by mail. In the interest of expeditious proceedings, the administrative law judge...

  8. Constructive Preference Elicitation

    Directory of Open Access Journals (Sweden)

    Paolo Dragone

    2018-01-01

    Full Text Available When faced with large or complex decision problems, human decision makers (DM can make costly mistakes, due to inherent limitations of their memory, attention, and knowledge. Preference elicitation tools assist the decision maker in overcoming these limitations. They do so by interactively learning the DM’s preferences through appropriately chosen queries and suggesting high-quality outcomes based on the preference estimates. Most state-of-the-art techniques, however, fail in constructive settings, where the goal is to synthesize a custom or entirely novel configuration rather than choosing the best option among a given set of candidates. Many wide-spread problems are constructive in nature: customizing composite goods such as cars and computers, bundling products, recommending touristic travel plans, designing apartments, buildings, or urban layouts, etc. In these settings, the full set of outcomes is humongous and can not be explicitly enumerated, and the solution must be synthesized via constrained optimization. In this article, we describe recent approaches especially designed for constructive problems, outlining the underlying ideas and their differences as well as their limitations. In presenting them, we especially focus on novel issues that the constructive setting brings forth, such as how to deal with sparsity of the DM’s preferences, how to properly frame the interaction, and how to achieve efficient synthesis of custom instances.

  9. Appendix VI: KHNP staffing plan of construction site office: ULCHIN 5 and 6 construction project (ROK)

    International Nuclear Information System (INIS)

    2008-01-01

    KHNP, as an owner/operator organization, is responsible for all project activities including design, procurement, construction, and commissioning, for Korea's nuclear power plant (NPP) construction projects. Four separate functional offices of KHNP are set up to complete the construction management work. These offices are (1) home office, (2) field construction office, (3) field quality assurance office, and (4) field startup/commissioning office. This paper presents a staffing plan for the field construction office starting initial project implementation to final turnover to operations stages. It is recognized that the plan may not be applicable to other utility situations in terms of project management of site activity depending upon how the overall project contract is structured

  10. Construction accidents: identification of the main associations between causes, mechanisms and stages of the construction process.

    Science.gov (United States)

    Carrillo-Castrillo, Jesús A; Trillo-Cabello, Antonio F; Rubio-Romero, Juan C

    2017-06-01

    To identify the most frequent causes of accidents in the construction sector in order to help safety practitioners in the task of prioritizing preventive actions depending on the stage of construction. Official accident investigation reports are analysed. A causation pattern is identified with the proportion of causes in each of the different possible groups of causes. Significant associations of the types of causes with accident mechanisms and construction stages have been identified. Significant differences have been found in accident causation depending on the mechanism of the accident and the construction stage ongoing. These results should be used to prioritize preventive actions to combat the most likely causes for each accident mechanism and construction stage.

  11. 46 CFR 151.10-20 - Hull construction.

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 5 2010-10-01 2010-10-01 false Hull construction. 151.10-20 Section 151.10-20 Shipping... BULK LIQUID HAZARDOUS MATERIAL CARGOES Barge Hull Construction Requirements § 151.10-20 Hull construction. (a) Construction features. (1) Each barge hull shall be constructed with a suitable bow form...

  12. Safety in construction industry - overview

    International Nuclear Information System (INIS)

    Chockalingam, S.; Nehru, R.M.; Ramprasad, K.; Sonawane, A.U.

    2016-01-01

    The construction industry plays an important role in the social and economic development in a country. Safety in the construction industry is considered a major issue in developed and developing countries. In urban sector of India increasing numbers of workers have taken up construction work as a means of immediate employment, which provides cash earnings at the end of the day. Being as unorganized sector, the fatal injuries in DAE unit for the construction industry (Nuclear Power Project including BHAVINI: 62.7% from 1999 to 2014) is higher than the category for all other units (UCIL:13.3%; ECIL:6.7%; NFC and ZC: 4%; HWP: 2.7%; IREL:2.7%; Nuclear Power Plant: 2.7% etc., from 1999 to 2014). A variety hazards exist in the construction site. The best way to protect workers against workers against hazards is to control problems at the source. The problem regarding construction industry is not that the hazards and risks are unknown, but it very difficult to accurately identify in a constantly changing work environment. To prevent hazards at work, all possible hazards that may be encountered should be identified in advance through Job Hazard Analysis (JHA). The present scenario has deduced a fact that efficient Safety Management Techniques (SMT) are (essential for today's construction companies and adaptation of legal requirements including regulatory requirements and proactive safety management techniques will help organizations in providing a better workplace to its employees and reduce the accidents. (author)

  13. Constructing Student Problems in Phylogenetic Tree Construction.

    Science.gov (United States)

    Brewer, Steven D.

    Evolution is often equated with natural selection and is taught from a primarily functional perspective while comparative and historical approaches, which are critical for developing an appreciation of the power of evolutionary theory, are often neglected. This report describes a study of expert problem-solving in phylogenetic tree construction.…

  14. Passive-solar construction handbook

    Energy Technology Data Exchange (ETDEWEB)

    Levy, E.; Evans, D.; Gardstein, C.

    1981-02-01

    Many of the basic elements of passive solar design are reviewed. Passive solar construction is covered according to system type, each system type discussion including a general discussion of the important design and construction issues which apply to the particular system and case studies illustrating designed and built examples of the system type. The three basic types of passive solar systems discussed are direct gain, thermal storage wall, and attached sunspace. Thermal performance and construction information is presented for typical materials used in passive solar collector components, storage components, and control components. Appended are an overview of analysis methods and a technique for estimating performance. (LEW)

  15. Sustainability Base Construction Update

    Science.gov (United States)

    Mewhinney, Michael

    2012-01-01

    Construction of the new Sustainability Base Collaborative support facility, expected to become the highest performing building in the federal government continues at NASA's Ames Research Center, Moffet Field, Calif. The new building is designed to achieve a platinum rating under the leadership in Energy and Environment Design (LEED) new construction standards for environmentally sustainable construction developed by the U. S. Green Building Council, Washington, D. C. When completed by the end of 2011, the $20.6 million building will feature near zero net energy consumption, use 90 percent less potable water than conventionally build buildings of equivalent size, and will result in reduced building maintenance costs.

  16. Contingency planning and emergency response in construction activities: Training the construction worker

    International Nuclear Information System (INIS)

    Jones, E.

    1987-01-01

    Construction activities have the potential for environmental and/or health impacts at Oak Ridge National Laboratory (ORNL) particularly as site cleanup and restoration plans are initiated. ORNL has instituted special training for all construction workers and related contractors. Individuals learn how construction activities at ORNL can potentially have adverse effects on the environment and their health, and to learn how to respond to potential chemical and radiation hazards. Workers are given a review of basic information on radiation and chemicals in a framework that emphasizes the situations in which workers or the environment may be exposed to potential risk. Specific instructions are presented on what to do when contamination is suspected, with identification of emergency procedures and response personnel. 5 refs., 1 fig

  17. Factors Influencing Tacit Knowledge in Construction

    Directory of Open Access Journals (Sweden)

    Jawahar Nesan

    2012-11-01

    Full Text Available Increased complexity of the construction business and consequentuse of new management concepts and technologies ledconstruction organisations to focus more on the transfer of explicitknowledge. However, it is the tacit knowledge that determinesthe construction companies’ competitiveness in a business thatis driven by turbulent market conditions and customers’ everincreasingdemands. This paper highlights the importance of tacitknowledge sharing in construction, explores the challenges andopportunities to efficiently share tacit knowledge, and based on theliterature review identifies some critical factors that influence tacitknowledge in construction. It is argued that employees’ knowledgesharing (learning behaviours are influenced by work practices thatare borne by respective organisational behaviours. Organisational,cultural, and project characteristics that facilitate knowledgesharing among construction employees are explored and thepractices that influence the construction employee behaviour insharing tacit knowledge are highlighted.

  18. ISO in the Construction and Manufacturing Companies: A Case Study from the Construction Industry of Hyderabad and Karachi, Pakistan

    OpenAIRE

    Nafees Ahmed Memon; Qazi Muhammad Moinuddin Abro; Zubair Ahmed Memon

    2011-01-01

    Construction industry plays very important role in development of any country. The development of construction industry depends to a larger extent on quality of construction productions and projects. Quality of construction productions and projects is linked with the implementation of QMS (Quality Management System) in construction organizations. ISO certification is one of the QMS which has been adopted in manufacturing and construction industry at the global level. The constr...

  19. Determination of brace forces caused by construction loads and wind loads during bridge construction.

    Science.gov (United States)

    2014-04-01

    The first objective of this study was to develop procedures for determining bracing forces during bridge construction. : Numerical finite element models and analysis techniques were developed for evaluating brace forces induced by construction loads ...

  20. Construction method for plant facility

    International Nuclear Information System (INIS)

    Ito, Arata; Hirono, Hideharu; Kyoda, Shigeru; Hanawa, Minoru; Sato, Hitoshi

    1998-01-01

    A caisson structure is disposed on a construction site for facilities of nuclear power plants. A digging work is performed below the caisson structure and, simultaneous with the digging work, a construction of a base, construction of plant facilities including a building and installation of plant facility are performed on the caisson structure. Then, the caisson structure is sank together with the structures on a base rock in association with the progress of the digging work and secured on the base rock. When securing them on the base rock, a groove is formed to the base rock along tuyere of the caisson structure so that the tuyere and a ceiling portion of the caisson structure are in direct contact with the base rock. Since the construction for the containing building conducted on the caisson structure is performed simultaneous with the digging work conducted below the caisson structure, the term required for the construction of the plant facilities can greatly reduced. (N.H.)

  1. Statics of historic masonry constructions

    CERN Document Server

    Como, Mario

    2016-01-01

    This successful book, which is now appearing in its second edition, presents a comprehensive new Statics of Masonry Constructions. Masonry constructions are the great majority of the buildings in Europe’s historic centres and the most important monuments in its architectural heritage. Given the age of these constructions, the demand for safety assessments and restoration projects is pressing and constant. The book you hold in hands contributes to fill this demand. The second edition integrates the original text of the first edition with new developments, widening and revisions, due to recent research studies achievements. The result is a book that gives a complete picture of the behaviour of the Masonry Constructions. First of all, it gives the fundamentals of its Statics, based on the no-tension assumption, and then it develops the Limit Analysis for the Masonry Constructions. In this framework, through an interdisciplinary approach combining Engineering and Architecture, the book also investigates the sta...

  2. Handbook of energy use for building construction

    Energy Technology Data Exchange (ETDEWEB)

    Stein, R.G.; Stein, C.; Buckley, M.; Green, M.

    1980-03-01

    The construction industry accounts for over 11.14% of the total energy consumed in the US annually. This represents the equivalent energy value of 1 1/4 billion barrels of oil. Within the construction industry, new building construction accounts for 5.19% of national annual energy consumption. The remaining 5.95% is distributed among new nonbuilding construction (highways, ralroads, dams, bridges, etc.), building maintenance construction, and nonbuilding maintenance construction. The handbook focuses on new building construction; however, some information for the other parts of the construction industry is also included. The handbook provides building designers with information to determine the energy required for buildings construction and evaluates the energy required for alternative materials, assemblies, and methods. The handbook is also applicable to large-scale planning and policy determination in that it provides the means to estimate the energy required to carry out major building programs.

  3. Handbook of energy use for building construction

    Science.gov (United States)

    Stein, R. G.; Stein, C.; Buckley, M.; Green, M.

    1980-03-01

    The construction industry accounts for over 11.14% of the total energy consumed in the US annually. This represents the equivalent energy value of 1 1/4 billion barrels of oil. Within the construction industry, new building construction accounts for 5.19% of national annual energy consumption. The remaining 5.95% is distributed among new nonbuilding construction (highways, railroads, dams, bridges, etc.), building maintenance construction, and nonbuilding maintenance construction. Emphasis is given to new building construction; however, some information for the other parts of the construction industry is also included. Building designers are provided with information to determine the energy required for buildings construction and to evaluate the energy required for alternative materials, assemblies, and methods. It is also applicable to large-scale planning and policy determination in that it provides the means to estimate the energy required to carry out major building programs.

  4. Study and Behaviour of Prefabricated Composite Cladding

    Science.gov (United States)

    Sai Avinash, P.; Thiagarajan, N.; Santhi, A. S.

    2017-07-01

    The incessant population rise entailed for an expeditious construction at competitive prices that steered the customary path to the light weight structural components. This lead to construction of structural components using ferrocement. The load bearing structural cladding, sizing 3200x900x100 mm, is chosen for the study, which, is analyzed using the software ABAQUS 6.14 in accordance with the IS:875-87 Part1, IS:875-87 Part2, ACI 549R-97, ACI 318R-08 and NZS:3101-06 Part1 standards. The Ferrocement claddings (FCs) are fabricated to a scaled dimension of 400x115x38 mm. The light weight-high strength phenomena are corroborated by incorporating Glass Fibre Reinforced Polymer Laminates (GFRPL) of thickness 6mm, engineered with the aid of hand layup (wet layup) technique wielding epoxy resin, followed by curing under room temperature. The epoxy resin is employed for fastening ferrocement cladding with the Glass fiber reinforced polymer laminate, with the contemporary methodology. The compressive load carrying capacity of the amalgamated assembly, both in presence and absence of Glass Fibre Reinforced polymer laminates (GFRPL) on either side of Ferrocement cladding, has been experimented.

  5. Magnetically Separable Fe3O4@DOPA-Pd: A Heterogeneous Catalyst for Aqueous Heck Reaction

    Science.gov (United States)

    Magnetically separable Fe3O4@DOPA-Pd catalyst has been synthesized via anchoring of palladium over dopamine-coated magnetite via non-covalent interaction and the catalyst is utilized for expeditious Heck coupling in aqueous media.

  6. 12 CFR 308.35 - Conduct of hearings.

    Science.gov (United States)

    2010-01-01

    ... rules. (1) Hearings shall be conducted so as to provide a fair and expeditious presentation of the..., respondents may agree among themselves as to their order of presentation of their cases, but if they do not...

  7. 12 CFR 747.35 - Conduct of hearings.

    Science.gov (United States)

    2010-01-01

    ... conducted so as to provide a fair and expeditious presentation of the relevant disputed issues. Each party... themselves as to their order of presentation of their cases, but if they do not agree the administrative law...

  8. Fulltext PDF

    Indian Academy of Sciences (India)

    Prakash

    Advances in sanitation and the discovery of antibiotics have given humanity a respite from ... diagnostic facilities, absence of vaccine, inadequate animal model and poorly ... The expeditious production of this volume was the result of generous ...

  9. 4D modeling in high-rise construction

    Science.gov (United States)

    Balakina, Anastasiya; Simankina, Tatyana; Lukinov, Vitaly

    2018-03-01

    High-rise construction is a complex construction process, requiring the use of more perfected and sophisticated tools for design, planning and construction management. The use of BIM-technologies allows minimizing the risks associated with design errors and errors that occur during construction. This article discusses a visual planning method using the 4D model, which allows the project team to create an accurate and complete construction plan, which is much more difficult to achieve with the help of traditional planning methods. The use of the 4D model in the construction of a 70-story building allowed to detect spatial and temporal errors before the start of construction work. In addition to identifying design errors, 4D modeling has allowed to optimize the construction, as follows: to optimize the operation of cranes, the placement of building structures and materials at various stages of construction, to optimize the organization of work performance, as well as to monitor the activities related to the preparation of the construction site for compliance with labor protection and safety requirements, which resulted in saving money and time.

  10. Construction Management--Exploding Some Myths.

    Science.gov (United States)

    Kluenker, Charles

    1986-01-01

    Construction management on educational facility projects provides boards of education with documentation showing the project is on track. Eight "myths" surrounding construction management are explained. (MLF)

  11. Problems of development and ecological construction in terms of design and construction activities in the Volgograd region

    OpenAIRE

    Taranova Anna Valer'evna; Borisova Natal'ja Ivanovna

    2016-01-01

    The analysis of existing problems and the further development of ecological construction in the Volgograd region. Discusses the problem of socio-environmental plan in terms of project construction activities. The necessity of identifying the sources of negative impact on the construction of residential properties, define solutions for their further elimination, the authors show the necessity of using environmental innovation techniques in modern construction industry.

  12. Use sulfoferritic cements in construction

    Science.gov (United States)

    Samchenko, Svetlana V.; Zorin, Dmitriy A.

    2018-03-01

    Currently, high-rise construction has received increasing attention around the world. In the big cities under construction is less space and one solution is the high-rise construction. However, high-rise buildings use special requirements, such as strength, thermal insulation, wind load and others. When concrete is exposed to continuous loads by wind or to mechanical loads, it undergoes abrasion. Resistance to this process depends on the characteristics of materials that the concrete and finishing seams are made of. Research on increasing impact and abrasion resistance of calcium sulfoferrite-based cement stone from the perspective of formation of cement stone structure will be instrumental in developing durable materials for application in high-rise construction.

  13. 15 CFR 8b.18 - New construction.

    Science.gov (United States)

    2010-01-01

    ... 15 Commerce and Foreign Trade 1 2010-01-01 2010-01-01 false New construction. 8b.18 Section 8b.18... construction. (a) Design and construction. Each facility or part of a facility constructed by, on behalf of, or... construction was commenced after the effective date of this part. (b) Alteration. Each facility or part of a...

  14. Federal Environmental Requirements for Construction

    Data.gov (United States)

    Department of Veterans Affairs — This guide provides information on federal environmental requirements for construction projects. It is written primarily for owners of construction projects and for...

  15. BIM for Construction Site Logistics Management

    Directory of Open Access Journals (Sweden)

    K. Whitlock

    2018-01-01

    Full Text Available Emerging Building Information Modelling (BIM has been hailed as a revolutionary technology and information management process that facilitates collaboration and more efficient design and construction processes through innovative 3D modelling software, open access to information and multidisciplinary integration. The deadline of compliance to BIM level 2 on all public sector centrally procured construction projects has expired leaving many construction firms anxious to adopt BIM. Most common documented applications of BIM have been in the areas of architectural and structural design, quantity surveying, construction project management, and sustainability with very limited peer-reviewed studies on construction logistics management. The aim of this study is to investigate how BIM can be applied to construction logistics management. This study adopts a desk-top approach, with articles sources from renowned scientific databases such as ScienceDirect, Google Scholar and Emerald. The study culminated in the identification of benefits and barriers of adopting BIM for construction logistics management. Given only a desk-top approach has been used, the recommendation for future study is to build on this to conduct an empirical study using both qualitative and quantitative data. This will provide an in-depth understanding of the use of BIM for construction logistics management and open opportunities for further research.

  16. Constructed wetlands : the Canadian context

    Energy Technology Data Exchange (ETDEWEB)

    Speer, S.; Champagne, P. [Queen' s Univ., Kingston, ON (Canada). Dept. of Civil Engineering

    2006-07-01

    Large volumes of wastewater from livestock and production facilities must be treated to minimize the contamination of waterways in agricultural areas. This paper investigated the use of constructed wetlands as a lower-cost and efficient method of treating agricultural wastewaters. The study found that while constructed wetlands required limited maintenance, temperature dependency of the constructed wetlands systems is a limiting factor in their widespread implementation. Lower operating temperatures are only overcome by constructing larger wetlands systems, which require a substantial amount of land. The Canadian climate poses significant challenges to the implementation of constructed wetlands, which become inoperative during winter months. Plants and bacteria normally become dormant or die during winter months, which can create a lag in wetland treatment during the initial months of operation in the Spring. Snowmelt and added rainfall in the Spring can also create a high flow within the wetland cells, as many constructed wetlands rely on runoff as a feed source. Washout of bacteria can occur. Wastewater storage systems or further engineering of the wetlands may be required. It was concluded that insulating wetland cells will maintain a warmer operating temperature, while the addition of an aeration system will increase the treatment efficiency of the wetland during winter months. 17 refs., 5 tabs., 2 figs.

  17. Issues engulfed Saudi Arabia construction workers

    Science.gov (United States)

    Al-Emad, N. H.; Rahman, I. A.

    2018-04-01

    This paper presents an exploratory study conducted in Makkah city to uncover issues faced by construction workers from the construction leaders’ perspective. Eleven construction leaders/experts were interviewed to unleash their experiences on handling the foreign workers working in Makkah construction projects. Most of the experts are senior management staffs with more than 10 years’ working experience in Saudi Arabia construction industry. The interviews were carried out in semi structured mode where all the information was captured manually and also electronically. The identified issues were sorted based on its commonality into 10 clusters. Hence in each cluster, the numbers of issue considered by the experts are reflecting the importance of that particular cluster. The result of the clusters according to the number of issues mentioned by the experts are safety issues, restricted government regulation, demotivated issues, lack of quality workers, poor living quality, communication barriers, adaption issues, poor attitudes, lack of logistical arrangements and lack of education. With these identified issues it will assist the construction players in the construction industry of Saudi Arabia in dealing with their workers.

  18. Some problems of NPP construction base improvement

    International Nuclear Information System (INIS)

    Movchan, S.V.

    1984-01-01

    NPP construction bases are characterized by high cost of construction and large area. Duration of base construction makes up 3-4 years, labour contents for their erection constitute 600-900 thousand man-days. Delays in organizing functional base services essentially decelerate construction rates of the main NPP buildings. Maximum joining of separate buildings by their functional assignment and structural peculiarities, wide application of container buildings, partial utilization of permanent buildings of production centre for construction needs; transition to new organizational form of construction based on industrial production of buildings; production of volumetric structural-technological cells with mounted equipment manufactured at specialized plants, mounting NPP components with stock produced cells, consideration of the problem of large power centre creation are necessary for reduction of construction centres, area reduction of cost and duration of their construction

  19. Self-Organized Construction with Continuous Building Material

    DEFF Research Database (Denmark)

    Heinrich, Mary Katherine; Wahby, Mostafa; Divband Soorati, Mohammad

    2016-01-01

    Self-organized construction with continuous, structured building material, as opposed to modular units, offers new challenges to the robot-based construction process and lends the opportunity for increased flexibility in constructed artifact properties, such as shape and deformation. As an example...... investigation, we look at continuous filaments organized into braided structures, within the context of bio-hybrids constructing architectural artifacts. We report the result of an early swarm robot experiment. The robots successfully constructed a braid in a self-organized process. The construction process can...... be extended by using different materials and by embedding sensors during the self-organized construction directly into the braided structure. In future work, we plan to apply dedicated braiding robot hardware and to construct sophisticated 3-d structures with local variability in patterns of filament...

  20. Sustainable development and construction industry in Malaysia

    Directory of Open Access Journals (Sweden)

    Suliman L. Kh. M.

    2009-12-01

    Full Text Available Sustainable construction is a way for the building and infrastructure industry to move towards achieving sustainable development, taking into account environmental, socioeconomic and cultural issues. Differing approaches and differing economic markets lead to different priorities. This paper presents the construction scenario of Malaysia and the developments in sustainable construction taking place in this country. Barriers to the implementation of sustainable construction are discussed. A list of recommendation was proposed to drive sustainable construction in this country. In conclusion, the status of sustainable construction in Malaysia is still in its infancy. The lack of awareness, training and education, ineffective procurement systems, existing public policies and regulatory frameworks are among the major barriers for sustainable construction in Malaysia. Besides the needs for capacities, technologies and tools, total and ardent commitment by all players in the construction sectors including the governments and the public atlarge are required in order to achieve sustainable construction in Malaysia.

  1. Automatic Construction by Contour Crafting Technology

    Directory of Open Access Journals (Sweden)

    Mohammad Reza Khorramshahi

    2017-07-01

    Full Text Available Contour Crafting is a novel technology in construction industry based on 3D printing that uses robotics to construct free form building structures by repeatedly laying down layers of material such as concrete. It is actually an approach to scale up automatic fabrication from building small industrial parts to constructing buildings. However, there are little information about contour crafting (CC in current use; present paper aims to describe the operational steps of creating a whole building by the machine reviewing relevant literature. Furthermore, it will represent the advantages of CC usage compared to traditional construction methods, as well as its applicability in construction industry.

  2. Diagnosis of Fault Modes Masked by Control Loops with an Application to Autonomous Hovercraft Systems

    Directory of Open Access Journals (Sweden)

    Ioannis A. Raptis

    2013-01-01

    Full Text Available This paper introduces a methodology for the design, testing and assessment of incipient failure detection techniques for failing components/systems of an autonomous vehicle masked or hidden by feedback control loops. It is recognized that the optimum operation of critical assets (aircraft, autonomous systems, etc. may be compromised by feedback control loops by masking severe fault modes while compensating for typical disturbances. Detrimental consequences of such occurrences include the inability to detect expeditiously and accurately incipient failures, loss of control and inefficient operation of assets in the form of fuel overconsumption and adverse environmental impact. We pursue a systems engineering process to design, construct and test an autonomous hovercraft instrumented appropriately for improved autonomy. Hidden fault modes are detected with performance guarantees by invoking a Bayesian estimation approach called particle filtering. Simulation and experimental studies are employed to demonstrate the efficacy of the proposed methods.

  3. Confirmatory Factor Analysis Alternative: Free, Accessible CBID Software.

    Science.gov (United States)

    Bott, Marjorie; Karanevich, Alex G; Garrard, Lili; Price, Larry R; Mudaranthakam, Dinesh Pal; Gajewski, Byron

    2018-02-01

    New software that performs Classical and Bayesian Instrument Development (CBID) is reported that seamlessly integrates expert (content validity) and participant data (construct validity) to produce entire reliability estimates with smaller sample requirements. The free CBID software can be accessed through a website and used by clinical investigators in new instrument development. Demonstrations are presented of the three approaches using the CBID software: (a) traditional confirmatory factor analysis (CFA), (b) Bayesian CFA using flat uninformative prior, and (c) Bayesian CFA using content expert data (informative prior). Outcomes of usability testing demonstrate the need to make the user-friendly, free CBID software available to interdisciplinary researchers. CBID has the potential to be a new and expeditious method for instrument development, adding to our current measurement toolbox. This allows for the development of new instruments for measuring determinants of health in smaller diverse populations or populations of rare diseases.

  4. Wall Construction; Carpentry: 901892.

    Science.gov (United States)

    Dade County Public Schools, Miami, FL.

    The curriculum guide outlines a course designed to provide instruction in floor and wall layout, and in the diverse methods and construction of walls. Upon completion of this course the students should have acquired a knowledge of construction plans and structural foundations in addition to a basic knowledge of mathematics. The course consists of…

  5. ACCELERATING CONSTRUCTION INDUSTRY DEVELOPMENT

    Directory of Open Access Journals (Sweden)

    Mohan M. Kumaraswamy

    2006-06-01

    Full Text Available The needs for construction industry development are initially viewed from the broader perspectives of imperatives for infrastructure development and national development. All these are clearly more critical in developing countries. A non-exhaustive set of potential drivers and common barriers to construction industry development is identified from previous research. These suggest the usefulness of consolidating a cluster of recent proposals and exercises aiming at (a construction organization development in terms of an over-arching management support system model, as well as improved information and knowledge management; and (b project team development in the context of relationally integrated teams and supply chains, joint risk management and ‘technology and knowledge exchange’ in joint ventures, as well as longer term public private partnerships. These apparently disparate research thrusts are threaded together into a pattern that may inspire, if not feed, specific research and development (R & D agendas for construction industry development in different countries according to their own priorities, constraints and stages of infrastructure and national development.

  6. Horizon Dam design, construction, and quality management

    Energy Technology Data Exchange (ETDEWEB)

    Patrick, B. [EBA Engineering Consultants Ltd., Nanaimo, BC (Canada); Sisson, R. [Canadian Natural Resources Ltd., Fort McMurray, AB (Canada)

    2010-07-01

    This paper discussed the design and construction of the Tar River Diversion Dam and the quality management system (QMS) used during construction. The project was unusual in that the company constructed the project using its own workforce, without contractors, under challenging schedule and site conditions. The topography, geology and geotechnical aspects of the site were discussed along with the embankment design, seepage control measures and construction execution. The QMS was designed to fit the needs of the unique construction execution strategy and meet safety, reliability, performance, and operation requirements, comply with all regulations and approval conditions, and identify and communicate risk to the appropriate entity. Specifications and construction procedures had to be modified to accommodate equipment operators trained with the skills and techniques of mine operations, not those associated with conventional civil construction projects. Foundation movement identified during construction required mid-build design changes, construction rescheduling, and additional deformation analyses to determine long-term stability. The QMS allowed changes in the understanding of site conditions to be quickly addressed and risks to be identified and cost-effectively mitigated. Design consultants were used to modify designs and appropriately identify and mitigate risks. The approach to embankment construction was successful because the QMS included processes for change management, issue resolution, and risk-benefit assessment, and because experienced personnel had a regular presence on the construction site and worked collaboratively. The effective QMS was deemed to be integral to the success of the construction project. 1 tab., 7 figs.

  7. 12 CFR 263.35 - Conduct of hearings.

    Science.gov (United States)

    2010-01-01

    ...) General rules. (1) Hearings shall be conducted so as to provide a fair and expeditious presentation of the..., respondents may agree among themselves as to their order of presentation of their cases, but if they do not...

  8. 4D modeling in high-rise construction

    Directory of Open Access Journals (Sweden)

    Balakina Anastasiya

    2018-01-01

    Full Text Available High-rise construction is a complex construction process, requiring the use of more perfected and sophisticated tools for design, planning and construction management. The use of BIM-technologies allows minimizing the risks associated with design errors and errors that occur during construction. This article discusses a visual planning method using the 4D model, which allows the project team to create an accurate and complete construction plan, which is much more difficult to achieve with the help of traditional planning methods. The use of the 4D model in the construction of a 70-story building allowed to detect spatial and temporal errors before the start of construction work. In addition to identifying design errors, 4D modeling has allowed to optimize the construction, as follows: to optimize the operation of cranes, the placement of building structures and materials at various stages of construction, to optimize the organization of work performance, as well as to monitor the activities related to the preparation of the construction site for compliance with labor protection and safety requirements, which resulted in saving money and time.

  9. Methodology for construction compliance monitoring in the crediting of investment projects for road construction

    Science.gov (United States)

    Vaynshtok, Natalia

    2017-10-01

    The article provides the results of development of the methodology for construction compliance monitoring in the crediting of investment projects for road construction. Work scope analysis of construction audit was conducted and an algorithm of financial audit in the crediting investment projects was developed. Furthermore, the possible pitfalls and abuses of counterparties were investigated and recommendations were given allowing the bank to receive objective and independent information on the progress of the project in real time. This mechanism is useful for the bank in insurance of possible risks, targeted and rational use of credit funds.

  10. Formation of optimal construction fleet composition

    Science.gov (United States)

    Tuskaeva, Zalina

    2017-10-01

    Machinery supply and its rational use in construction processes considerably determine the final product of construction organizations. Therefore, the problem of defining the type size composition of the construction fleet as one of the lowest material-intensive productions, is of a particular importance.

  11. 48 CFR 1522.804-2 - Construction.

    Science.gov (United States)

    2010-10-01

    ... 48 Federal Acquisition Regulations System 6 2010-10-01 2010-10-01 true Construction. 1522.804-2 Section 1522.804-2 Federal Acquisition Regulations System ENVIRONMENTAL PROTECTION AGENCY SOCIOECONOMIC... Construction. Each contracting office having construction contract responsibility shall maintain a list of...

  12. Construction technique for a chemical plant (III)

    International Nuclear Information System (INIS)

    1978-08-01

    This book mentions design of instrumentation and construction for a chemical plant, which deals with the change of instrumentation, construction, choice of material test, construction of thermal insulation work for a chemical plant, about classification and main materials, the problems on construction, painting plan and construction for a chemical plant such as paint and painting, safety and hygiene, cleaning of a chemical plant on the time for washing and decision of the way of washing, start up test for a chemical plant such as introduction of the check, construction and repair.

  13. Constructive Memory: Past and Future

    OpenAIRE

    Schacter, Daniel L.

    2012-01-01

    Human memory is not a literal reproduction of the past, but instead relies on constructive processes that are sometimes prone to error and distortion. Understanding of constructive memory has accelerated during recent years as a result of research that has linked together its cognitive and neural bases. This article focuses on three aspects of constructive memory that have been the target of recent research: (i) the idea that certain kinds of memory distortions reflect the operation of adapti...

  14. Modelling Constructs

    DEFF Research Database (Denmark)

    Kindler, Ekkart

    2009-01-01

    , these notations have been extended in order to increase expressiveness and to be more competitive. This resulted in an increasing number of notations and formalisms for modelling business processes and in an increase of the different modelling constructs provided by modelling notations, which makes it difficult......There are many different notations and formalisms for modelling business processes and workflows. These notations and formalisms have been introduced with different purposes and objectives. Later, influenced by other notations, comparisons with other tools, or by standardization efforts...... to compare modelling notations and to make transformations between them. One of the reasons is that, in each notation, the new concepts are introduced in a different way by extending the already existing constructs. In this chapter, we go the opposite direction: We show that it is possible to add most...

  15. 46 CFR 190.07-10 - Construction.

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 7 2010-10-01 2010-10-01 false Construction. 190.07-10 Section 190.07-10 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) OCEANOGRAPHIC RESEARCH VESSELS CONSTRUCTION AND ARRANGEMENT Structural Fire Protection § 190.07-10 Construction. (a) The hull, superstructure, structural...

  16. 46 CFR 160.002-4 - Construction.

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 6 2010-10-01 2010-10-01 false Construction. 160.002-4 Section 160.002-4 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) EQUIPMENT, CONSTRUCTION, AND MATERIALS... and 5 § 160.002-4 Construction. (a) General. This specification covers life preservers which...

  17. 46 CFR 161.012-7 - Construction.

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 6 2010-10-01 2010-10-01 false Construction. 161.012-7 Section 161.012-7 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) EQUIPMENT, CONSTRUCTION, AND MATERIALS: SPECIFICATIONS AND APPROVAL ELECTRICAL EQUIPMENT Personal Flotation Device Lights § 161.012-7 Construction. (a...

  18. 46 CFR 160.174-9 - Construction.

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 6 2010-10-01 2010-10-01 false Construction. 160.174-9 Section 160.174-9 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) EQUIPMENT, CONSTRUCTION, AND MATERIALS: SPECIFICATIONS AND APPROVAL LIFESAVING EQUIPMENT Thermal Protective Aids § 160.174-9 Construction. (a) General...

  19. 47 CFR 22.1035 - Construction period.

    Science.gov (United States)

    2010-10-01

    ... 47 Telecommunication 2 2010-10-01 2010-10-01 false Construction period. 22.1035 Section 22.1035 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) COMMON CARRIER SERVICES PUBLIC MOBILE SERVICES Offshore Radiotelephone Service § 22.1035 Construction period. The construction period (see § 22.142) for...

  20. 46 CFR 160.171-9 - Construction.

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 6 2010-10-01 2010-10-01 false Construction. 160.171-9 Section 160.171-9 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) EQUIPMENT, CONSTRUCTION, AND MATERIALS: SPECIFICATIONS AND APPROVAL LIFESAVING EQUIPMENT Immersion Suits § 160.171-9 Construction. (a) General. Each...

  1. 46 CFR 160.042-3 - Construction.

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 6 2010-10-01 2010-10-01 false Construction. 160.042-3 Section 160.042-3 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) EQUIPMENT, CONSTRUCTION, AND MATERIALS: SPECIFICATIONS AND APPROVAL LIFESAVING EQUIPMENT Skids, Liferaft, for Merchant Vessels § 160.042-3 Construction...

  2. 48 CFR 422.804-2 - Construction.

    Science.gov (United States)

    2010-10-01

    ... 48 Federal Acquisition Regulations System 4 2010-10-01 2010-10-01 false Construction. 422.804-2... APPLICATION OF LABOR LAWS TO GOVERNMENT ACQUISITIONS Equal Employment Opportunity 422.804-2 Construction. The HCA shall ensure that each contracting office, awarding nonexempt construction contracts, maintains a...

  3. 46 CFR 160.047-4 - Construction.

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 6 2010-10-01 2010-10-01 false Construction. 160.047-4 Section 160.047-4 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) EQUIPMENT, CONSTRUCTION, AND MATERIALS... and Child § 160.047-4 Construction. (a) General. This specification covers buoyant vests which...

  4. 46 CFR 160.176-9 - Construction.

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 6 2010-10-01 2010-10-01 false Construction. 160.176-9 Section 160.176-9 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) EQUIPMENT, CONSTRUCTION, AND MATERIALS: SPECIFICATIONS AND APPROVAL LIFESAVING EQUIPMENT Inflatable Lifejackets § 160.176-9 Construction. (a) General...

  5. Advances in power station construction

    International Nuclear Information System (INIS)

    Anon.

    1986-01-01

    This book is about power stations - specifically about the construction of modern power stations by the Central Electricity Generating Board in England and Wales over the past decade. It describes the work of the CEGB's Generation Development and Construction Division, perhaps better known throughout the world as simply 'Barnwood' where it has its Headquarters in Gloucester, UK. Barnwood was formed in the early 1970s to concentrate the CEGB's then dispersed engineering construction resources to cope with the smaller number but greatly increased size and complexity of modern power station projects. Perhaps uniquely over the ten years since its formation Barnwood has managed the construction of all types of station; coal-fired, oil-fired, nuclear, pumped storage and hydro. This book tells the story of these various projects and gives detailed descriptions of the respective stations. However, it is not intended as a comprehensive description of power station technology. Rather it is intended to convey the scale of such projects and the many decisions and compromises which have to be made in the course of managing their construction

  6. National construction, Denmark. Flat roofs

    Energy Technology Data Exchange (ETDEWEB)

    Rode, C

    1995-04-01

    The Paris meeting of IEA Annex 24 (held in the spring of 1991) declared a set of typical building constructions, the Heat, Air and Moisture characteristics of which should be dealt with as part of the Annex work. Each type of construction was assigned to one or more countries as their National Construction, and it has been the responsibility of each country to prepare a report on what may be regarded as common knowledge in the country on the hygrothermal behaviour of their construction. This knowledge is in part due to experimental work carried out by research bodies in the countries, and due to experience form practice. This report has two main sections: Section 2 gives a general overview of the design of the most common variants of flat roofs and common knowledge reported for such roofs. Section 3 gives an account of research projects carried out in Denmark on flat roofs to analyze their hygrothermal performance. Whenever possible, an emphasis will be put on the hygrothermal consequences of thermally insulating such constructions. (EG) 19 refs.

  7. Niche construction game cancer cells play.

    Science.gov (United States)

    Bergman, Aviv; Gligorijevic, Bojana

    2015-10-01

    Niche construction concept was originally defined in evolutionary biology as the continuous interplay between natural selection via environmental conditions and the modification of these conditions by the organism itself. Processes unraveling during cancer metastasis include construction of niches, which cancer cells use towards more efficient survival, transport into new environments and preparation of the remote sites for their arrival. Many elegant experiments were done lately illustrating, for example, the premetastatic niche construction, but there is practically no mathematical modeling done which would apply the niche construction framework. To create models useful for understanding niche construction role in cancer progression, we argue that a) genetic, b) phenotypic and c) ecological levels are to be included. While the model proposed here is phenomenological in its current form, it can be converted into a predictive outcome model via experimental measurement of the model parameters. Here we give an overview of an experimentally formulated problem in cancer metastasis and propose how niche construction framework can be utilized and broadened to model it. Other life science disciplines, such as host-parasite coevolution, may also benefit from niche construction framework adaptation, to satisfy growing need for theoretical considerations of data collected by experimental biology.

  8. Niche construction game cancer cells play

    Science.gov (United States)

    Bergman, Aviv; Gligorijevic, Bojana

    2015-10-01

    Niche construction concept was originally defined in evolutionary biology as the continuous interplay between natural selection via environmental conditions and the modification of these conditions by the organism itself. Processes unraveling during cancer metastasis include construction of niches, which cancer cells use towards more efficient survival, transport into new environments and preparation of the remote sites for their arrival. Many elegant experiments were done lately illustrating, for example, the premetastatic niche construction, but there is practically no mathematical modeling done which would apply the niche construction framework. To create models useful for understanding niche construction role in cancer progression, we argue that a) genetic, b) phenotypic and c) ecological levels are to be included. While the model proposed here is phenomenological in its current form, it can be converted into a predictive outcome model via experimental measurement of the model parameters. Here we give an overview of an experimentally formulated problem in cancer metastasis and propose how niche construction framework can be utilized and broadened to model it. Other life science disciplines, such as host-parasite coevolution, may also benefit from niche construction framework adaptation, to satisfy growing need for theoretical considerations of data collected by experimental biology.

  9. 23 CFR 710.311 - Construction advertising.

    Science.gov (United States)

    2010-04-01

    ... 23 Highways 1 2010-04-01 2010-04-01 false Construction advertising. 710.311 Section 710.311...-WAY AND REAL ESTATE Project Development § 710.311 Construction advertising. The State must manage real... advertising for construction, the State shall develop ROW availability statements and certifications related...

  10. 46 CFR 168.15-10 - Construction.

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 7 2010-10-01 2010-10-01 false Construction. 168.15-10 Section 168.15-10 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) NAUTICAL SCHOOLS CIVILIAN NAUTICAL SCHOOL VESSELS Accommodations § 168.15-10 Construction. (a) The accommodations provided must be securely constructed, properly...

  11. 48 CFR 53.236-1 - Construction.

    Science.gov (United States)

    2010-10-01

    ... 48 Federal Acquisition Regulations System 2 2010-10-01 2010-10-01 false Construction. 53.236-1... AND FORMS FORMS Prescription of Forms 53.236-1 Construction. The following forms are prescribed, as stated below, for use in contracting for construction, alteration, or repair, or dismantling, demolition...

  12. 46 CFR 190.20-15 - Construction.

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 7 2010-10-01 2010-10-01 false Construction. 190.20-15 Section 190.20-15 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) OCEANOGRAPHIC RESEARCH VESSELS CONSTRUCTION AND ARRANGEMENT Accomodations for Officers, Crew, and Scientific Personnel § 190.20-15 Construction. All crew...

  13. 46 CFR 92.07-10 - Construction.

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 4 2010-10-01 2010-10-01 false Construction. 92.07-10 Section 92.07-10 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CARGO AND MISCELLANEOUS VESSELS CONSTRUCTION AND ARRANGEMENT Structural Fire Protection § 92.07-10 Construction. (a) The hull, superstructure, structural...

  14. 46 CFR 160.005-4 - Construction.

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 6 2010-10-01 2010-10-01 false Construction. 160.005-4 Section 160.005-4 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) EQUIPMENT, CONSTRUCTION, AND MATERIALS...), Models 52 and 56 § 160.005-4 Construction. (a) General. This specification covers life preservers which...

  15. 48 CFR 922.804-2 - Construction.

    Science.gov (United States)

    2010-10-01

    ... 48 Federal Acquisition Regulations System 5 2010-10-01 2010-10-01 false Construction. 922.804-2... APPLICATION OF LABOR LAWS TO GOVERNMENT ACQUISITION Equal Employment Opportunity 922.804-2 Construction. (a) Construction contracts, including cost-sharing contracts, are subject to OFCCP orders applicable in particular...

  16. 46 CFR 160.056-2 - Construction.

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 6 2010-10-01 2010-10-01 false Construction. 160.056-2 Section 160.056-2 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) EQUIPMENT, CONSTRUCTION, AND MATERIALS: SPECIFICATIONS AND APPROVAL LIFESAVING EQUIPMENT Rescue Boat § 160.056-2 Construction. (a) General. Rescue boats...

  17. 46 CFR 160.017-13 - Construction.

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 6 2010-10-01 2010-10-01 false Construction. 160.017-13 Section 160.017-13 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) EQUIPMENT, CONSTRUCTION, AND MATERIALS: SPECIFICATIONS AND APPROVAL LIFESAVING EQUIPMENT Chain Ladder § 160.017-13 Construction. (a) General. Each chain...

  18. COMPETITIVENESS OF THE INDONESIAN CONSTRUCTION INDUSTRY

    Directory of Open Access Journals (Sweden)

    Agung Budiwibowo

    2009-06-01

    Full Text Available Indonesia’s construction industry is important to the national economy. However, its competitiveness is considered low due to the lack of success of its development strategy and policy. A new approach known as the cluster approach is being used to make strategy and policy in order to develop a stronger more competitive industry . This paper discusses the layout of the Indonesian construction cluster and its competitiveness. The archival analysis research approach was used to identify the construction cluster. The analysis was based on the I/O tables of the years 1995 and 2000, which were published by the Indonesian Central Bureau of Statistics. The results suggest that the Indonesian construction cluster consists of the industries directly involved in construction as the core, with the other related and supporting industries as the balance. The anatomy of the Indonesian construction cluster permits structural changes to happen within it. These changes depend on policies that regulate the cluster’s constituents.

  19. Spatial distributions of niche-constructing populations

    Directory of Open Access Journals (Sweden)

    Xiaozhuo Han

    2015-12-01

    Full Text Available Niche construction theory regards organisms not only as the object of natural selection but also an active subject that can change their own selective pressure through eco-evolutionary feedbacks. Through reviewing the existing works on the theoretical models of niche construction, here we present the progress made on how niche construction influences genetic structure of spatially structured populations and the spatial-temporal dynamics of metapopulations, with special focuses on mathematical models and simulation methods. The majority of results confirmed that niche construction can significantly alter the evolutionary trajectories of structured populations. Organism-environmental interactions induced by niche construction can have profound influence on the dynamics, competition and diversity of metapopulations. It can affect fine-scale spatially distribution of species and spatial heterogeneity of the environment. We further propose a few research directions with potentials, such as applying adaptive dynamics or spatial game theory to explore the effect of niche construction on phenotypic evolution and diversification.

  20. Japanese experience in nuclear power plant construction

    International Nuclear Information System (INIS)

    Seko, T.

    1989-01-01

    Development of LWR in JAPAN started by introducing LWR from the U.S.A. Since then we have been improving existing technology and promoting domestic technology development based on experiences accumulated in Japan. As a result, recent operating performance has been excellent. As far as construction work is concerned, we also have been making our best efforts to improve the performance of construction work itself, with the cooperation of manufacturers. As for construction work, we have succeeded in improving the quality of construction work, shortening the construction period and reducing construction costs through new technology and Japanese-style work management

  1. Employment and winter construction

    DEFF Research Database (Denmark)

    Hansen, Ernst Jan de Place; Larsen, Jacob Norvig

    2011-01-01

    Reduced seasonal building activity in the construction sector is often assumed to be related to hard winter conditions for building activities and poor working conditions for construction workers, resulting in higher costs and poor quality of building products, particularly in the northern hemisp...... of contracts for workers is more likely to explain differences in seasonal activity than climatic or technological factors....

  2. Cooperation in Construction:

    DEFF Research Database (Denmark)

    Vogelius, Peter; Storgaard, Kresten

    2016-01-01

    The study presents a building project executed by a major Danish construction company, where cooperation and its staging were essential for achieving high productivity and competitiveness. The form of this cooperation is the main theme for the article. The contractor actively changed the communic......The study presents a building project executed by a major Danish construction company, where cooperation and its staging were essential for achieving high productivity and competitiveness. The form of this cooperation is the main theme for the article. The contractor actively changed...... the companies in the case can be understood as possessing a social capital which is enforced and united by initiatives of the main contractor. The social capital was built up and maintained through the actual constitution of cooperation already in the initial phase of bidding before the building process....... The management logic of the main contractor is interpreted as based on a sociology-inspired understanding focusing on norms and social values rather than on contractual (law) and functional (engineering) logic, which had hitherto been prevalent in Danish construction management....

  3. Construction inspection manual of procedures

    Science.gov (United States)

    2009-01-01

    This manual provides highway construction personnel with relevant, practical information in order to perform accurate inspections and provide relevant construction procedural information for the various roadway and structures items of work. It is the...

  4. 12 CFR 561.30 - Nonresidential construction loan.

    Science.gov (United States)

    2010-01-01

    ... REGULATIONS AFFECTING ALL SAVINGS ASSOCIATIONS § 561.30 Nonresidential construction loan. The term nonresidential construction loan means a loan for construction of other than one or more dwelling units. ... 12 Banks and Banking 5 2010-01-01 2010-01-01 false Nonresidential construction loan. 561.30...

  5. Construction Analysis during the Design Process

    NARCIS (Netherlands)

    Vries, de B.; Harink, J.M.J.; Martens, B.; Brown, A.

    2005-01-01

    4D CAD systems are used by contractors for visually checking the construction process. To enable simulation of the construction process, the construction planner links building components from a CAD model with the activities from a project planning. In this paper we describe a method to generate a

  6. 46 CFR 92.20-15 - Construction.

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 4 2010-10-01 2010-10-01 false Construction. 92.20-15 Section 92.20-15 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CARGO AND MISCELLANEOUS VESSELS CONSTRUCTION AND ARRANGEMENT Accommodations for Officers and Crew § 92.20-15 Construction. All crew spaces are to be...

  7. 42 CFR 136.110 - Facilities construction.

    Science.gov (United States)

    2010-10-01

    ... 42 Public Health 1 2010-10-01 2010-10-01 false Facilities construction. 136.110 Section 136.110..., DEPARTMENT OF HEALTH AND HUMAN SERVICES INDIAN HEALTH Grants for Development, Construction, and Operation of Facilities and Services § 136.110 Facilities construction. In addition to other requirements of this subpart...

  8. 21 CFR 211.65 - Equipment construction.

    Science.gov (United States)

    2010-04-01

    ... 21 Food and Drugs 4 2010-04-01 2010-04-01 false Equipment construction. 211.65 Section 211.65 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) DRUGS... construction. (a) Equipment shall be constructed so that surfaces that contact components, in-process materials...

  9. 46 CFR 151.40-5 - Construction.

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 5 2010-10-01 2010-10-01 false Construction. 151.40-5 Section 151.40-5 Shipping COAST... LIQUID HAZARDOUS MATERIAL CARGOES Temperature or Pressure Control Installations § 151.40-5 Construction. Construction of machinery or equipment, such as heat exchangers, condensers, piping, etc., associated with...

  10. 29 CFR 1910.12 - Construction work.

    Science.gov (United States)

    2010-07-01

    ... 29 Labor 5 2010-07-01 2010-07-01 false Construction work. 1910.12 Section 1910.12 Labor... Construction work. (a) Standards. The standards prescribed in part 1926 of this chapter are adopted as... provisions thereof, to every employment and place of employment of every employee engaged in construction...

  11. Management of waste from packaging of construction materials in building construction works

    OpenAIRE

    González Pericot, Natalia; Río Merino, Mercedes del

    2011-01-01

    Every material arriving at the construction site comes protected in some type of packaging, fundamentally cardboard, plastic or wood, and presently the great majority of these packagings finish in a container mixed with the rest of waste of the construction work. The increasing tendency to use prefabricated materials increases the volume of packaging necessary in product transport; in addition, the traditional materials also arrive more protected with packaging. A specific management for ...

  12. Opportunities and barriers to straw construction

    DEFF Research Database (Denmark)

    White, Caroline Meyer; Howard, Thomas J.; Lenau, Torben Anker

    2012-01-01

    produced to support communication between clients and the consultants and facilitate the straw build design and decision making process. The intended audiences for the design guide are clients of small scale construction projects, architects, engineers, builders of straw construction, homeowner...... construction, and a series of qualitative interviews with a variety of stakeholders from previous straw build housing projects, results were gathered to find the most influential motives, barriers and considerations for straw build housing construction. Based on this empirical data, a design guide has been...

  13. Implementation of lean construction techniques for minimizing the risks effect on project construction time

    Directory of Open Access Journals (Sweden)

    Usama Hamed Issa

    2013-12-01

    Full Text Available The construction projects involve various risk factors which have various impacts on time objective that may lead to time-overrun. This study suggests and applies a new technique for minimizing risk factors effect on time using lean construction principles. The lean construction is implemented in this study using the last planner system through execution of an industrial project in Egypt. Evaluating the effect of using the new tool is described in terms of two measurements: Percent Expected Time-overrun (PET and Percent Plan Completed (PPC. The most important risk factors are identified and assessed, while PET is quantified at the project start and during the project execution using a model for time-overrun quantification. The results showed that total project time is reduced by 15.57% due to decreasing PET values, while PPC values improved. This is due to minimizing and mitigating the effect of most of the risk factors in this project due to implementing lean construction techniques. The results proved that the quantification model is suitable for evaluating the effect of using lean construction techniques. In addition, the results showed that average value of PET due to factors affected by lean techniques represents 67% from PET values due to all minimized risk factors.

  14. Alignment of Partnering with Construction IT

    Directory of Open Access Journals (Sweden)

    Eleni Papadonikolaki

    2017-11-01

     As the construction industry evolves into an information-driven sector, the alignment of construction IT with inter-organisational management is preeminent for managing the inherent complexities of the industry. In parallel, embracing inter-organisational approaches for information management such as BIM is a promisingway forward for SCM and construction management.

  15. 40 CFR 40.115-1 - Construction.

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 1 2010-07-01 2010-07-01 false Construction. 40.115-1 Section 40.115-1... DEMONSTRATION GRANTS § 40.115-1 Construction. May include the preliminary planning to determine the economic and... action necessary to the construction of a facility, the erection, acquisition, alteration, remodeling...

  16. Industrial Disputes in the Construction Sector

    Directory of Open Access Journals (Sweden)

    L.J Perry

    2012-11-01

    Full Text Available The Cole Royal Commission enquiry into the building and construction (abbreviated to ‘construction’ sector recommended controversial workplace-relation reforms for that sector. The recommended changes are likely to be enshrined in legislation within the year. The Commission drew on analyses of industrial disputes that focused, in the main, on quite recent experience. This paper attempts to give a broader historical perspective on disputes in that sector by considering the pattern of disputes for the entire post-World War II period. Accordingly, data on disputes and employees during the entire period are gathered from Australian Bureau of Statistics current and archived sources. These data are classified according to sector (construction versus non-construction and analysed. It is found that the strike rate has, on average, been greater in the construction sector than in the non-construction sector. However, there have been periods during which disputes in the construction sector have been relatively low. The most recent period was during the period of the Accord (1983-96, during which the strike rate in the construction sector fell relatively strongly. The analysis of this relatively broad historical period draws attention, among other things, to the possibility that the sort of strategies employed during the Accord years – strategies of cooperation and consensus building – may provide a more effective means of bringing industrial peace to the workplace relations scene of the construction sector than policies that are relatively confrontational.

  17. Structural Impact of Construction Loads

    Science.gov (United States)

    2012-08-01

    Numerous bridge construction accidents have occurred across the country because of construction loadings, which are an underemphasized : topic in many DOT specifications and design manuals. Bridge girders are least stable when they are subjected to c...

  18. Recent advances in transition-metal-catalyzed intermolecular carbomagnesiation and carbozincation

    Directory of Open Access Journals (Sweden)

    Kei Murakami

    2013-02-01

    Full Text Available Carbomagnesiation and carbozincation reactions are efficient and direct routes to prepare complex and stereodefined organomagnesium and organozinc reagents. However, carbon–carbon unsaturated bonds are generally unreactive toward organomagnesium and organozinc reagents. Thus, transition metals were employed to accomplish the carbometalation involving wide varieties of substrates and reagents. Recent advances of transition-metal-catalyzed carbomagnesiation and carbozincation reactions are reviewed in this article. The contents are separated into five sections: carbomagnesiation and carbozincation of (1 alkynes bearing an electron-withdrawing group; (2 alkynes bearing a directing group; (3 strained cyclopropenes; (4 unactivated alkynes or alkenes; and (5 substrates that have two carbon–carbon unsaturated bonds (allenes, dienes, enynes, or diynes.

  19. Environmental standards and project construction: A review

    International Nuclear Information System (INIS)

    Mason, P.F.; Thornberry, H.L.

    1991-01-01

    In the past decade, changes have occurred in the area of environmental regulation. This paper identifies the typical environmental standards applicable to project construction, recent environmental regulatory issues and trends, and identifies new environmental issues which must be considered in project construction. These include (1) handling hazardous chemicals in the workplace, (2) construction at formerly utilized sites, (3) disposal of debris, construction materials and hazardous waste, and (4) training and experience of construction personnel in environmental issues

  20. Microwave-Assisted Synthesis of Mesoporous Nano-Hydroxyapatite Using Surfactant Templates

    Science.gov (United States)

    Mesoporous nano-hydroxyapatite (n-HAP) was expeditiously synthesized using the pseudo sol-gel microwave-assisted protocol (30 min) in the presence of two novel templates, namely sodium lauryl ether sulfate (SLES) and linear alkylbenzenesulfonate (LABS). The cooperative self-assem...

  1. Liberalisation of air cargo transport

    Science.gov (United States)

    2002-05-02

    Over a period of many years, international air cargo demand has continued to increase more rapidly than international air passenger demand. Air cargo arrangements need to be as efficient and expeditious as possible, to meet user requirements for air ...

  2. Spatio-Temporal Data Construction

    Directory of Open Access Journals (Sweden)

    Hai Ha Le

    2013-08-01

    Full Text Available On the route to a spatio-temporal geoscience information system, an appropriate data model for geo-objects in space and time has been developed. In this model, geo-objects are represented as sequences of geometries and properties with continuous evolution in each time interval. Because geomodeling software systems usually model objects at specific time instances, we want to interpolate the geometry and properties from two models of an object with only geometrical constraints (no physical or mechanical constraints. This process is called spatio-temporal data construction or morphological interpolation of intermediate geometries. This paper is strictly related to shape morphing, shape deformation, cross-parameterization and compatible remeshing and is only concerned with geological surfaces. In this study, two main sub-solutions construct compatible meshes and find trajectories in which vertices of the mesh evolve. This research aims to find an algorithm to construct spatio-temporal data with some constraints from the geosciences, such as cutting surfaces by faulting or fracturing phenomena and evolving boundaries attached to other surfaces. Another goal of this research is the implementation of the algorithm in a software product, namely a gOcad plug-in. The four main procedures of the algorithm are cutting the surfaces, setting up constraints, partitioning and calculating the parameterizations and trajectories. The software has been tested to construct data for a salt dome and other surfaces in regard to the geological processes of faulting, deposition and erosion. The result of this research is an algorithm and software for the construction of spatio-temporal data.

  3. When Construction Material Traders Goes Electronic: Analysis of SMEs in Malaysian Construction Industry

    OpenAIRE

    Dzul Fahmi Nordin; Rosmini Omar

    2012-01-01

    This paper analyzed the perception of e-commerce application services by construction material traders in Malaysia. Five attributes were tested: usability, reputation, trust, privacy and familiarity. Study methodology consists of survey questionnaire and statistical analysis that includes reliability analysis, factor analysis, ANOVA and regression analysis. The respondents were construction material traders, including hardware stores in Klang Valley, Kuala Lumpur. Find...

  4. SPECIFICITY IN DEVELOPMENT OF CONSTRUCTION INDUSTRY

    Directory of Open Access Journals (Sweden)

    O. S. Golubova

    2012-01-01

    Full Text Available Specificity in development of construction industry of the Republic of Belarus determines  character of competition on the construction market, forms a pricing, marketing and product policy of building companies. Construction represents itself as a highly developed complex where interaction of business entities is of rather complicated multilateral character.

  5. Study on construction technology for repository

    International Nuclear Information System (INIS)

    Tanai, Kenji; Iwasa, Kengo; Hasegawa, Hiroshi; Miura, Kazuhiko; Okutsu, Kazuo; Kobayashi, Masaaki

    1999-11-01

    For the construction of underground facilities comprising access tunnels, connecting tunnels, main tunnels and disposal tunnels, a large number of tunnels will be excavated in deep rock formations. These excavations will extend hundreds kilometers in total length. Therefore, special attention must be paid, to transporting large volume of debris, ventilation, emergency escape routes in case of accident, and other factors. In addition, special attention must also paid to potential accidents which might in underground excavations, including unstable facing phenomena (such as collapse and swelling of facing at weak layer sections), spring water flow resulting collapse of rock, gas eruption, and rock burst. While considering these factors to be emphasized during the construction of geological disposal facilities, the investigation reviewed the existing working methods on individual construction technologies of access tunnels, main tunnels, connecting tunnels, disposal tunnels, and disposal pit, based on the recognition that the present state deals with a wide range of geological environments, and conducted investigation about the construction methods for each tunnel on the basis current technologies, and described the outline of these methods. Furthermore, for the items to be particularly emphasized on site characterization and siting data such as ground pressure and spring water, the investigation reviewed the current countermeasure works, and made survey on the phenomena appeared during actual tunnel construction works and their countermeasures, and carried out a study on effectiveness of these countermeasures. This constructing of disposal site in deep geological formations is basically possible by applying, or confirming, current excavation technologies for tunnels and underground facilities. A systematic construction system combines separate technologies relating to construction, (excavation technology, tunnel support work method, etc.). Such systems can be

  6. Plant Engineering and Construction System with Knowledge Management: A Case Study in NPP Construction in Hitachi-GE NE

    International Nuclear Information System (INIS)

    Mochida, T.; Hamamoto, M.; Nakamitsu, N.

    2016-01-01

    Full text: Hitachi-GE Nuclear Energy, Ltd. (HGNE) has more than 40 years BWR plants construction experience. The company continues to develop plant engineering system and plant construction systems based on the experience and the lessons learned. Currently, these systems are integrated in a variety of knowledge bases using the latest information technology (IT). Their performance is continuously validated in the recent NPP constructions. Typical examples are shown as case studies for knowledge management. These plant engineering and construction management systems are essential to achieve the on-time and on-budget-goals in NPP construction projects. (author

  7. Budget performance reporting and construction work packaging

    International Nuclear Information System (INIS)

    Strong, M.G.; Weyers, L.L.

    1976-01-01

    A changing financial, technological, and regulatory environment has increased the complexity, costliness, and risk involved in constructing new generating facilities. A primary challenge facing utility executives is to hold down costs on these construction projects. New construction management techniques are required to accomplish this. Commonwealth Edison has responded by implementing a new Budget Performance Reporting System and a Construction Work Packaging System. The new systems are being used successfully on four major construction projects with budgets totaling over $4 billion

  8. Priorities in Construction IT Research

    DEFF Research Database (Denmark)

    Gaarslev, Axel

    1999-01-01

    Gives the results of a survey of the use and needs of research in IT in relation to construction......Gives the results of a survey of the use and needs of research in IT in relation to construction...

  9. Sustainable Transition of Housing and Construction

    DEFF Research Database (Denmark)

    This book presents recent research into sustainable transition of housing and construction through contributions from researchers and knowledge providers that have worked with change processes within housing and construction. The contributors represent different research and development...... environments, each with their own tradition and with a number of different research projects behind them in the field. Their common ground is that they have researched and analyzed construction, dwellings and housing areas with a view to energy-, environment- and climate-oriented transition of the housing...... and construction sector, with a focus on either political, socio-cultural, technical or design challenges. The contributions thus represent both technological, architectural, sociological and political aspects of the Danish housing and construction field. The aim of the book has not been to add another book...

  10. Constructive memory: past and future.

    Science.gov (United States)

    Schacter, Daniel L

    2012-03-01

    Human memory is not a literal reproduction of the past, but instead relies on constructive processes that are sometimes prone to error and distortion. Understanding of constructive memory has accelerated during recent years as a result of research that has linked together its cognitive and neural bases. This article focuses on three aspects of constructive memory that have been the target of recent research: (i) the idea that certain kinds of memory distortions reflect the operation of adaptive cognitive processes that contribute to the efficient functioning of memory; (ii) the role of a constructive memory system in imagining or simulating possible future events; and (iii) differences between true and false memories that have been revealed by functional neuroimaging techniques. The article delineates the theoretical implications of relevant research, and also considers some clinical and applied implications.

  11. Non-shoring construction for T/G pedestal beams

    International Nuclear Information System (INIS)

    Abe, T.

    1992-01-01

    The T/G pedestal construction work has been the critical path within the T/B construction work of BWR type nuclear power plant. In order to meet the requirement of shortening the construction period and improved in safety on a Turbine Building (T/B) construction work, Non-soring construction for T/G Pedestal Beams was developed. By applying this method to T/G pedestal construction work, we succeeded in shortening the T/B construction period and improvement in safety significantly. (author)

  12. 9 CFR 91.20 - General construction.

    Science.gov (United States)

    2010-01-01

    ... of construction materials such as wood, metal plate, or pipe may be used for stalls, crates, or pens... accessible to animals. A combination of wood and steel pipe or other steel profile construction may be... 9 Animals and Animal Products 1 2010-01-01 2010-01-01 false General construction. 91.20 Section 91...

  13. 36 CFR 14.29 - Timely construction.

    Science.gov (United States)

    2010-07-01

    ... 36 Parks, Forests, and Public Property 1 2010-07-01 2010-07-01 false Timely construction. 14.29...-OF-WAY Procedures § 14.29 Timely construction. (a) Unless otherwise provided by law, a period of up to five years from the date a right-of-way is granted is allowed for completion of construction...

  14. BIM-BASED SCHEDULING OF CONSTRUCTION

    DEFF Research Database (Denmark)

    Andersson, Niclas; Büchmann-Slorup, Rolf

    2010-01-01

    The potential of BIM is generally recognized in the construction industry, but the practical application of BIM for management purposes is, however, still limited among contractors. The objective of this study is to review the current scheduling process of construction in light of BIM...... and communicate. Scheduling on the detailed level, on the other hand, follows a stipulated approach to scheduling, i.e. the Last Planner System (LPS), which is characterized by involvement of all actors in the construction phase. Thus, the major challenge when implementing BIM-based scheduling is to improve...

  15. A theory of construction management?

    Directory of Open Access Journals (Sweden)

    Gerard de Valence

    2012-09-01

    Full Text Available The links between theory and construction management (CM, and for that matter construction economics (CE, are not strong (see de Valence 2011. This may be one of the reasons why they have not gained complete acceptance as academic disciplines and are not seen as distinct branches of economics and management respectively. Another reason may be that products and production (the focus of management and economic theories respectively are not the same as projects and project management in general, and construction projects and CM in particular.

  16. Reverse logistics in the construction industry.

    Science.gov (United States)

    Hosseini, M Reza; Rameezdeen, Raufdeen; Chileshe, Nicholas; Lehmann, Steffen

    2015-06-01

    Reverse logistics in construction refers to the movement of products and materials from salvaged buildings to a new construction site. While there is a plethora of studies looking at various aspects of the reverse logistics chain, there is no systematic review of literature on this important subject as applied to the construction industry. Therefore, the objective of this study is to integrate the fragmented body of knowledge on reverse logistics in construction, with the aim of promoting the concept among industry stakeholders and the wider construction community. Through a qualitative meta-analysis, the study synthesises the findings of previous studies and presents some actions needed by industry stakeholders to promote this concept within the real-life context. First, the trend of research and terminology related with reverse logistics is introduced. Second, it unearths the main advantages and barriers of reverse logistics in construction while providing some suggestions to harness the advantages and mitigate these barriers. Finally, it provides a future research direction based on the review. © The Author(s) 2015.

  17. Construction contracting for the 1990s

    International Nuclear Information System (INIS)

    Kane, C.; Lyon, V.F.

    1991-01-01

    This paper reports that power plant constructing during the 1980s is over. Demand growth projections presently anticipate a need for 100,000 MW of new capacity by the year 2000, with only a small percentage of the demand growth currently under construction. Given a six-year lead time for baseload plants, a surge of activity must now begin. Another development over the past five years has been a conscious decision by regulators in increase rates only for the costs of efficiently built plants. The cost of construction inefficiencies will no longer be shouldered by investors. Large construction claims, excessive cost overruns, and expensive delays will no longer be passed on to the consumer automatically. Utility commissions will require the inefficient builders to either clean up their act or forego building their own plants. The most traditional contracting scheme, general contracting, will probably be the lease desirable in the construction of new power plants. General contracting is a single, general construction contract based on a detailed design. The design is not performed by the general contractor

  18. 7 CFR 15b.19 - New construction.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 1 2010-01-01 2010-01-01 false New construction. 15b.19 Section 15b.19 Agriculture... ACTIVITIES RECEIVING FEDERAL FINANCIAL ASSISTANCE Accessibility § 15b.19 New construction. (a) Design and construction. Each facility or part of a facility constructed by, on behalf of, or for the use of a recipient...

  19. 41 CFR 101-8.310 - New construction.

    Science.gov (United States)

    2010-07-01

    ... 41 Public Contracts and Property Management 2 2010-07-01 2010-07-01 true New construction. 101-8... FINANCIAL ASSISTANCE 8.3-Discrimination Prohibited on the Basis of Handicap § 101-8.310 New construction. (a) Design and construction. Each facility or part of a facility constructed by, on behalf of, or for the use...

  20. NanoData Landscape Compilation. Construction

    NARCIS (Netherlands)

    Allan, J.E.M.; Bakker, B.J.; Buist, H.E.; Flament, G.; Hartmann, C.; Jawad, I.; Kuijpers, L.T.; Kuittinen, H.; Noyons, E.; Stolwijk, C.C.M.; Olaeta, X.U.; Yegros, A.

    2017-01-01

    This report offers a snapshot of the status of the environment for nanotechnology in the context of construction. The construction industry covers the building, maintaining and repairing of buildings and infrastructures for living, working and transport, including providing materials for those

  1. Construction of SPring-8 LINAC

    International Nuclear Information System (INIS)

    Yokomizo, Hideaki; Yoshikawa, Hiroshi; Suzuki, Shinsuke; Yanagida, Ken-ichi; Mizuno, Akihiko; Hori, Toshihiko; Tamezane, Kenji; Kodera, Masahiko; Sakaki, Hironao; Mashiko, Katsuo

    1993-01-01

    Construction of the linac building has been started in February 1993. The components of the linac are under manufacturing. The preinjector of linac was already constructed and temporarily installed in Tokai Establishment in order to test the beam quality. (author)

  2. 46 CFR 151.15-3 - Construction.

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 5 2010-10-01 2010-10-01 false Construction. 151.15-3 Section 151.15-3 Shipping COAST... LIQUID HAZARDOUS MATERIAL CARGOES Tanks § 151.15-3 Construction. This section lists the requirements for construction of the types of cargo tanks defined in § 151.15-1. (a) Gravity type tanks. Gravity type cargo...

  3. 40 CFR 260.10 - Definitions.

    Science.gov (United States)

    2010-07-01

    ... physical sciences and the principles of engineering and mathematics, acquired by a professional education... determined by an explosives or munitions emergency response specialist. Such situations may require immediate and expeditious action by an explosives or munitions emergency response specialist to control...

  4. Highly efficient one-pot three-component synthesis of naphthopyran derivatives in water catalyzed by hydroxyapatite

    Science.gov (United States)

    An expeditious and efficient protocol for the synthesis of naphthopyrans has been developed that proceeds via one-pot three-component sequential reaction in water catalyzed by hydroxyapatite or sodium-modified-hydroxyapatite. The title compounds have been obtained in high yield a...

  5. Microwave Technology--Applications in Chemical Synthesis

    Science.gov (United States)

    Microwave heating, being specific and instantaneous, is unique and has found a place for expeditious chemical syntheses. Specifically, the solvent-free reactions are convenient to perform and have advantages over the conventional heating protocols as summarized in the previous se...

  6. Constructive Consumer Choice Processes.

    OpenAIRE

    Bettman, James R; Luce, Mary Frances; Payne, John W

    1998-01-01

    Consumer decision making has been a focal interest in consumer research, and consideration of current marketplace trends ( e.g., technological change, an information explosion) indicates that this topic will continue to be critically important. We argue that consumer choice is inherently constructive. Due to limited processing capacity, consumers often do not have well-defined existing preferences, but construct them using a variety of strategies contingent on task demands. After describing c...

  7. International Construction Measurement Standard

    OpenAIRE

    Mitchell, Charles

    2016-01-01

    The International Construction Measurement Standard Coalition (the Coalition) was formed on 17 June 2015 after meeting at the International Monetary Fund in Washington DC, USA. The Coalition, comprising the organisations listed below at the date of publication, aims to bring about consistency in construction cost reporting standards internationally. This is achieved by the creation and adoption of this ICMS, an agreed international standard for the structuring and presentation of cost reports...

  8. Factors Affecting Competitive Strategies in International Construction Companies

    Directory of Open Access Journals (Sweden)

    Tuğçe ERCAN

    2013-02-01

    Full Text Available Due to rising competition in the international construction market, competitive strategies are becoming ever more important. This study aims to identify the level of importance of a variety of competitive strategies in construction companies to create a theoretical framework for competitive strategies in international construction business. In the questionnaire titled: ‘Identifying the Parameters of Strategic Performance Comparison Tool in International Construction Companies’, professionals were asked the level of importance of parameters in acquiring a competitive edge in international markets for construction companies. 82 people who currently work for international construction companies responded the questionnaire. The Relative Importance Index (RII of competitive strategies in construction companies was calculated using the survey results. The construct was redesigned through the Pearson Correlation and principal components analysis (PCA. The results of the PCA denoted that the construct of competitive strategies in construction companies can be explained by three main factors in sync with Porter’s three generic competitive strategy types: F1 Cost Leadership in Construction, F2 Specialization and Focus and F3 Differentiation in Construction and Company Resources. The analysis results show that the competitive strategies related to “Differentiation in Construction and Company Resources” have a greater importance level, while the diversification strategies have a lower importance level. Which means specialization in some type of construction activity and focus on a specific group of customers is more effective than diversification strategies in gaining a competitive advantage in the market.

  9. Prospective safety performance evaluation on construction sites.

    Science.gov (United States)

    Wu, Xianguo; Liu, Qian; Zhang, Limao; Skibniewski, Miroslaw J; Wang, Yanhong

    2015-05-01

    This paper presents a systematic Structural Equation Modeling (SEM) based approach for Prospective Safety Performance Evaluation (PSPE) on construction sites, with causal relationships and interactions between enablers and the goals of PSPE taken into account. According to a sample of 450 valid questionnaire surveys from 30 Chinese construction enterprises, a SEM model with 26 items included for PSPE in the context of Chinese construction industry is established and then verified through the goodness-of-fit test. Three typical types of construction enterprises, namely the state-owned enterprise, private enterprise and Sino-foreign joint venture, are selected as samples to measure the level of safety performance given the enterprise scale, ownership and business strategy are different. Results provide a full understanding of safety performance practice in the construction industry, and indicate that the level of overall safety performance situation on working sites is rated at least a level of III (Fair) or above. This phenomenon can be explained that the construction industry has gradually matured with the norms, and construction enterprises should improve the level of safety performance as not to be eliminated from the government-led construction industry. The differences existing in the safety performance practice regarding different construction enterprise categories are compared and analyzed according to evaluation results. This research provides insights into cause-effect relationships among safety performance factors and goals, which, in turn, can facilitate the improvement of high safety performance in the construction industry. Copyright © 2015 Elsevier Ltd. All rights reserved.

  10. The NIOSH Construction Program: research to practice, impact, and developing a National Construction Agenda.

    Science.gov (United States)

    Gillen, Matt

    2010-06-01

    The U.S. National Institute for Occupational Safety and Health (NIOSH) conducts research to improve and protect the health and safety of workers. This paper describes the experience of the NIOSH Construction Program with two recent program planning initiatives intended to improve the program: (a) an independent external review of work over the past decade and (b) the development of strategic goals organized into a "National Construction Agenda" to guide a decade of future work. These goals, developed with input from construction industry stakeholders and researchers, are a part of the NIOSH National Occupational Research Agenda (NORA) initiative. The NORA goals are intended to provide an ambitious set of goals for all construction stakeholders to work together on. Both efforts relate to insuring the relevance and impact of research, reflecting an emerging policy perspective that research programs should be judged not just by the quality and quantity of science produced, but by the industry impact and tangible benefit resulting from the research. This paper describes how views on research planning have evolved to incorporate lessons learned about how research leads to improved safety and health for workers. It also describes the process used to develop the goals and the resulting strategic and intermediate goals that comprise the National Construction Agenda. (c) 2010 Elsevier Ltd. All rights reserved.

  11. A variational approach to niche construction.

    Science.gov (United States)

    Constant, Axel; Ramstead, Maxwell J D; Veissière, Samuel P L; Campbell, John O; Friston, Karl J

    2018-04-01

    In evolutionary biology, niche construction is sometimes described as a genuine evolutionary process whereby organisms, through their activities and regulatory mechanisms, modify their environment such as to steer their own evolutionary trajectory, and that of other species. There is ongoing debate, however, on the extent to which niche construction ought to be considered a bona fide evolutionary force, on a par with natural selection. Recent formulations of the variational free-energy principle as applied to the life sciences describe the properties of living systems, and their selection in evolution, in terms of variational inference. We argue that niche construction can be described using a variational approach. We propose new arguments to support the niche construction perspective, and to extend the variational approach to niche construction to current perspectives in various scientific fields. © 2018 The Authors.

  12. Greener and Expeditious Synthesis of Bioactive Heterocycles using Microwave Irradiation

    Science.gov (United States)

    The utilization of green chemistry techniques is dramatically reducing chemical waste and reaction times as has recently been proven in several organic syntheses and chemical transformations. To illustrate these advantages in the synthesis of bio-active heterocycles, we have stud...

  13. DoD Information Technology Acquisition: Delivering Information Technology Capabilities Expeditiously

    Science.gov (United States)

    2013-09-01

    but they possess limited IT acquisition experience (Fryer- Biggs , 2012). According to Frank Kendall (2012), USD(AT&L), acquisition personnel need...we have a very long recovery time to correct it. (Fryer- Biggs , 2012) The DoD has the means to develop its own trained professionals but even that... John P. Kotter (1996) postulated what he considered to be the primary reasons why change efforts fail. Kotter offered eight reasons why this failure

  14. Sequential Construction of Costly Networks

    Energy Technology Data Exchange (ETDEWEB)

    Gutfraind, Alexander [Los Alamos National Laboratory

    2011-01-01

    Natural disasters or attacks often disrupt infrastructure networks requiring a costly recovery. This motivates an optimization problem where the objecitve is to construct the nodes of a graph G(V;E), and the cost of each node is dependent on the number of its neighbors previously constructed, or more generally, any properties of the previously-completed subgraph. In this optimization problem the objective is to find a permutation of the nodes which results in the least construction cost. We prove that in the case where the cost of nodes is a convex function in the number of neighbors, the optimal construction sequence is to start at a single node and move outwards. We also introduce algorithms and heuristics for solving various instances of the problem. Those methods can be applied to help reduce the cost of recovering from disasters as well as to plan the deployment of new network infrastructure.

  15. Management of construction safety at RR site

    International Nuclear Information System (INIS)

    Pathak, B.C.; Khatsuriya, J.R.

    2016-01-01

    Construction industries are one of the most hazardous industries and hence, promotion of safety remains one of the greatest challenges facing construction industry today. According to ILO estimates: Each year at least 60,000 fatal accidents occur on construction sites around the world or one fatal accident every ten minutes. One in six fatal accidents at work occurs on a construction site. In industrialized countries, as many as 25-40 per cent of work related deaths occur on construction sites, even though the sector employs only 6-10 per cent of the workforce. The number of fatalities occurring from construction work in India is also quite disturbing. Though, the fall of person from height and through openings were the major causes for fatal /serious accidents, the risk of fatal accident involving material handling equipment, either during handling or its maintenance is also significantly high due to use of large number of material handling equipments during construction work. (author)

  16. Design Processes and Constructive Ergonomics

    DEFF Research Database (Denmark)

    Broberg, Ole

    2015-01-01

    This paper discusses some central issues in the concept of constructive ergonomics. It does so by reflecting on experiences from ergonomics intervention projects carried out in Denmark. Constructive ergonomics has a huge potential as a new way to go for ergonomics research and practice. However, ...

  17. Studies on Labour Safety in Construction Sites

    Directory of Open Access Journals (Sweden)

    S. Kanchana

    2015-01-01

    Full Text Available Construction industry has accomplished extensive growth worldwide particularly in past few decades. For a construction project to be successful, safety of the structures as well as that of the personnel is of utmost importance. The safety issues are to be considered right from the design stage till the completion and handing over of the structure. Construction industry employs skilled and unskilled labourers subject to construction site accidents and health risks. A proper coordination between contractors, clients, and workforce is needed for safe work conditions which are very much lacking in Indian construction companies. Though labour safety laws are available, the numerous accidents taking place at construction sites are continuing. Management commitment towards health and safety of the workers is also lagging. A detailed literature study was carried out to understand the causes of accidents, preventive measures, and development of safe work environment. This paper presents the results of a questionnaire survey, which was distributed among various categories of construction workers in Kerala region. The paper examines and discusses in detail the total working hours, work shifts, nativity of the workers, number of accidents, and type of injuries taking place in small and large construction sites.

  18. Studies on Labour Safety in Construction Sites

    Science.gov (United States)

    Kanchana, S.; Sivaprakash, P.; Joseph, Sebastian

    2015-01-01

    Construction industry has accomplished extensive growth worldwide particularly in past few decades. For a construction project to be successful, safety of the structures as well as that of the personnel is of utmost importance. The safety issues are to be considered right from the design stage till the completion and handing over of the structure. Construction industry employs skilled and unskilled labourers subject to construction site accidents and health risks. A proper coordination between contractors, clients, and workforce is needed for safe work conditions which are very much lacking in Indian construction companies. Though labour safety laws are available, the numerous accidents taking place at construction sites are continuing. Management commitment towards health and safety of the workers is also lagging. A detailed literature study was carried out to understand the causes of accidents, preventive measures, and development of safe work environment. This paper presents the results of a questionnaire survey, which was distributed among various categories of construction workers in Kerala region. The paper examines and discusses in detail the total working hours, work shifts, nativity of the workers, number of accidents, and type of injuries taking place in small and large construction sites. PMID:26839916

  19. IRT-based test construction

    OpenAIRE

    van der Linden, Willem J.; Theunissen, T.J.J.M.; Boekkooi-Timminga, Ellen; Kelderman, Henk

    1987-01-01

    Four discussions of test construction based on item response theory (IRT) are presented. The first discussion, "Test Design as Model Building in Mathematical Programming" (T.J.J.M. Theunissen), presents test design as a decision process under certainty. A natural way of modeling this process leads to mathematical programming. General models of test construction are discussed, with information about algorithms and heuristics; ideas about the analysis and refinement of test constraints are also...

  20. Assessing construction innovation: theoretical and practical perspectives

    Directory of Open Access Journals (Sweden)

    Peter Davis

    2016-09-01

    Full Text Available Innovation is key for productivity improvement and advancements in different sectors of the economy, including the construction sector.  The criticism of the slow pace of innovation in construction industry may be unwarranted, considering the structure of the industry and nature of the construction business.  The loosely coupled nature of firms, mostly Small and Medium Enterprises (SME’s, delivering ‘projects’ through partial engagement, together with the distinction between the project innovation and firm innovation makes it difficult to extract innovations in a meaningful way.  The problem also lies in conceptualising, defining, articulating and assessing innovation in construction.  The literature is replete with research into construction innovation, however, there is limited research into understanding how innovation is perceived and narrated in practice.  The paper aims to explore how innovation is assessed and narrated in construction, specifically analysing theory and practice perspectives.  A theoretical model was constructed from a structured literature review illustrating existing discourse and narratives of construction innovation assessment.  A qualitative analysis of ‘Professional Excellence in Building’ submission documents to the Australian Institute of Building was performed to identify the practice perspective of innovation.  The findings suggest that internal organizational and process innovation account for the majority of improvements identified.  Importantly a taxonomy of narrative is developed that articulates how the construction industry in Australia views industry innovation.

  1. Socioecological Aspects of High-rise Construction

    Science.gov (United States)

    Eichner, Michael; Ivanova, Zinaida

    2018-03-01

    In this article, the authors consider the socioecological problems that arise in the construction and operation of high-rise buildings. They study different points of view on high-rise construction and note that the approaches to this problem are very different. They also analyse projects of modern architects and which attempts are made to overcome negative impacts on nature and mankind. The article contains materials of sociological research, confirming the ambivalent attitude of urban population to high-rise buildings. In addition, one of the author's sociological survey reveals the level of environmental preparedness of the university students, studying in the field of "Construction of unique buildings and structures", raising the question of how future specialists are ready to take into account socioecological problems. Conclusion of the authors: the construction of high-rise buildings is associated with huge social and environmental risks, negative impact on the biosphere and human health. This requires deepened skills about sustainable design methods and environmental friendly construction technologies of future specialists. Professor M. Eichner presents in the article his case study project results on implementation of holistic eco-sustainable construction principles for mixed-use high-rise building in the metropolis of Cairo.

  2. CONSTRUCTION SENSITIVITY IN PINGYAO TONE SANDHI

    Directory of Open Access Journals (Sweden)

    Hui-shan Lin

    2012-06-01

    Full Text Available This paper investigates tone sandhi phenomena in Pingyao, a Jin dialect spoken in Shanxi province in China. Pingyao tone sandhi is special in that tone sandhi in bi-syllabic strings is construction sensitive, but tone sandhi in tri-syllabic strings is not fully conditioned by construction types. Based on Optimality Theory (OT, this paper proposes analyses for bi-tonal and tri-tonal sandhi in Pingyao. We show that while bi-tonal sandhi can be accounted for by assuming that there are different grammars associated with different construction types, the lack of construction sensitivity in certain tri-syllabic strings suggests that the association between construction types and phonological grammars can be sacrificed to comply with a higher demand. In Pingyao, the higher demand is to avoid having a tri-tonal string with marked tone sandhi domain from being associated with conflicting grammars.

  3. Computer aided construction of fault tree

    International Nuclear Information System (INIS)

    Kovacs, Z.

    1982-01-01

    Computer code CAT for the automatic construction of the fault tree is briefly described. Code CAT makes possible simple modelling of components using decision tables, it accelerates the fault tree construction process, constructs fault trees of different complexity, and is capable of harmonized co-operation with programs PREPandKITT 1,2 for fault tree analysis. The efficiency of program CAT and thus the accuracy and completeness of fault trees constructed significantly depends on the compilation and sophistication of decision tables. Currently, program CAT is used in co-operation with programs PREPandKITT 1,2 in reliability analyses of nuclear power plant systems. (B.S.)

  4. Analysis on optimization of the critical path for civil construction period of Fangjiashan nuclear island constructed under EPC mode

    International Nuclear Information System (INIS)

    Liu Yongqing; Wu Youcong; Qiu Jinhong

    2011-01-01

    Based on the actual situation of nuclear island civil construction in Fangjiashan nuclear power plant and combined with the arrangement of the construction schedule, the analysis on optimization of the critical path for civil construction period is conducted. The result shows that on the premise of not increasing the contract price and the total engineering cost based on the original 57-month construction period, the construction period can be shorten to 21 month through strengthening the schedule control, keeping the critical work in a reasonable duration and rearranging the link between programmers. In addition, in view of the economic analysis, if we increase the mechanical engagement and adopt special method, the 2-month construction period can be even shortened to 20 months. (authors)

  5. The application of micro UAV in construction project

    Science.gov (United States)

    Kaamin, Masiri; Razali, Siti Nooraiin Mohd; Ahmad, Nor Farah Atiqah; Bukari, Saifullizan Mohd; Ngadiman, Norhayati; Kadir, Aslila Abd; Hamid, Nor Baizura

    2017-10-01

    In every outstanding construction project, there is definitely have an effective construction management. Construction management allows a construction project to be implemented according to plan. Every construction project must have a progress development works that is usually created by the site engineer. Documenting the progress of works is one of the requirements in construction management. In a progress report it is necessarily have a visual image as an evidence. The conventional method used for photographing on the construction site is by using common digital camera which is has few setback comparing to Micro Unmanned Aerial Vehicles (UAV). Besides, site engineer always have a current issues involving limitation of monitoring on high reach point and entire view of the construction site. The purpose of this paper is to provide a concise review of Micro UAV technology in monitoring the progress on construction site through visualization approach. The aims of this study are to replace the conventional method of photographing on construction site using Micro UAV which can portray the whole view of the building, especially on high reach point and allows to produce better images, videos and 3D model and also facilitating site engineer to monitor works in progress. The Micro UAV was flown around the building construction according to the Ground Control Points (GCPs) to capture images and record videos. The images taken from Micro UAV have been processed generate 3D model and were analysed to visualize the building construction as well as monitoring the construction progress work and provides immediate reliable data for project estimation. It has been proven that by using Micro UAV, a better images and videos can give a better overview of the construction site and monitor any defects on high reach point building structures. Not to be forgotten, with Micro UAV the construction site progress is more efficiently tracked and kept on the schedule.

  6. Feedback as real-time constructions

    DEFF Research Database (Denmark)

    Keiding, Tina Bering; Qvortrup, Ane

    2014-01-01

    instant it takes place. This article argues for a clear distinction between the timing of communicative events, such as responses that are provided as help for feedback constructions, and the feedback construction itself as an event in a psychic system. Although feedback is described as an internal...

  7. 32 CFR 10.5 - Construction.

    Science.gov (United States)

    2010-07-01

    ... 32 National Defense 1 2010-07-01 2010-07-01 false Construction. 10.5 Section 10.5 National Defense Department of Defense OFFICE OF THE SECRETARY OF DEFENSE MILITARY COMMISSIONS MILITARY COMMISSION INSTRUCTIONS § 10.5 Construction. Military Commission Instructions shall be construed in a manner consistent...

  8. 18 CFR 401.124 - Construction.

    Science.gov (United States)

    2010-04-01

    ... 18 Conservation of Power and Water Resources 2 2010-04-01 2010-04-01 false Construction. 401.124 Section 401.124 Conservation of Power and Water Resources DELAWARE RIVER BASIN COMMISSION ADMINISTRATIVE MANUAL RULES OF PRACTICE AND PROCEDURE General Provisions § 401.124 Construction. This part is...

  9. 49 CFR 219.17 - Construction.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 4 2010-10-01 2010-10-01 false Construction. 219.17 Section 219.17 Transportation Other Regulations Relating to Transportation (Continued) FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF TRANSPORTATION CONTROL OF ALCOHOL AND DRUG USE General § 219.17 Construction. Nothing in this part— (a) Restricts...

  10. Mitigating construction safety risks using prevention through design.

    Science.gov (United States)

    Gangolells, Marta; Casals, Miquel; Forcada, Núria; Roca, Xavier; Fuertes, Alba

    2010-04-01

    Research and practice have demonstrated that decisions made prior to work at construction sites can influence construction worker safety. However, it has also been argued that most architects and design engineers possess neither the knowledge of construction safety nor the knowledge of construction processes necessary to effectively perform Construction Hazards Prevention through Design (CHPtD). This paper introduces a quantitative methodology that supports designers by providing a way to evaluate the safety-related performance of residential construction designs using a risk analysis-based approach. The methodology compares the overall safety risk level of various construction designs and ranks the significance of the various safety risks of each of these designs. The methodology also compares the absolute importance of a particular safety risk in various construction designs. Because the methodology identifies the relevance of each safety risk at a particular site prior to the construction stage, significant risks are highlighted in advance. Thus, a range of measures for mitigating safety risks can then be implemented during on-site construction. The methodology is specially worthwhile for designers, who can compare construction techniques and systems during the design phase and determine the corresponding level of safety risk without their creative talents being restricted. By using this methodology, construction companies can improve their on-site safety performance. Copyright 2010 Elsevier Ltd. All rights reserved.

  11. Indigenous lunar construction materials

    Science.gov (United States)

    Rogers, Wayne P.; Sture, Stein

    1991-01-01

    The utilization of local resources for the construction and operation of a lunar base can significantly reduce the cost of transporting materials and supplies from Earth. The feasibility of processing lunar regolith to form construction materials and structural components is investigated. A preliminary review of potential processing methods such as sintering, hot-pressing, liquification, and cast basalt techniques, was completed. The processing method proposed is a variation on the cast basalt technique. It involves liquification of the regolith at 1200-1300 C, casting the liquid into a form, and controlled cooling. While the process temperature is higher than that for sintering or hot-pressing (1000-1100 C), this method is expected to yield a true engineering material with low variability in properties, high strength, and the potential to form large structural components. A scenario for this processing method was integrated with a design for a representative lunar base structure and potential construction techniques. The lunar shelter design is for a modular, segmented, pressurized, hemispherical dome which could serve as habitation and laboratory space. Based on this design, estimates of requirements for power, processing equipment, and construction equipment were made. This proposed combination of material processing method, structural design, and support requirements will help to establish the feasibility of lunar base construction using indigenous materials. Future work will refine the steps of the processing method. Specific areas where more information is needed are: furnace characteristics in vacuum; heat transfer during liquification; viscosity, pouring and forming behavior of molten regolith; design of high temperature forms; heat transfer during cooling; recrystallization of basalt; and refinement of estimates of elastic moduli, compressive and tensile strength, thermal expansion coefficient, thermal conductivity, and heat capacity. The preliminary

  12. Impact of modules on the ACR construction schedule

    International Nuclear Information System (INIS)

    Choy, Ed; Elgohary, Medhat; Fairclough, Neville; Yu, Stephen; Murayama, Kouichi; Miura, Jun; Kawahata, Junichi

    2003-01-01

    The ACR (Advanced CANDU Reactor), developed by Atomic Energy of Canada Ltd. (AECL), is designed with constructability considerations as a major requirement during all project phases from the concept design stage to the detail design stage. For ACR-700, a project schedule of 48 months has been developed for the nth replicated unit with a 36 month construction period duration from First Concrete to Fuel Load. AECL, recognizing the immense benefit of collective experience, is partnering with Hitachi Ltd in the development of the ACR power plant design. AECL has gained valuable experience in implementing new construction methods at the Qinshan (Phase III) twin unit CANDU 6 plant in China, and Hitachi likewise has enjoyed success in modular construction of ABWRs in Japan. Utilizing these experiences, AECL is developing the ACR nuclear steam plant (NSP) and Hitachi is developing the Turbine Building. An overall construction strategy, which builds on the success of these construction methods from the nuclear power plant developments in China and Japan, has been developed for the ACR. The overall construction strategy comprises the 'Open Top' construction technique using a Very Heavy Lift crane, parallel construction activities, with extensive modularization and prefabrication. Modules and prefabrications are major features of the ACR design, resulting in an excess of 80% of Reactor Building internal work being completed as modules or as very streamlined traditional construction. This paper reviews the ACR construction strategy and provides examples of modules and how they impact on the ACR construction schedule. In conclusion, the ACR-700 is designed using the latest, proven construction methods to achieve a 36 month construction period for the nth replicated unit. (author)

  13. Environmental impacts of construction materials. A report on the contribution of construction materials to greenhouse gas emissions of construction; Rakennusmateriaalien ympaeristoevaikutukset. Selvitys rakennusmateriaalien vaikutuksesta rakentamisen kasvihuonekaasupaeaestoeihin, tiivistelmaeraportti

    Energy Technology Data Exchange (ETDEWEB)

    Ruuska, A.; Haekkinen, T.; Vares, S.; Korhonen, M.-R.; Myllymaa, T.

    2013-05-15

    As the energy performance of new construction improves and the related greenhouse gas (GHG) emissions diminish the carbon footprint of construction materials becomes more important. One objective in the current government's programme is to take into account construction materials and products in the energy performance assessment of buildings. At the request of the Ministry of the Environment, VTT Technical Research Centre of Finland and the Finnish Environment Institute analysed, through a case study, the significance of the environmental impacts of construction materials. The aim was to develop preliminary recommendations for guiding construction. The case study calculated the overall GHG emissions from the materials used in an apartment building over its life cycle and estimated the range of emissions. In addition, the amount of construction waste was assessed, as was the effects of waste management and waste utilisation processes on GHG emissions. This report presents a summary of the results. According to this case study, GHG emissions can vary in typical multi-storey residential buildings within the range of 1 to 2.2 or 1 to 3.9 when the site foundation work also taken into account. The study shows that the construction materials and related processes contribute significantly to the GHG emissions of a building over its life cycle. In fact the level of significance is of the same order as the heating of spaces in an A-class energy performance building. The efficient recycling of materials can contribute to reductions in GHG emissions. The study showed that the estimated benefit was 9 % of the total life-cycle emissions. In the future, specific assessments of different types of waste could look at opportunities for the recycling and reuse of critical materials. Plastics and wood are especially important waste components. Future research topics include improving the use of recycled materials, collecting information on user experiences and enhancing quality

  14. Towards improving construction labor productivity and projects’ performance

    Directory of Open Access Journals (Sweden)

    Mostafa E. Shehata

    2011-12-01

    Full Text Available Proper management of resources in construction projects can yield substantial savings in time and cost. As construction is a labor-intensive industry, this paper focuses on labor productivity in the construction industry. This study considers the current state-of-the-art issues relevant to this subject. It covers the construction labor productivity definitions, aspects, measurements, factors affecting it, different techniques used for measuring it and modeling techniques. The main outcome from the literature is that there is no standard definition of productivity. This study provides a guide for necessary steps required to improve construction labor productivity and consequently, the project performance. It can help improve the overall performance of construction projects through the implementation of the concept of benchmarks. Also, it gives an up to date concept of loss of productivity measurement for construction productivity claims. Two major case studies, from the literature, are presented to show construction labor productivity rates, factors affecting construction labor productivity and how to improve it.

  15. New Ideas for School Construction.

    Science.gov (United States)

    Producers' Council, Inc., Washington, DC.

    Present educators, architects, engineers, and building product manufacturers with a medium of common interest for discussion of mutual school construction problems, objectives, needs, ideas, capabilities and limitations. Contents include--(1) modern wood construction, (2) school room in a steel mill, (3) masonry in new school design, (4) the…

  16. 32 CFR 751.4 - Construction.

    Science.gov (United States)

    2010-07-01

    ... 32 National Defense 5 2010-07-01 2010-07-01 false Construction. 751.4 Section 751.4 National Defense Department of Defense (Continued) DEPARTMENT OF THE NAVY CLAIMS PERSONNEL CLAIMS REGULATIONS Claims Against the United States § 751.4 Construction. The provisions of this section and the Personnel...

  17. 15 CFR 1400.6 - Construction.

    Science.gov (United States)

    2010-01-01

    ... 15 Commerce and Foreign Trade 3 2010-01-01 2010-01-01 false Construction. 1400.6 Section 1400.6 Commerce and Foreign Trade Regulations Relating to Commerce and Foreign Trade (Continued) MINORITY BUSINESS DEVELOPMENT AGENCY DETERMINATION OF GROUP ELIGIBILITY FOR MBDA ASSISTANCE § 1400.6 Construction. Nothing in...

  18. 42 CFR 423.894 - Construction.

    Science.gov (United States)

    2010-10-01

    ... 42 Public Health 3 2010-10-01 2010-10-01 false Construction. 423.894 Section 423.894 Public Health CENTERS FOR MEDICARE & MEDICAID SERVICES, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICARE... Plans § 423.894 Construction. Nothing in this part must be interpreted as prohibiting or restricting: (a...

  19. 43 CFR 4.1102 - Construction.

    Science.gov (United States)

    2010-10-01

    ... 43 Public Lands: Interior 1 2010-10-01 2010-10-01 false Construction. 4.1102 Section 4.1102 Public Lands: Interior Office of the Secretary of the Interior DEPARTMENT HEARINGS AND APPEALS PROCEDURES... Construction. These rules shall be construed to achieve the just, timely, and inexpensive determination of all...

  20. Reliability and construction control

    Directory of Open Access Journals (Sweden)

    Sherif S. AbdelSalam

    2016-06-01

    Full Text Available The goal of this study was to determine the most reliable and efficient combination of design and construction methods required for vibro piles. For a wide range of static and dynamic formulas, the reliability-based resistance factors were calculated using EGYPT database, which houses load test results for 318 piles. The analysis was extended to introduce a construction control factor that determines the variation between the pile nominal capacities calculated using static versus dynamic formulae. From the major outcomes, the lowest coefficient of variation is associated with Davisson’s criterion, and the resistance factors calculated for the AASHTO method are relatively high compared with other methods. Additionally, the CPT-Nottingham and Schmertmann method provided the most economic design. Recommendations related to a pile construction control factor were also presented, and it was found that utilizing the factor can significantly reduce variations between calculated and actual capacities.

  1. 48 CFR 252.237-7023 - Continuation of Essential Contractor Services.

    Science.gov (United States)

    2010-10-01

    ... provide a written plan for continuing the performance of essential contractor services identified in...; and (v) The approach for communicating expectations to contractor employees regarding their roles and... or other designated representative as expeditiously as possible and use its best efforts to cooperate...

  2. The Impact of Transport Time on Outcomes Following Evacuation from Point of Injury

    Science.gov (United States)

    2017-06-16

    reasonable in relation to anticipated benefits and the importance of the knowledge that may reasonably be expected to result. The subject selection is...patients with traumatic injuries require urgent medical attention and expeditious evacuation to improve survival. Aeromedical evacuation platforms such as

  3. Flow cytometric immunobead assay for fast and easy detection of PML-RARA fusion proteins for the diagnosis of acute promyelocytic leukemia

    NARCIS (Netherlands)

    E.H.A. Dekking (E. H A); V.H.J. van der Velden (Vincent); A. Varro (Andras); H. Wai; S. Böttcher (Stephan); M. Kneba (Michael); E. Sonneveld (Edwin); A. Koning; N. Boeckx; N. Van Poecke; P. Lucio (Paulo); A. Mendonça; L. Sedek (Lukasz); T. Szczepanski (Tomasz); T. Kalina (Tomas); V. Kanderová (V.); P.G. Hoogeveen (Patricia); J. Flores-Montero (Juan); C. Chillón (Carmen); A. Orfao (Alberto); J.M.M. Almeida (Julia); P.A.S. Evans; C. Cullen; A.L. Noordijk; P.M. Vermeulen (P.); M.T. de Man (M.); E.P. Dixon (Eric); W.M. Comans-Bitter; J.J.M. van Dongen (Jacques)

    2012-01-01

    textabstractThe PML-RARA fusion protein is found in approximately 97% of patients with acute promyelocytic leukemia (APL). APL can be associated with life-threatening bleeding complications when undiagnosed and not treated expeditiously. The PML-RARA fusion protein arrests maturation of myeloid

  4. 78 FR 72874 - Revision of a Currently Approved Information Collection for the Energy Efficiency and...

    Science.gov (United States)

    2013-12-04

    ... grantee activities, expenditures, and results, to ensure that program funds are being used appropriately, effectively and expeditiously (especially important for Recovery Act funds); (5) Annual [[Page 72875...,960. Statutory Authority: Title V, Subtitle E of the Energy Independence and Security Act (EISA), Pub...

  5. Degradation of bromothymol blue by 'greener' nano-scale zero-valent iron synthesized using tea polyphenols

    Science.gov (United States)

    A green single-step synthesis of iron nanoparticles using tea (Camellia sinensis) polyphenols is described that uses no added surfactants/polymers as a capping or reducing agents. The expeditious reaction between polyphenols and ferric nitrate occurs within few minutes at room te...

  6. design and construction of design and construction of pilot scale

    African Journals Online (AJOL)

    eobe

    construction of the extractor, evaporator, condensate receiver and the the extractor, evaporator ... The concept of overall heat transfer coefficient was adopted for calculating the heat ..... Evaporator. Residence time for evaporation = 14070.25s.

  7. The methodic of calculation for the need of basic construction machines on construction site when developing organizational and technological documentation

    Science.gov (United States)

    Zhadanovsky, Boris; Sinenko, Sergey

    2018-03-01

    Economic indicators of construction work, particularly in high-rise construction, are directly related to the choice of optimal number of machines. The shortage of machinery makes it impossible to complete the construction & installation work on scheduled time. Rates of performance of construction & installation works and labor productivity during high-rise construction largely depend on the degree of provision of construction project with machines (level of work mechanization). During calculation of the need for machines in construction projects, it is necessary to ensure that work is completed on scheduled time, increased level of complex mechanization, increased productivity and reduction of manual work, and improved usage and maintenance of machine fleet. The selection of machines and determination of their numbers should be carried out by using formulas presented in this work.

  8. Construction and demolition waste indicators.

    Science.gov (United States)

    Mália, Miguel; de Brito, Jorge; Pinheiro, Manuel Duarte; Bravo, Miguel

    2013-03-01

    The construction industry is one of the biggest and most active sectors of the European Union (EU), consuming more raw materials and energy than any other economic activity. Furthermore, construction waste is the commonest waste produced in the EU. Current EU legislation sets out to implement construction and demolition waste (CDW) prevention and recycling measures. However it lacks tools to accelerate the development of a sector as bound by tradition as the building industry. The main objective of the present study was to determine indicators to estimate the amount of CDW generated on site both globally and by waste stream. CDW generation was estimated for six specific sectors: new residential construction, new non-residential construction, residential demolition, non-residential demolition, residential refurbishment, and non-residential refurbishment. The data needed to develop the indicators was collected through an exhaustive survey of previous international studies. The indicators determined suggest that the average composition of waste generated on site is mostly concrete and ceramic materials. Specifically for new residential and new non-residential construction the production of concrete waste in buildings with a reinforced concrete structure lies between 17.8 and 32.9 kg m(-2) and between 18.3 and 40.1 kg m(-2), respectively. For the residential and non-residential demolition sectors the production of this waste stream in buildings with a reinforced concrete structure varies from 492 to 840 kg m(-2) and from 401 to 768 kg/m(-2), respectively. For the residential and non-residential refurbishment sectors the production of concrete waste in buildings lies between 18.9 and 45.9 kg/m(-2) and between 18.9 and 191.2 kg/m(-2), respectively.

  9. Perl Modules for Constructing Iterators

    Science.gov (United States)

    Tilmes, Curt

    2009-01-01

    The Iterator Perl Module provides a general-purpose framework for constructing iterator objects within Perl, and a standard API for interacting with those objects. Iterators are an object-oriented design pattern where a description of a series of values is used in a constructor. Subsequent queries can request values in that series. These Perl modules build on the standard Iterator framework and provide iterators for some other types of values. Iterator::DateTime constructs iterators from DateTime objects or Date::Parse descriptions and ICal/RFC 2445 style re-currence descriptions. It supports a variety of input parameters, including a start to the sequence, an end to the sequence, an Ical/RFC 2445 recurrence describing the frequency of the values in the series, and a format description that can refine the presentation manner of the DateTime. Iterator::String constructs iterators from string representations. This module is useful in contexts where the API consists of supplying a string and getting back an iterator where the specific iteration desired is opaque to the caller. It is of particular value to the Iterator::Hash module which provides nested iterations. Iterator::Hash constructs iterators from Perl hashes that can include multiple iterators. The constructed iterators will return all the permutations of the iterations of the hash by nested iteration of embedded iterators. A hash simply includes a set of keys mapped to values. It is a very common data structure used throughout Perl programming. The Iterator:: Hash module allows a hash to include strings defining iterators (parsed and dispatched with Iterator::String) that are used to construct an overall series of hash values.

  10. CONSTRUCTION COST PREDICTION USING NEURAL NETWORKS

    Directory of Open Access Journals (Sweden)

    Smita K Magdum

    2017-10-01

    Full Text Available Construction cost prediction is important for construction firms to compete and grow in the industry. Accurate construction cost prediction in the early stage of project is important for project feasibility studies and successful completion. There are many factors that affect the cost prediction. This paper presents construction cost prediction as multiple regression model with cost of six materials as independent variables. The objective of this paper is to develop neural networks and multilayer perceptron based model for construction cost prediction. Different models of NN and MLP are developed with varying hidden layer size and hidden nodes. Four artificial neural network models and twelve multilayer perceptron models are compared. MLP and NN give better results than statistical regression method. As compared to NN, MLP works better on training dataset but fails on testing dataset. Five activation functions are tested to identify suitable function for the problem. ‘elu' transfer function gives better results than other transfer function.

  11. Standartization and Terminography of New Construction Terms

    Directory of Open Access Journals (Sweden)

    Zofija Babickienė

    2011-06-01

    Full Text Available The past ten year period showed the occurance of a great number of new construction terms in the Lithua- nian language. Thus it is necessary to collect and systematize construction terms, terminoids, quasi-terms and standardize them from the point of view of the Standard Lithuanian Language taking into account both logic and terminology requirements. This article deals with modern construction terms from the point of view of the Standard Lithuanian Language including newest data bases saving all actual information on them. The reseach showed that The Dictionary of Construction Terms (2003 ought to be included into The Lithuanian language Term Bank (http://terminai.vlkk.lt. It is necessary to be done for the following reasons. Firstly, because of the creation and standartization as well as sistematization process of new construction terms. Secondly, for the development of continuous scientific discusion and successful professional education. It was established that a certain number of construction terms from the point of view of the Standard Lithuanian Language should be included into new Dictionary of Construction Terms as well as into Term Bank of the Lithuanian Republic. The terms analysed in the article are concerning basement types, pile types, construction joints, also details of walls, roofs, chimneys, construction materials and etc. The analysis showed how different morphological variants and undesirable synonymous terms occur. Finally, the analysis helped to identify that the informal terms mix with formal, standard terms and conclude in incorrect term usage.

  12. Integrated construction management technology for power plants

    International Nuclear Information System (INIS)

    Okada, Hisako; Miura, Jun; Nishitani, Yasuhiko

    2003-01-01

    The improvement and rationalization of the plant construction technology has been promoted in order to shorten the construction period, to improve the quality and reliability, and especially to reduce construction costs. With the recent remarkable advances of computer technology, it is necessary to introduce an electronic information technology (IT) into the construction field, and to develop a business process. In such a situation, Hitachi has developed and applied integrated construction support system, which is consistent among design, production and construction. This system has design information and schedule information made electronically as a basic database, and characterizes with project management function based on that information. By introduction of this system, electronic processing of information and reduction of paperwork has enabled high efficiency and standardization of on-site indirect work. Furthermore, by collaboration with the civil company, electrical data exchange has been carried out and developed techniques to improve the interface between mechanical and civil work. High accuracy of construction planning and unification of schedule data have been achieved, and consequently, rework and adjustment at the job site have been greatly reduced. (author)

  13. Profit ability versus construction equipment maintenance

    OpenAIRE

    Clutts, Craig A.

    2010-01-01

    CIVINS (Civilian Institutions) Thesis document Approved for public release ; distribution is unlimited Construction equipment is a high cost of capital investment necessary for the successful existence of a private construction company and essential to the mission success of the Naval Construction Force (NCF). The highest impact cost factor other than the initial purchase investment is the expenses related to maintenance and repair. As the equipment ages, the ownership costs decrease an...

  14. New NPP Construction Experience in Finland

    International Nuclear Information System (INIS)

    Alm-Lytz, K.

    2016-01-01

    The paper discusses the experiences of the new nuclear power plant construction projects. The topics include the licensing and regulatory oversight process, completion of the design prior to construction, experience and know-how of the participating organisations, quality management in a nuclear construction project, safety culture aspects in a nuclear construction project, and the role and importance of regulator’s oversight. Finland has recent experience of new nuclear power plant construction, one plant unit being under construction close to commissioning phase and one plant unit in construction license phase. Each nation is solely responsible for the safety of its nuclear installations. Therefore, there are also national practices how nuclear power plants are licensed and how the safety and quality of these plants are verified during construction and operation. Differences in licensing, regulations and regulatory practices may have an impact on the design of the plant. There may be differences in how the detailed design has to be documented and how and when it needs to be submitted for approval to the regulator. To avoid surprises due to differences, it is beneficial for the owner and plant vendor to familiarize themselves early enough on the national practices and regulations to ensure that regulatory expectations and processes can be taken into account in the project implementation. In addition, the owner and the plant vendor have to understand what are the national safety goals and safety requirements that the plant has to fulfil, and what they mean to the detailed design of the plant. These have to be clarified and explicitly defined by the owner in terms of design criteria in the bidding documentation to avoid difficulties in the future steps of the project.

  15. Construction feasibility of OTEC platforms. Final report

    Energy Technology Data Exchange (ETDEWEB)

    Brewer, J H; Harwood, P; Solberg, K; Fjeld, S

    1978-12-01

    This study provides an evaluation of the feasibility of constructing either steel or concrete OTEC platforms of both spar and ship shape configurations for a range of platform sizes with respect to existing, developed shipyard or fabrication yard facilities that are currently active in marine vessel construction within the US. This brief study is quite broad in scope. Many parameters, including plant size; vessel type, size, configuration, and dimensions; position of heat exchangers; existing construction facility size, geographic location, and potential for modification; and, availability of undeveloped deep water construction sites affect the conclusions drawn. Nevertheless, the conclusions should remain valid and not change significantly, unless there are major changes in either vessel size or US construction capabilities. The various concepts are ranked in order of their feasibility and practicality of construction in existing or modified existing facilities and new facilities.

  16. Effects of radiation rays on construction materials

    International Nuclear Information System (INIS)

    Akkurt, I.; Kilicarslan, S.; Basyigit, C.; Kacar, A.

    2006-01-01

    Molecules that are bring into existence material determined as gas, liquid and stiff according to their internal structures and heat. Materials show various reaction to various effects that is result from all kind of materials have various internal structures. Radiation is covert materials' mechanical, physical and chemical properties. Nowadays in construction formation there isn't using only one material it is preferred that kind of materials composition because of there are run into some problems about choosing and decision sort of material. Material that using in construction is classified as metals, plastics and ceramics in three groups. About sixty percent of construction cost is being formed from construction materials. In this study effects of various radiations on construction materials are being investigated and the end of study it is being suggestion some useful construction materials according to usage land and radiation properties

  17. Construction safety program for the National Ignition Facility

    International Nuclear Information System (INIS)

    Cerruti, S.J.

    1997-01-01

    The Construction Safety Program (CSP) for NIF sets forth the responsibilities, guidelines, rules, policies and regulations for all workers involved in the construction, special equipment installation, acceptance testing, and initial activation and operation of NIF at LLNL during the construction period of NIF. During this period, all workers are required to implement measures to create a universal awareness which promotes safe practice at the work site, and which will achieve NIF's management objectives in preventing accidents and illnesses. Construction safety for NIF is predicated on everyone performing their jobs in a manner which prevents job-related disabling injuries and illnesses. The CSP outlines the minimum environment, safety, and health (ES ampersand H) standards, LLNL policies and the Construction Industry Institute (CII) Zero Injury Techniques requirements that all workers at the NIF construction site shall adhere to during the construction period of NIF. It identifies the safety requirements which the NIF organizational Elements, construction contractors and construction subcontractors must include in their safety plans for the construction period of NIF, and presents safety protocols and guidelines which workers shall follow to assure a safe and healthful work environment. The CSP also identifies the ES ampersand H responsibilities of LLNL employees, non-LLNL employees, construction contractors, construction subcontractors, and various levels of management within the NIF Program at LLNL. In addition, the CSP contains the responsibilities and functions of ES ampersand H support organizations and administrative groups, and describes their interactions with the NIF Program

  18. Construction safety program for the National Ignition Facility

    Energy Technology Data Exchange (ETDEWEB)

    Cerruti, S.J.

    1997-01-01

    The Construction Safety Program (CSP) for NIF sets forth the responsibilities, guidelines, rules, policies and regulations for all workers involved in the construction, special equipment installation, acceptance testing, and initial activation and operation of NIF at LLNL during the construction period of NIF. During this period, all workers are required to implement measures to create a universal awareness which promotes safe practice at the work site, and which will achieve NIF`s management objectives in preventing accidents and illnesses. Construction safety for NIF is predicated on everyone performing their jobs in a manner which prevents job-related disabling injuries and illnesses. The CSP outlines the minimum environment, safety, and health (ES&H) standards, LLNL policies and the Construction Industry Institute (CII) Zero Injury Techniques requirements that all workers at the NIF construction site shall adhere to during the construction period of NIF. It identifies the safety requirements which the NIF organizational Elements, construction contractors and construction subcontractors must include in their safety plans for the construction period of NIF, and presents safety protocols and guidelines which workers shall follow to assure a safe and healthful work environment. The CSP also identifies the ES&H responsibilities of LLNL employees, non-LLNL employees, construction contractors, construction subcontractors, and various levels of management within the NIF Program at LLNL. In addition, the CSP contains the responsibilities and functions of ES&H support organizations and administrative groups, and describes their interactions with the NIF Program.

  19. High voltage power network construction

    CERN Document Server

    Harker, Keith

    2018-01-01

    This book examines the key requirements, considerations, complexities and constraints relevant to the task of high voltage power network construction, from design, finance, contracts and project management to installation and commissioning, with the aim of providing an overview of the holistic end to end construction task in a single volume.

  20. 33 CFR 86.23 - Construction.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Construction. 86.23 Section 86.23 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY INLAND NAVIGATION RULES ANNEX III: TECHNICAL DETAILS OF SOUND SIGNAL APPLIANCES Bell or Gong § 86.23 Construction. Bells and gongs...

  1. KARATE WITH CONSTRUCTIVE LEARNING

    Directory of Open Access Journals (Sweden)

    Srikrishna Karanam

    2012-02-01

    Full Text Available Any conventional learning process involves the traditional hierarchy of garnering of information and then recall gathered information. Constructive learning is an important research area having wide impact on teaching methods in education, learning theories, and plays a major role in many education reform movements. It is observed that constructive learning advocates the interconnection between emotions and learning. Human teachers identify the emotions of students with varying degrees of accuracy and can improve the learning rate of the students by motivating them. In learning with computers, computers also should be given the capability to recognize emotions so as to optimize the learning process. Image Processing is a very popular tool used in the process of establishing the theory of Constructive Learning. In this paper we use the Optical Flow computation in image sequences to analyze the accuracy of the moves of a karate player. We have used the Lucas-Kanade method for computing the optical flow in image sequences. A database consisting of optical flow images by a group of persons learning karate is formed and the learning rates are analyzed in order to main constructive learning. The contours of flow images are compared with the standard images and the error graphs are plotted. Analysis of the emotion of the amateur karate player is made by observing the error plots.

  2. Thieno[3,2-c]pyran-4-one based novel small molecules: their synthesis, crystal structure analysis and in vitro evaluation as potential anticancer agents.

    Science.gov (United States)

    Nakhi, Ali; Adepu, Raju; Rambabu, D; Kishore, Ravada; Vanaja, G R; Kalle, Arunasree M; Pal, Manojit

    2012-07-01

    Novel thieno[3,2-c]pyran-4-one based small molecules were designed as potential anticancer agents. Expeditious synthesis of these compounds was carried out via a multi-step sequence consisting of few steps such as Gewald reaction, Sandmeyer type iodination, Sonogashira type coupling followed by iodocyclization and then Pd-mediated various C-C bond forming reactions. The overall strategy involved the construction of thiophene ring followed by the fused pyranone moiety and then functionalization at C-7 position of the resultant thieno[3,2-c]pyran-4-one framework. Some of the compounds synthesized showed selective growth inhibition of cancer cells in vitro among which two compounds for example, 5d and 6c showed IC(50) values in the range of 2.0-2.5 μM. The crystal structure analysis of an active compound along with hydrogen bonding patterns and molecular arrangement present within the molecule is described. Copyright © 2012 Elsevier Ltd. All rights reserved.

  3. Assessment of the neighborhood environmental effects of highway improvements through micronetwork simulation

    Energy Technology Data Exchange (ETDEWEB)

    Schimpeler, C.C. (Schimpeler--Corradino Associates, Louisville, KY); Corradino, J.C.; Siria, B.S.

    1978-01-01

    New Cut Road is a major arterial highway serving South Louisville. Until recently, it was a narrow two-lane highway of rural-type design carrying up to 14,000 vehicles per day under forced flow conditions. Then construction began to widen the road from Southside Drive to Old Third Street Road, as a result of Urban Corridor Demonstration Program funding. The impacts (traffic, noise, and air pollution) on the neighborhoods surrounding this widening have been measured through micronetwork simulation techniques. Traffic will be diverted from surrounding roads (up to 20 percent) to the widened New Cut facility, thereby eliminating ''over-capacity'' conditions in these facilities, adding several years' life. Further, expeditious movement of vehicles through the New Cut Road ''area of influence'' will have a beneficial, albeit small, effect on the local air and noise environment. New Cut Road will be a highly cost-effective, low-capital-intensive improvement.

  4. What's Out There Making Us Sick?

    International Nuclear Information System (INIS)

    Genuis, S.J.

    2012-01-01

    Throughout the continuum of medical and scientific history, repeated evidence has confirmed that the main etiological determinants of disease are nutritional deficiency, toxicant exposures, genetic predisposition, infectious agents, and psychological dysfunction. Contemporary conventional medicine generally operates within a genetic predestination paradigm, attributing most chronic and degenerative illness to genomic factors, while incorporating pathogens and psychological disorder in specific situations. Toxicity and deficiency states often receive insufficient attention as common source causes of chronic disease in the developed world. Recent scientific evidence in health disciplines including molecular medicine, epi genetics, and environmental health sciences, however, reveal ineluctable evidence that deficiency and toxicity states feature prominently as common etiological determinants of contemporary ill-health. Incorporating evidence from historical and emerging science, it is evident that a reevaluation of conventional wisdom on the current construct of disease origins should be considered and that new knowledge should receive expeditious translation into clinical strategies for disease management and health promotion

  5. Design and construction of hazardous waste landfill components

    International Nuclear Information System (INIS)

    Frano, A.J.; Numes, G.S.

    1985-01-01

    This paper discusses design and construction of two sections of a hazardous waste landfill at Peoria Disposal Company's hazardous waste management facilities in central Illinois. One section, an existing disposal facility, was retrofitted with leachate control and containment features for additional security. The second section, a new facility which had been previously permitted for development with a single clay liner, was modified to include a double liner and revised leachate collection system for additional security, and an all-weather construction and operation access ramp. The two sections of the landfill were granted a development permit allowing construction. An operating permit was granted after construction and certification by the designer allowing waste disposal operations. The sections will be accepting waste material at publication. Design and construction included: planning studies, design analyses, permitting, preparation of construction contract documents, construction assistance, monitoring construction, and certification

  6. Constructing Catalonia

    Directory of Open Access Journals (Sweden)

    Bill Philips

    2009-07-01

    Full Text Available Catalonia, in common with other nations, has long been concerned with the question of identity and difference. Its problematic relationship with Spain has led to an emphasis on differentiating itself from its larger neighbour (if we are to accept, as most Spaniards do not, that Catalonia is not Spain, a situation complicated by the loss of the Spanish colonies of Cuba and The Philippines in 1898, and the Spanish Civil War and subsequent dictatorship from 1936 to 1976. Beginning in the late nineteenth century, the construction of a Catalan identity followed a similar route to that taken by other European nations such as England, Ireland and, indeed, Spain, including an emphasis on rural values, activities and the countryside, and the conversion of specifically local traditions into national past times. It is only in the last ten years or so that this model of Catalan identity has been recognised for what it is – a model constructed and encouraged for and by specific nationalist political interests. Ironically, Catalonia’s identity abroad has also been constructed and manipulated for political purposes, but from quite a different perspective. Orwell’s /Homage to Catalonia/ (1938 narrates an extremely blinkered version of the Spanish Civil War which has achieved iconic status as a result of cold war politics. Subsequent portrayals of the Spanish Civil War – Valentine Cunningham’s /The Penguin Book of Spanish Civil War Verse/ (ed., Penguin, 1980, or Ken Loach’s 1995 film /Land and Freedom/ base their arguments unquestioningly on /Homage to Catalonia/, perpetuating a view of the nation’s recent history that is both reductive and inaccurate

  7. Construction Marketing: Developing a Reference Framework

    Directory of Open Access Journals (Sweden)

    Mahmood Mokhtariani

    2017-01-01

    Full Text Available Successful companies are strongly committed to marketing management. However, marketing is either misunderstood or completely neglected in many construction companies, mainly due to the difficulty of applying conventional marketing in the industry, accompanied by the lack of sufficient research on the nature of marketing and tailored marketing theories and strategies for the construction. This study attempts to fill a part of this gap by examining the nature of the construction industry from the marketing viewpoint and developing a comprehensive framework. A systematic investigation into the nature via a combination of Kotler’s product classification system and Lovelock’s classification criteria reveals that construction is an “industrial, project-based, and primarily service-oriented” (IPS product with specific characteristics from the marketing perspective. Based on this nature, a reference framework for strategic marketing planning is developed through a literature review based on grounded theory and using the focus group discussion as a refinement tool. The framework indicates that construction companies are involved in and should plan for three working fields—project-based activities, relationship marketing, and marketing mix-related functions. The findings provide a fundamental basis that helps researchers and practitioners gain a true understanding of the concepts and scope of construction marketing and draw a clear and practical roadmap for future work.

  8. Innovation, Procurement and Construction Industry Development

    Directory of Open Access Journals (Sweden)

    Geard de Valence

    2010-12-01

    Full Text Available The implications for analysis of innovation in construction of theoretical developments in industrial organisation are considered in this research, as an attempt to outline a new approach to construction innovation incorporating the ideas found in knowledge based, technology centred models. The paper firstly summarises characteristics of the construction industry, focusing on their effects on innovation, before surveying some of the ideas about the sources of innovation and the expansion and application of knowledge. Construction can be seen as an industry with limited scope for knowledge externalities, where the procurement methods used by the industry’s clients do not pay for innovation. The following discussion uses recent developments in the research on the economics of innovation and industrial organization theory, such as research intensity and the endogenous sunk costs in competitive, fragmented, low research intensity industries. The effects on R&D of procurement methods and on industry structure are discussed, with a focus on the appropriability of innovations and the role of the client on the Heathrow Terminal 5 project. The paper concludes that the procurement methods used for building and construction projects appears to be a determining factor in the level of innovation in the construction industry

  9. Socioecological Aspects of High-rise Construction

    Directory of Open Access Journals (Sweden)

    Eichner Michael

    2018-01-01

    Full Text Available In this article, the authors consider the socioecological problems that arise in the construction and operation of high-rise buildings. They study different points of view on high-rise construction and note that the approaches to this problem are very different. They also analyse projects of modern architects and which attempts are made to overcome negative impacts on nature and mankind. The article contains materials of sociological research, confirming the ambivalent attitude of urban population to high-rise buildings. In addition, one of the author’s sociological survey reveals the level of environmental preparedness of the university students, studying in the field of "Construction of unique buildings and structures", raising the question of how future specialists are ready to take into account socioecological problems. Conclusion of the authors: the construction of high-rise buildings is associated with huge social and environmental risks, negative impact on the biosphere and human health. This requires deepened skills about sustainable design methods and environmental friendly construction technologies of future specialists. Professor M. Eichner presents in the article his case study project results on implementation of holistic eco-sustainable construction principles for mixed-use high-rise building in the metropolis of Cairo.

  10. 7 CFR Exhibit B-2 to Subpart I of... - Breakdown of Construction Development for Determining Percentage Construction Completed

    Science.gov (United States)

    2010-01-01

    ... construction of basement or porch floors and steps whether wood or concrete. 17. Heating—finished 3 3 3 Subject... 7 Agriculture 13 2010-01-01 2009-01-01 true Breakdown of Construction Development for Determining Percentage Construction Completed B Exhibit B-2 to Subpart I of Part 1944 Agriculture Regulations of the...

  11. Tom Ford Construction, LLC Information Sheet

    Science.gov (United States)

    Tom Ford Construction, LLC (the Company) is located in Brentwood, Tennessee. The settlement involves renovation activities conducted at a property constructed prior to 1978, located in Nashville, Tennessee.

  12. Information resources for nuclear power construction

    International Nuclear Information System (INIS)

    Rozin, V.M.

    1987-01-01

    Problems of designing and introduction of data resources (in the form of magnetic carrier data) for the construction of NPP with the WWER-1000 type reactors are considered. It is suggested that the data resources should be supplied to the construction as independent production alongside with preliminary estimation and material resources. It is pointed out that the introduction of the data resource will permit to increase the efficiency of NPP construction management

  13. Construction and testing of JT-60

    International Nuclear Information System (INIS)

    Kishimoto, H.; Aikawa, H.; Oikawa, A.; Miya, N.; Suzuki, K.; Ozeki, T.; Tokutake, T.; Kunieda, S.; Hiruta, K.; Hosoda, R.

    1987-01-01

    The JT-60 project is reviewed in terms of design, R and D, construction, commissioning and project management. Design features of JT-60 have been refined and renewed through periodic assessments. Engineering targets have been achieved by R and D efforts. Construction and commissioning have progressed on schedule with intensive project management and control. JT-60 obtained high performance and has entered into the experimental phase after completion of machine construction. (orig.)

  14. The Chechen it-cleft construction

    NARCIS (Netherlands)

    Komen, E.R.

    2015-01-01

    This paper presents a biclausal construction in Chechen, arguing that it can be analyzed as an it-cleft. The construction consists of a main copula clause with a covert or pronominal subject, and a temporal complement that co-indexes with an adjunct position in a relative clause that does not form a

  15. Method of constructing an improved electrochemical cell

    Science.gov (United States)

    Grimes, Patrick G.; Einstein, Harry

    1984-10-09

    An electrochemical cell construction features a novel co-extruded plastic electrode in an interleaved construction with a novel integral separator-spacer. Also featured is a leak and impact resistant construction for preventing the spill of corrosive materials in the event of rupture.

  16. Construal operations of the English progressive construction

    DEFF Research Database (Denmark)

    Jensen, Kim Ebensgaard

    2011-01-01

    present paper provides an overview of construal operations that are likely to be at play in the construction of the aspectual and actional meaning components of the progressive construction. The discussion also involves instances of the progressive construction, which display low semantic compatibility...

  17. Construction experience at the Canonsburg UMTRA site

    International Nuclear Information System (INIS)

    Thiers, G.R.; Farnes, L.L.; Wathen, T.R.

    1985-01-01

    Construction of on-site stabilization for over 225,000 cubic yards of abandoned uranium mill tailings in Canonsburg, Pennsylvania, began in October 1983, and is scheduled to be completed in December 1985. This paper describes selected construction experience through October 1984. The following selected events and construction items are discussed in this paper: 1. Construction and operation of a 36,000-square foot, fabric-lined sedimentation basin, including difficulties associated with installation of the liner; 2. Assembly and start-up of the contaminated water treatment plant; 3. Construction of the encapsulation cell test fills, to confirm the performance specification governing the compaction; 4. Excavation, relocation, and placement of contaminated materials, including moisture control and density testing of the radioactive materials; 5. Construction difficulties, including disposition of local leachate from the abandoned industrial complex and an increase in the volume of contaminated material to be encapsulated

  18. Organisational Culture in Construction: An Employee Perspective

    Directory of Open Access Journals (Sweden)

    Raufdeen Rameezdeen

    2012-11-01

    Full Text Available A large number of stakeholders in construction projects makes the construction industry prone to disputes. The historical separation between design and construction add to this phenomenon by having a consultant for design and a contractor for construction. Communication breakdown, frequently, is the first sign of problems, notably in the relationship between the Contractor and the Consultant. Therefore, it appears that the split between design and construction has given rise to two separate cultures in the construction industry. This paper attempts to identify whether there is a difference in organisational culture between Consultants and Contractors taken as two groups and determine whether a specific attribute was related to the cultural differences between the two entities. Based on case studies it was found that consultants are biased towards Clan culture while contractors are biased towards Market culture. However, both groups show similar affinity to Adhocracy and Hierarchy cultures.

  19. Construction work management for nuclear power stations

    International Nuclear Information System (INIS)

    Yoshikawa, Yuichiro

    1982-01-01

    Nuclear power generation is positioned as the nucleus of petroleum substitution. In the Kansai Electric Power Co., efforts have been made constantly to operate its nuclear power plants in high stability and safety. At present, Kansai Electric Power Co. is constructing Units 3 and 4 in the Takahama Nuclear Power Station in Fukui Prefecture. Under the application of the management of construction works described here, both the nuclear power plants will start operation in 1985. The activities of Kansai Electric Power Co. in the area of this management are described: an outline of the construction works for nuclear power stations, the management of the construction works in nuclear power stations (the stages of design, manufacturing, installation and test operation, respectively), quality assurance activities for the construction works of nuclear power plants, important points in the construction work management (including the aspects of quality control). (J.P.N.)

  20. RA Construction KC, LLC Information Sheet

    Science.gov (United States)

    RA Construction KC, LLC (the Company) is located in Gladstone, Missouri. The settlement involves renovation activities conducted at a property constructed prior to 1978, located in Kansas City, Missouri.

  1. APPLIED ORGANIZATION OF CONSTRUCTION

    Directory of Open Access Journals (Sweden)

    Kievskiy Leonid Vladimirovich

    2017-03-01

    Full Text Available Applied disciplines in the sphere of construction which are engaged in the solution of vital macroeconomical problems (the general trend of development of these disciplines is the expansion of problematics and mutual integration are considered. Construction organization characteristic at the present stage as a systems engineering discipline covering the investment process of creation of real estate items, is given. The main source of current research trends for applied sciences (socio-economic development forecasts, regional and local programs is determined. Interpenetration and integration of various fields of knowledge exemplified by the current interindustry problem of blocks renovation organization of existing development, is demonstrated. Mathematical model of wave construction (for the period of deployment is proposed. Nature of dependence of the total duration of renovation on the limit of annual input and coefficient of renovation, is established. Overall structure of the Moscow region housing market is presented, and approaches to definition of effective demand are proposed.

  2. Impact of Construction Waste Disposal Charging Scheme on work practices at construction sites in Hong Kong

    International Nuclear Information System (INIS)

    Yu, Ann T.W.; Poon, C.S.; Wong, Agnes; Yip, Robin; Jaillon, Lara

    2013-01-01

    Highlights: ► A significant reduction of construction waste was achieved at the first 3 years of CWDCS implementation. ► However, the reduction cannot be sustained. ► Implementation of the CWDCS has generated positive effects in waste reduction by all main trades. - Abstract: Waste management in the building industry in Hong Kong has become an important environmental issue. Particularly, an increasing amount of construction and demolition (C and D) waste is being disposed at landfill sites. In order to reduce waste generation and encourage reuse and recycling, the Hong Kong Government has implemented the Construction Waste Disposal Charging Scheme (CWDCS) to levy charges on C and D waste disposal to landfills. In order to provide information on the changes in reducing waste generation practice among construction participants in various work trades, a study was conducted after 3 years of implementation of the CWDCS via a structured questionnaire survey in the building industry in Hong Kong. The study result has revealed changes with work flows of the major trades as well as differentiating the levels of waste reduced. Three building projects in the public and private sectors were selected as case studies to demonstrate the changes in work flows and the reduction of waste achieved. The research findings reveal that a significant reduction of construction waste was achieved at the first 3 years (2006–2008) of CWDCS implementation. However, the reduction cannot be sustained. The major trades have been influenced to a certain extent by the implementation of the CWDCS. Slight improvement in waste management practices was observed, but reduction of construction waste in the wet-finishing and dry-finishing trades has undergone little improvement. Implementation of the CWDCS has not yet motivated subcontractors to change their methods of construction so as to reduce C and D waste.

  3. Impact of Construction Waste Disposal Charging Scheme on work practices at construction sites in Hong Kong

    Energy Technology Data Exchange (ETDEWEB)

    Yu, Ann T.W., E-mail: bsannyu@polyu.edu.hk [Department of Building and Real Estate, The Hong Kong Polytechnic University, Hung Hom, Kowloon (Hong Kong); Poon, C.S.; Wong, Agnes; Yip, Robin; Jaillon, Lara [Department of Civil and Structural Engineering, Hong Kong Polytechnic University, Hung Hom, Kowloon (Hong Kong)

    2013-01-15

    Highlights: Black-Right-Pointing-Pointer A significant reduction of construction waste was achieved at the first 3 years of CWDCS implementation. Black-Right-Pointing-Pointer However, the reduction cannot be sustained. Black-Right-Pointing-Pointer Implementation of the CWDCS has generated positive effects in waste reduction by all main trades. - Abstract: Waste management in the building industry in Hong Kong has become an important environmental issue. Particularly, an increasing amount of construction and demolition (C and D) waste is being disposed at landfill sites. In order to reduce waste generation and encourage reuse and recycling, the Hong Kong Government has implemented the Construction Waste Disposal Charging Scheme (CWDCS) to levy charges on C and D waste disposal to landfills. In order to provide information on the changes in reducing waste generation practice among construction participants in various work trades, a study was conducted after 3 years of implementation of the CWDCS via a structured questionnaire survey in the building industry in Hong Kong. The study result has revealed changes with work flows of the major trades as well as differentiating the levels of waste reduced. Three building projects in the public and private sectors were selected as case studies to demonstrate the changes in work flows and the reduction of waste achieved. The research findings reveal that a significant reduction of construction waste was achieved at the first 3 years (2006-2008) of CWDCS implementation. However, the reduction cannot be sustained. The major trades have been influenced to a certain extent by the implementation of the CWDCS. Slight improvement in waste management practices was observed, but reduction of construction waste in the wet-finishing and dry-finishing trades has undergone little improvement. Implementation of the CWDCS has not yet motivated subcontractors to change their methods of construction so as to reduce C and D waste.

  4. Enhancing quality of construction on nuclear facilities

    International Nuclear Information System (INIS)

    Buchert, K.P.

    1984-01-01

    From the author's viewpoint and the viewpoint of others, the quality of construction on both nuclear projects and many other non-nuclear projects has decreased. The trend toward recent QA and QC methods of contractors doing their own inspection has not only tended to reduce the quality of construction, but also has discouraged qualified inspectors from accepting positions where this type of QA and QC is practiced. In addition, the methods have decreased the desired interaction between design engineers and construction management. The paper contains detailed recommendations on how the quality of construction can be enhanced on nuclear projects. It is also shown that construction quality must be obtained by different methods than those used to obtain manufacturing quality

  5. A brief review of the construction aggregates market

    Science.gov (United States)

    Willett, Jason Christopher

    2012-01-01

    The U.S. Geological Survey defines the construction aggregates industry as those companies that mine and process crushed stone and/or construction sand and gravel. Aggregates have been used from the earliest times of our civilization for a variety of purposes - construction being the major use. As construction aggregates, crushed stone and construction sand and gravel are the basic raw materials used to build the foundation for modern society. The widespread use of construction aggregates is the result of their general availability throughout the country and around the world along with their relatively low cost. Although construction aggregates have a low unit value, their widespread use makes them major contributors to, and indicators of, the economic well-being of the nation.

  6. Construction Minerals Operations

    Data.gov (United States)

    Department of Homeland Security — This map layer includes construction minerals operations in the United States. The data represent commodities covered by the Minerals Information Team (MIT) of the...

  7. A proof theory for constructive default logic

    NARCIS (Netherlands)

    Y-H. Tan (Yao-Hua)

    1993-01-01

    textabstractWe present what we call Constructive Default Logic (CDL) - a default logic in which the fixed-point definition of extensions is replaced by a constructive definition which yield so-called constructive extensions. Selection functions are used to represent explicitly the control of the

  8. Internet-based Interactive Construction Management Learning System.

    Science.gov (United States)

    Sawhney, Anil; Mund, Andre; Koczenasz, Jeremy

    2001-01-01

    Describes a way to incorporate practical content into the construction engineering and management curricula: the Internet-based Interactive Construction Management Learning System, which uses interactive and adaptive learning environments to train students in the areas of construction methods, equipment and processes using multimedia, databases,…

  9. Constructive Empiricism and Model Nominalism. | Udokang | Sophia ...

    African Journals Online (AJOL)

    James Ladyman has argued that constructive empiricism entails modal realism, and that this renders constructive empiricism untenable. We maintain that constructive empiricism is compatible with modal nominalism. Although the central term “observable” has been analyzed in terms of counterfactuals, and in general ...

  10. Bioengineering pediatric scaffold-free auricular cartilaginous constructs.

    Science.gov (United States)

    Akbari, Pedram; Waldman, Stephen D; Cushing, Sharon L; Papsin, Blake C; Propst, Evan J; Weber, Joanna F; Yeger, Herman; Farhat, Walid A

    2017-05-01

    The use of exogenous materials as scaffolds in cartilage tissue engineering has limited the clinical application of resultant constructs due to the risk of postoperative complications. In an effort to minimize such complications, we aim to generate human, scaffold-free auricular cartilaginous constructs. Laboratory study using pediatric auricular cartilage. Remnant, normal pediatric auricular cartilage samples that would have otherwise been discarded were collected and digested to free cells. Harvested cells were cultured and expanded in vitro for two passages and plated as micromass cultures. The culture medium was replaced with a chemically defined chondrogenic medium, and cellular monolayers surrounding micromass cultures were continuously scraped off. Constructs were allowed to mature for a period of 8 weeks. Micromass constructs showed mechanical stability and structurally resembled native auricular tissue, with a perichondrium-like layer of cells surrounding the inner cartilaginous zone. Constructs accumulated equivalent sulphated glycosaminoglycan and 50% of collagen content compared to native auricular cartilage by mass, while displaying 156% more cellularity. High-density micromass cultures of pediatric auricular chondrocytes can generate stable cartilaginous constructs following prolonged chondrogenic inductions in vitro. This technique is an essential step toward the development of three-dimensional constructs to recreate clinically applicable auricular cartilaginous constructs. NA. Laryngoscope, 127:E153-E158, 2017. © 2016 The American Laryngological, Rhinological and Otological Society, Inc.

  11. Feedback as Real-Time Constructions

    Science.gov (United States)

    Keiding, Tina Bering; Qvortrup, Ane

    2014-01-01

    This article offers a re-description of feedback and the significance of time in feedback constructions based on systems theory. It describes feedback as internal, real-time constructions in a learning system. From this perspective, feedback is neither immediate nor delayed, but occurs in the very moment it takes place. This article argues for a…

  12. Advanced construction methods for new nuclear power plants

    International Nuclear Information System (INIS)

    Bilbao y Leon, Sama; Cleveland, John; Moon, Seong-Gyun; Tyobeka, Bismark

    2009-01-01

    The length of the construction and commissioning phases of nuclear power plants have historically been longer than for conventional fossil fuelled plants, often having a record of delays and cost overruns as a result from several factors including legal interventions and revisions of safety regulations. Recent nuclear construction projects however, have shown that long construction periods for nuclear power plants are no longer the norm. While there are several inter-related factors that influence the construction time, the use of advanced construction techniques has contributed significantly to reducing the construction length of recent nuclear projects. (author)

  13. On how to do construction management communications engineering

    Institute of Scientific and Technical Information of China (English)

    Zhang Zhi

    2014-01-01

    In the communication construction projects, improving the efectivenes of project management is an important part of the quality asurance program. The efectivenes of the communication and construction project management is afected by many factors. Therefore, the discusion of communication construction project management efectivenes is good for improving the quality of projects of great significance. This paper analyzes the characteristics and problems of communication construction projects, reflecting the importance of project management; then discused the factors afecting the efectivenes of project management; finaly targeted to improve the communication of construction project management efectivenes propose specific methods to ensure communication quality of construction projects.

  14. Technology Management on Large Construction Projects

    DEFF Research Database (Denmark)

    Bonke, Sten

    The aim of this text is to discuss and to develop the concept of technology management in relation to the empirical field of construction projects. In the first of the two main sections central theories and their derived assertions concerning technology management criteria are summed up...... Fixed Link construction project. Finally on this basis the concluding remarks are pointing to the main theoretical problems and their practical implementations for the introduction of a technology management discipline in construction....... in a schematic theoretical framework. Hereafter the general characteristics of construction are examined from the point of view of serving as an empirical field for technology management analysis. In the second section the technology management theme is associated with the empirical properties of the Great Belt...

  15. Rapid construction of concrete pressure vessels

    International Nuclear Information System (INIS)

    Limbert, D.; Weatherseed, D.C.

    1989-01-01

    This paper opens with a general description of the concrete pressure vessel followed by a more detailed examination of the critical elements of the construction, including choice of methods and plant which were selected to ensure its rapid construction. The pressure vessel construction cannot be treated in isolation, because it is very closely linked with its surrounding structures - namely the reactor hall which surrounds it and the charge hall which tops it, as will be seen in the context of this paper. Rate of progress of construction is not entirely in the civil contractor's hands because so many of the operations affecting the civil works are of a mechanical nature, hence a very close liaison and understanding amongst all contractors concerned was of the utmost importance. (author)

  16. Additive Construction with Mobile Emplacement (ACME)

    Science.gov (United States)

    Vickers, John

    2015-01-01

    The Additive Construction with Mobile Emplacement (ACME) project is developing technology to build structures on planetary surfaces using in-situ resources. The project focuses on the construction of both 2D (landing pads, roads, and structure foundations) and 3D (habitats, garages, radiation shelters, and other structures) infrastructure needs for planetary surface missions. The ACME project seeks to raise the Technology Readiness Level (TRL) of two components needed for planetary surface habitation and exploration: 3D additive construction (e.g., contour crafting), and excavation and handling technologies (to effectively and continuously produce in-situ feedstock). Additionally, the ACME project supports the research and development of new materials for planetary surface construction, with the goal of reducing the amount of material to be launched from Earth.

  17. Construction industry accidents in Spain.

    Science.gov (United States)

    Camino López, Miguel A; Ritzel, Dale O; Fontaneda, Ignacio; González Alcantara, Oscar J

    2008-01-01

    This paper analyzed industrial accidents that take place on construction sites and their severity. Eighteen variables were studied. We analyzed the influence of each of these with respect to the severity and fatality of the accident. This descriptive analysis was grounded in 1,630,452 accidents, representing the total number of accidents suffered by workers in the construction sector in Spain over the period 1990-2000. It was shown that age, type of contract, time of accident, length of service in the company, company size, day of the week, and the remainder of the variables under analysis influenced the seriousness of the accident. IMPACT ON INJURY PREVENTION: The results obtained show that different training was needed, depending on the severity of accidents, for different age, length of service in the company, organization of work, and time when workers work. The research provides an insight to the likely causes of construction injuries in Spain. As a result of the analysis, industries and governmental agencies in Spain can start to provide appropriate strategies and training to the construction workers.

  18. TRANSITIVITY AND THE BA CONSTRUCTION

    Directory of Open Access Journals (Sweden)

    Pei-Jung Kuo

    2010-06-01

    Full Text Available In this paper, I discuss the legitimacy of positing a Transitivity Projection (= TrP cf. Bowers 1993, 1997, 2001 and 2002 in the BA construction in Mandarin Chinese. BA has been proposed to be a semantically-bleached verb, inserted in the v position (Huang 1997 and Lin 2001. Several pieces of evidence such as manner adverbial placement (cf. Huang, Li and Li 2009 and GEI-insertion (cf. Tang 2001 indicate that there must be a functional projection between the vP and VP to host the BA NP. I propose that a TrP is probably the most apt candidate for the XP. I also argue, in contrast to the proposal by Huang, Li and Li (2009, that the present proposal which employs a TrP captures most of the properties of the BA construction. A comparison with the structure of the BEI construction also shows that the TrP proposal fits into the general picture of current linguistic theory on transitive constructions without extra stipulations.

  19. Development of new construction technologies for nuclear power plant

    International Nuclear Information System (INIS)

    Kawamata, Susumu; Itoh, Daisuke; Ichizono, Katsuyuki

    1995-01-01

    In order to proceed rationally with the construction of a nuclear power station, the followings are the subject to solve beside reducing the construction cost: shortening the construction period, improving the quality, and securing safety in the construction work. As a measure to solve the matters, we correctly construct the plant mainly applying 'all-weather proof construction method' and 'pre-assembled large-block construction method'. Furthermore, as the plant construction control system, we perform a construction work applying the design change management system, pre-assessment for safety, and the whole facility check. As a result of our effort, it was attained that when we compare the matured plant with the first unit, the construction cost is reduced by 30%, the construction period is shortened by 12 months, site manpower is decreased by 30%, and the plant had no sudden shutdowns even during the trial operation period. (author)

  20. THE NICHE CONSTRUCTION PERSPECTIVE: A CRITICAL APPRAISAL*

    Science.gov (United States)

    Scott-Phillips, Thomas C; Laland, Kevin N; Shuker, David M; Dickins, Thomas E; West, Stuart A

    2014-01-01

    Niche construction refers to the activities of organisms that bring about changes in their environments, many of which are evolutionarily and ecologically consequential. Advocates of niche construction theory (NCT) believe that standard evolutionary theory fails to recognize the full importance of niche construction, and consequently propose a novel view of evolution, in which niche construction and its legacy over time (ecological inheritance) are described as evolutionary processes, equivalent in importance to natural selection. Here, we subject NCT to critical evaluation, in the form of a collaboration between one prominent advocate of NCT, and a team of skeptics. We discuss whether niche construction is an evolutionary process, whether NCT obscures or clarifies how natural selection leads to organismal adaptation, and whether niche construction and natural selection are of equivalent explanatory importance. We also consider whether the literature that promotes NCT overstates the significance of niche construction, whether it is internally coherent, and whether it accurately portrays standard evolutionary theory. Our disagreements reflect a wider dispute within evolutionary theory over whether the neo-Darwinian synthesis is in need of reformulation, as well as different usages of some key terms (e.g., evolutionary process). PMID:24325256