• Title/Summary/Keyword: contractor

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BIM based Design Optimization and Constructability Improvement for Adoption of Pre-construction Service. (프리컨스트럭션 서비스 도입을 위한 BIM 기반 설계 최적화 및 시공성 검토)

  • Lee, Chang-Hee;Lee, Jeong-Ho
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2017.11a
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    • pp.187-188
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    • 2017
  • Korean government is trying to adopt 'CM at Risk(CMR)' method to solve some problems of traditional project delivery method such as cost increase, delay, low quality. Pre-construction service(PCS) is a project management methodology of CMR and BIM is the best tool for efficient PCS execution. PCS is consisted of several main items such as Target costing, Cost trending, GMP, Design optimization, Constructability review and Productivity. The purpose of this research is to analyse contractor's PCS application case result and to find improvement items.

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A Study of Internet Use by U.S. General Contractors

  • Park Hee-Sung
    • Korean Journal of Construction Engineering and Management
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    • v.4 no.1 s.13
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    • pp.75-80
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    • 2003
  • Internet use in the world is rapidly growing. The Internet Is affecting all aspects of life, as we know it. The world of business will probably be changed forever. The construction industry is a major part of the business world It is also seeing changes because of the Internet. This study is to provide the construction industry with an understanding of the current use of the Internet by U.S. general contractors. This study consisted of surveying construction general contractors with regards to their current and future Internet use. The study shows that Internet use by U.S. general contractors is the highest at what was identified as the support level . Use at the corporate level was second, while use at the project level was lower. This study demonstrates that companies of every size are using the Internet somehow in order to remain competitive and to enable improvement of performance.

Improvement of Apportioning Responsibility for the Time Extension in Construction Projects (건설공사 공기연장 책임구분의 문제점 및 개선방안 제시)

  • Kim, Jong-Han;Kim, Kyung-Rai
    • Proceedings of the Korean Institute Of Construction Engineering and Management
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    • 2007.11a
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    • pp.60-67
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    • 2007
  • Cases of the time extension have continuously transpired in the public construction projects. The potential of economical loss and claims is increased because the concerned parties such as an owner or a contractor have not properly performed their own responsibility for the time extension. Therefore, this paper aimed to improvement of apportioning responsibility for the time extension in construction projects.

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Greenhouse Gas Management Policy during Construction Execution Phase -Focused on Green Building Rating Systems and Japanese Case- (건축물 시공단계에서의 온실가스 배출 관리 방안 -국내외 친환경 인증제도와 일본 현장의 대응 방안을 중심으로-)

  • Song, Sang Hoon
    • KIEAE Journal
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    • v.10 no.5
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    • pp.139-150
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    • 2010
  • Until now, the eco-friendly construction (green construction) has been focused on reducing environmental impacts in use(operation and maintenance) phase. Considering the environmental influence along the life cycle of construction project, the impact in execution phase is rather lower than that in use phase. However, that impact is thought to be greatly decreased by well-organized activities. Based on its urgency and requirement for timely action, this study aimed to discuss the greenhouse gas (GHG) reduction plan in execution phase from a broad perspective. To achieve this purpose, the green building rating systems in domestic and foreign countries have been reviewed, and the practice in Japan was investigated. In order to improve current on-site greenhouse gas management, the integration among construction phases, participants, and environmental factors, and institutional supports are required as well as the contractor's efforts.

Design and Performance Analysis of a Small Circulating Water Channel for Ocean Engineering (해양공학용 소형 회류수조 설계 및 성능분석)

  • Yim, Young-Bae;Jeong, Uh-Cheul;Park, Chan-Won;Hong, Ki-Sup
    • Proceedings of the Korea Committee for Ocean Resources and Engineering Conference
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    • 2003.05a
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    • pp.198-202
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    • 2003
  • A small circulating water channel (CWC) for experiments ocean engineering is designed and made through the co-work of a company, MESTEC, and a college, Inha Technical Research Institute. General function of the elements of CWC are explained. The velocities in the test section are measured and analysed to estimate the performance of the CWC. The result of the velocity distribution is acceptable for experiments of ocean engineering.

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독일 해군의 차세대 212급 잠수함

  • Lee, Gi-Seon
    • Defense and Technology
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    • no.7 s.233
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    • pp.60-69
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    • 1998
  • 독일 HDW조선소의 Bonn 지사장으로 근무중인 Udo Ude씨는 209급 잠수함 해외수출 성공사례를 다음과 같이 분석하였다. -1970년 독일해군용 206급 계약시 잠수함을 해군에 인도하기 전까지의 모든 과정을 조선소가 직접 책임지고 수행토록 하는 General Contractor Principle(총괄계약자 원칙)에 의해 확보된 기술인력, 자재/장비 공급원 발굴, 축적된 장비간 연동과 체계통합 기술 및 경험 –대부분의 탑재 장비를 국내 방산업체로부터 조달할 수 있는 탄탄한 국내 기술력 –매 신규사업마다 성능향상을 위한 과제선정 및 계속적인 연구 –정부 소유 시험시설 및 장비 활용과 제반 기술관리에 있어서 민.관.군의 적극적이고 긴밀한 지원체제 구축 이러한 성공사례 분석에 독일 현지에서 느낀 필자의 경험소감을 추가하면 다음과 같다. –규정을 잘 지킬 뿐만 아니라 타인의 잘못을 즉시 일깨워 주는 준법정신 및 고발정신 -2-3년 후의 휴가계획까지 수립하여 준비할 정도의 처절한 사전계획 및 준비정신 –불결한 것과 게으름을 참지 못하는 청결성 및 근면성 –누구든지 원하면 경제적인 부담없이 평생동안 공부할 수 있는 교육제도 –게르만족이 우월하다는 내면적 자부심 –작은 일이라도 모여서 토의하고 결론을 도출하기 좋아하는 공동체 의식 –약속을 철저히 지키는 정직성 –과거의 사실이나 유물을 철저히 보존하는 역사의식 –모든 분야에서 철저하게 운용되는 Meister(장인)제도 등

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A Study of Technical Standard Making from Governance Perspective: The Case of Master Spec. in Electrical Construction (기술 표준 제정과 거버넌스 접근법: 전기공사 마스터 스펙 사례)

  • Cho, Hyun-Suk
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.61 no.5
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    • pp.770-776
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    • 2012
  • For a few recent years, KECA(Korea Electrical Contractor Association) has promoted a project to establish an electrical construction specification called Master Spec. This paper analyses the characteristics of standards-making process of the Master Spec. as an umbrella technical standard in electrical construction industry in Korea. This paper argues that even if the Master Spec. is recognized to be technical standards, the standards-making process involves both technical and social practices when viewed from social construction theory and governance perspective. This aspect of social practices in technical standards making should be well understood because various stakeholders in terms of interests, resources, and motives try to influence the process positively and negatively. KECA in responsible for enactment of the Mater Spec. should be very thoughtful in building consensus first of all among electrical contractors, managing relationship with concerned government officials, and dealing with potential deviant groups as well as in pooling expertises and developing technical knowledge needed for designing technical specification.

A Study on Preconstruction Process in Support of Lean Project Delivery System - Case Study of Children's Hospital at Bellevue, Wa, U.S.A. - (린 건설 관리 방식의 공사 전 설계 진행에 관한 연구 -미국 벨뷰 어린이 병원 사례 조사-)

  • Kim, Yong-Woo;Kim, Kwang-Ho
    • Journal of The Korea Institute of Healthcare Architecture
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    • v.14 no.4
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    • pp.47-54
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    • 2008
  • Preconstruction process in a lean project delivery system was studied in one large healthcare project working for a general contractor. Researchers joined a new lean delivery project for approximately six weeks and participated in preconstruction process including design coordination, management coordination, and target costing while concurrently interviewing other project participants and employees, recording activity in meetings, and otherwise observing the process. The preconstruction process in lean project delivery system, called integrated project design, showed many benefits such as brining expertise of downstream players (i.e., mechanical and electrical contractors) into the design phase. However, lack of leadership and lack of design-integrator blocked the successful application of a new concept of design process.

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A Study on the Optimization Effectiveness of Risk Assessment in Construction Industry (건설업 위험성 평가 실효성을 위한 최적화 연구)

  • Paek, Chung Hyeun;Cho, Ur Ryong
    • Journal of the Korea Safety Management & Science
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    • v.17 no.3
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    • pp.15-22
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    • 2015
  • The risk assessment carried out on the construction site at the beginning of the implementation depends on the subjective judgment of risk of general contractor and subcontractors, whose opinion about frequency and intensity of risk is different. In this paper, research the awareness of general contractors and subcontractors about process of risk assessment at the construction site and its effectiveness. Researching of the main factors "frequency", "intensity" which determines the degree of risk gives the opportunity to find an option for improving the effective implementation of risk assessment.

The introduction of the evaluation method for welded joints in car body structure by the manual analysis (수계산을 통한 철도차량의 차체 용접이음부 강도 평가)

  • Jeong, Sang-Wung;Kim, Jae-Woong;Jang, Gil-Soo
    • Proceedings of the KSR Conference
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    • 2008.11b
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    • pp.1697-1702
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    • 2008
  • The objective of the review is to introduce the evaluation method of welding joint designs by using forces extracted from FE models. This evaluation method is currently being used for the Southeastern Pennsylvania Transportation Authority (SEPTA) project in the United States by request of the customer Engineer. The evaluation method was applied to critical joints connected by Fillet or Partial Joint Penetration (PJP) welds in car body structure for SEPTA project. The additional manual analysis is required based on the fact that Technical Specification in the United States requires the Contractor to apply Complete Joint Penetration (CJP) welds to all structural connections in Car body. However, in the car body design for Septa project there are some areas where CJP welds are not applied due to structural and manufacturing problems.

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