• 국제학술발표논문집
• /
• The 9th International Conference on Construction Engineering and Project Management
• /
• pp.42-49
• /
• 2022

In recent years, Owner, Architects, and Contractor are increasingly collaborating with each other from pre construction phase in construction projects, which is called Early Contractor Involvement (ECI). In Japan, the ECI method has been introduced in several public building projects since 2015. The purpose of this study is mainly to clarify the characteristics of the ECI method in Japan and to compare the contract clauses of the ECI method in the UK and the USA. The results of the survey are as follows. (1) the ECI method was supposed to make it possible to achieve appropriate quality, cost, and construction period by reflecting Contractor's technology and know-how in the design documents and specifications. (2) According to the database, there were 27 cases of the ECI method in Japan from 2015 to 2021, of which 13 cases for which bidding information could be obtained had a variety of technical proposals, mainly VE proposals, depending on the project characteristics. (3), Japan's ECI method has very much in common with SBC + PCSA in the UK. On the other hand, ECI Method in Japan differs from in the UK in that Owner, Architect, and Contractor enter into a partnership agreement, which is similar to ConsensusDocs CD541 in the USA. (4) The ECI method in Japan has the following problems: Owner depends on Contractor for cost control, the division of roles among project members is complicated, and more work from Owner than the DBB method are required.

• 융합경영연구
• /
• 제9권5호
• /
• pp.15-25
• /
• 2021

Purpose: In the Korean railway infrastructure process, contractors and operators are involved at a later stage, which results in significant inefficiency. This study examines the benefits of early stakeholder involvement in Korean railway infrastructure projects and provides practical guidelines. Design, data and methodology: Literatures and foreign cases are analyzed. Building on the new product development model, we derive propositions explaining the relationship between early stakeholder involvement and the performance of Korean railway infrastructure project. Results: Major propositions include that early involvement of contractor has a positive effect on the project performance by shortening the infrastructure construction period and that early involvement of railway operator has a positive effect on the project performance by improving the effectiveness of railway infrastructure. Four requirements for the success of early stakeholder involvement are addressed. Conclusions: This study suggests that early stakeholder involvement shortens the construction period and improves railway infrastructure effectiveness. Academic contribution is to present the framework on railway infrastructure projects as holistic interactions among stakeholders. Practical contribution is to provide railway policy makers and other business practitioners with policy guidelines to improve railway infrastructure project process and to recommend an open access to relevant data.

• 건설관리
• /
• 제19권4호
• /
• pp.34-36
• /
• 2018

• 국제학술발표논문집
• /
• The 9th International Conference on Construction Engineering and Project Management
• /
• pp.25-32
• /
• 2022

As a project delivery method, Design-Build (DB) has provided owner, architect, and contractor groups with a process of early design and rapid construction for the past three decades. Although there are many benefits to using standard DB, dissatisfaction has arisen due to limitations to innovate, limited owner involvement during design, and often lengthy procurement. Progressive Design-Build (PDB) has become an appealing alternative providing benefits not seen with standard DB. This paper investigates how PDB impacts a project and how it compares against standard DB; it also presents a proposed framework for evaluating the owner's responsibility and assessment of a project, which we named the "Four Pillars of Project Success". The four pillars are defined with respect to an owner's responsibility and assessment of a project, including project predictability, project risk, project schedule, and project cost. We conducted a literature review, examined several public project case studies, analyzed PDB project information collected by the Design-Build Institute of America (DBIA), and held stakeholder interviews with owners, contractors, and architects who have used both PDB and standard DB. This paper offers insight into PDB's structure and outcomes so an owner group can make an informed decision when considering PDB as their next construction contracting method.

• 한국건설관리학회논문집
• /
• 제16권4호
• /
• pp.50-59
• /
• 2015

한국 건설 기업들의 해외 진출이 기하급수적으로 늘어나고 있지만 프로젝트를 수행함에 있어 사업의 수익률은 대기업과 경험이 부족한 중소기업을 비교하였을 때 큰 차이가 나타난다(대기업 5건 중 1건 적자, 중소기업 3건 중 1건 적자 공사). 또한 경험이 부족한 중소, 중견 기업들, 특히 하도급 업체에게는 프로젝트 참여시 사업의 적절성을 판단하기란 어려우며 그에 따른 수익률 또한 예측하기 어렵다. 이에 본 연구는 중소/중견 업체, 특히 하도급 업체 관점에서 해외 건설공사 진출 시 수익률에 영향을 미치는 영향인자를 도출하기 위해 1965년부터 시행된 8,637건의 해외건설 준공데이터 및 문헌고찰 기반으로 수익률에 영향을 미치는 10개 인자를 도출 후 다중회귀분석을 통해 영향인자 간 가중치를 도출하였다. 이를 기반으로 사례기반 추론 기법을 이용하여 수익률 예측 모델을 개발하였으며, Type1 &Type2 error 분석을 통해 검증 결과 11%의 오차율을 보였다. 이러한 수익성 예측 모델을 활용하여 국내 건설 하도급업체들은 해외건설공사 진출 시 해당 프로젝트의 수익성 분포를 사전에 확인하여 양질의 프로젝트를 선별하고, 사업 참여의 의사결정에 중요한 참고자료가 될 것을 기대한다.