• 국제학술발표논문집
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• The 2th International Conference on Construction Engineering and Project Management
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• pp.424-432
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• 2007

The last twenty-five years have seen dramatic improvements in and widespread use of IT to describe and document the work of the many disciplines involved in construction projects. Iran is a developing country and construction is a basic factor of developing too. Hence, the country needs to a special programming for construction of buildings, structures and infrastructures. Many parts of Iran are located in highly seismic zones and structures must be constructed safe e.g., according to recent seismic codes. In this paper opportunities of IT in construction industry of Iran are investigated in three categories. Pre-construction phase, construction phase and earthquake disaster mitigation are studied. Studies show that information technology can be used in these items for reducing the losses and increasing the benefits. Both government and private sectors must contribute to this strategic project for obtaining the best result.

• 대한건축학회연합논문집
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• 제20권6호
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• pp.97-104
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• 2018

Recently, as the shape and function of high-rise buildings have become more complex, engineering for reflecting the constructability in the design phase has the increasing importance. However, engineering tasks are not performed at the appropriate level and timing in most projects, which leads to inefficient work such as design changes and reworks. Hence, this study investigated the constructability knowledge, design elements, and supporting tools required to conduct engineering tasks related to temporary work at the design phase, and also analyzed the relationship between these factors using the correlation analysis. As a result, when the engineering tasks are applied in the design phase, constructability knowledge related to 'construction method and process' is the most important and the design factor related to 'layout/arrangement' should be considered as the most important factor. Based on the results of this study, the project participants can efficiently use necessary constructability knowledge during the design phase and facilitate effective decision-making and design alternatives for enhancing constructability.

• 한국건축시공학회지
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• 제13권5호
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• pp.506-512
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• 2013

Since the amendment of the law on the private sector investment in social infrastructure in January of 2005, the government has been actively promoting Build-Transfer-Lease (BTL) projects. Notably, most new educational facilities have been built as BTL projects. For these facilities, the unit cost per unit area has been applied to predict construction costs. However, since construction costs are mostly managed after the detailed design phase, the costs can be estimated incorrectly. For this reason, cost management is needed in the planning phase, with a sound approximate estimate to prevent the wasteful use of funds. To address this shortcoming, this study aims to develop a quantity prediction model for education facilities using regression analysis in the planning phase. The developed model is focused on the required quantities of reinforced concrete and bricks. In order to achieve the objective, the data of 44 educational facility projects collected from Gyeonggi-do was used in the regression model. This study can be utilized by major stakeholders to accurately predict construction costs by estimating the appropriate quantities of reinforced concrete and bricks in the planning design phase.

• 국제학술발표논문집
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• The 6th International Conference on Construction Engineering and Project Management
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• pp.401-404
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• 2015

Demand on free-form buildings is gradually increasing, yet owing to the difficulty of production-installation work, several problems occur in the construction phase upon construction of a building, including the increased cost and construction duration, and reduced constructibility. To solve these problems, a techonology to produce FCP using a CNC(Computerized Numeric Control) machine is developed. The technology is that the information of designed free-form buildings to the CNC machine is transferred, and the transferred information is used for RTM(Rod-Type Mold, the mold shaped by back-up rods) and PCM(Phase Change Material) shaping, and the shaped RTM and PCM have the role of molds to produce FCP. Construction duration and project cost are limited in building sites, so the efficiency of processes like production-installation of FCP for application of the technology is significant. Since it is almost impossible to change the production-installation process at the construction phase when they are established, process should be deliberately decided. Therefore, the purpose of the study is to propose a production-installation simulation model of free-form concrete panels, in aspect of PCM. This paper is establishing the process for production-installation of FCP, estimating time required by each construction type and proposing a time simulation model that changes according to various constraints based on the analyses. With the time simulation model, it will be possible to build a cost model and to review the optimal construction duration and project cost.

• Journal of Construction Engineering and Project Management
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• 제2권1호
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• pp.1-4
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• 2012

The importance of project performance management as an alternative for solving problems is rising, which are followed by the hardships of managing construction project in the construction industry. This research classifies and applies the improvements made by the operator's work, in order to apply factors of success on the construction project, as performance management factors. In addition, in order to predict the results reflecting the project characteristic of performance management factor un-improvable by the operator in the initial stage of construction, the effect of project characteristic to the performance was drawn by performance difficulty. Also, in order to improve the predicted performance, researches on setting valid best practices according to the performance territory through a correlation analysis between the best practices improvable through the operator's work, and the performance was made.

• 국제학술발표논문집
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• The 3th International Conference on Construction Engineering and Project Management
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• pp.1242-1247
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• 2009

The sudden changes in the construction market and the progressively intensifying price wars have amplified the importance of the construction cost estimation in the initial and planning phases of construction projects. However the methodologies and process of estimating construction cost in the planning and design phase are not standardized in the domestic market, in contrast to the markets of more developed countries. Therefore this paper proposes a new approximate estimation model to be used from the initial stages of construction projects. This methodology that extracts, modifies and synthesizes comparable elements of previous cases. This will introduce the foundation for the implementation of systems with improved usability and applicability.

• Journal of Construction Engineering and Project Management
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• 제5권2호
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• pp.1-10
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• 2015

There is a high confidence based on scientific evidence that climate is changing over time. Now climate change is considered as one of the challenges facing the construction industry. As no project is risk free and climate change has a strong impact on the different phases of the construction project lifecycle. This research aimed at providing a platform of knowledge for the construction management practitioners about the impacts of climate change on the construction projects lifecycle, identify the most dangerous climate change factors on the construction project lifecycle, and identify the most affected phase by climate change factors through the construction projects lifecycle. The study depended on the opinions of civil engineers who have worked in the construction projects field among the reality of Gaza Strip. Questionnaire tool was adopted as the main research methodology in order to achieve the desired objectives. The questionnaire included 127 factors in order to obtain responses from 88 construction practitioners out of 98 representing 89.79% response rate about the influence of climate change on the generic lifecycle of construction projects. The results deduced that the most significant influence on the construction project lifecycle was related to the extreme weather events, rainfall change, and temperature change respectively. There was a general agreement between the respondents that the most affected phase by temperature, rainfall, and extreme weather events is the execution phase. The results also asserted with a high responses scale on the need to alternative procedures and clear strategies in order to face the climate change within construction industry.

• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2003년도 학술대회지
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• pp.19-26
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• 2003

담배 제조공장의 노후화에 직면하여 경쟁력 확보, 현대화, 합리화, 환경친화 둥을 실현하고자 신제조창 사업이 구상되었으며, 이러한 목표 실현을 위해 사업 초기단계의 적절한 계획 및 검토가 필요하게 되었고, 이에 따라, 초기단계에 CM을 도입하게 되었다. 건물, 대지 등에 대한 타당성 검토, 공장건설 기본계획 수립 및 제조시설의 선정, 건설공사 발주용 입찰안내서 작성 등의 설계 전 업무부터 준공 후 유지관리까지 사업 전반에 걸쳐 CM업무를 수행하였다. 영주 신 제조창 CM은 다른 턴키프로젝트와는 달리 기본설계 이전에 분야별 전문성이 확보된 CM단이 조직되어 활동을 시작하였다. 이에 따라 본 연구에서는 사례프로젝트의 설계 전 단계에서 실제 수행된 CM업무들을 분석${\cdot}$평가한다. 이를 통해 설계 전 단계 CM업무의 중요성을 강조하고, 향후 CM 투입 시점이 설계 전 단계로 변화하는데 일조하고자 한다.

• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2004년도 제5회 정기학술발표대회 논문집
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• pp.457-461
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• 2004

착공 전 단계의 부족한 공정리스크 관리는 시공단계의 공정리스크로 발생하여 프로젝트의 공기연장과 원가상승 등의 부정적인 영향을 미치게 된다. 따라서 착공 전 단계의 공정리스크 관리는 프로젝트 성공의 중요한 요소이자 건설기업의 경쟁력으로 대두되고 있다. 이러한 관점에서 본 연구는 공사 착공 전 단계의 공정리스크 관리를 위한 대상 공종별 리스크 요인 도출 및 대응방안을 제시하고자 한다. 대상 공종은 토공사, 철근콘크리트공사, 철골공사, 커튼월공사로 한정하였고 방법론은 지식관리시스템(Knowledge Management System)을 적용하여 공종별 전문가에 의한 업무 플로우를 작성하였다. 업무 플로우 분석을 통하여 업무 단계별 공정리스크 인자를 도출하였고, 리스크 인자의 중요도에 따른 리스크 요인별 대응방안과 담당자, 수행시점, 요구정보 등과 같은 세부대책을 제시하였다.

• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2007년도 정기학술발표대회 논문집
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• pp.797-800
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• 2007

건설 프로젝트에서의 VE는 예산낭비와 비효율적 요인을 서전제거하는 유용한 도구로 활용되고 있다. 이에 따라 2006년부터 건설교통부에서는 "설계의경제성등검토"를 총공사비 100억원 이상으로 확대 시행하고 있다. 그러나 이러한 제도적 뒷받침이나 기술적인 노력에도 불구하고 국내 설계VE는 수행과정에서 문제점이 지적되고 있어 효과가 극대화되지 못하고 있다. 효과적인 설계VE팀 구성으로 설계VE의 성과를 극대화하기 위해서는 설계VE팀의 역량평가에 대한 체크리스트의 개발이 필요하다. 따라서 본 연구는 설계VE팀의 역량평가 체크리스트 개발을 위한 기초자료로써 역량 평가항목을 도출하고 가중치를 산정하고자 하였다. 이를 위하여 설계VE팀의 특성에 따른 역량인자를 도출하여 팀 지식, 팀워크스킬, 팀 태도로 구별하여 구성하였다. 도출된 역량인자의 중요도에 대해 1차 설문조사를 실시하여 신뢰도와 타당도를 검증하고, 그 결과로 도출된 제 1, 2, 3계층의 역량 평가항목에 대하여 계층 분석적 의사결정기법을 활용한 2차 설문조사를 실시하여 가중치를 산정하였다.