• Journal of Construction Engineering and Project Management
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• 제3권2호
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• pp.58-65
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• 2013

Earthwork activities are typically performed by heavy duty diesel (HDD) construction equipment that consumes large quantities of diesel fuel use and emits large quantities of pollutants, including nitrogen oxides (NOx), particulate matters (PM), hydrocarbon (HC), carbon monoxide (CO), and carbon dioxide ($CO_2$). This paper presents the framework for a model that can be used to estimate the production rate, activity duration, total fuel use, and total pollutants emissions for earthwork activities. A case study and sensitivity analysis for an excavator performing excavations are presented. The tool is developed by combining the multiple linear regressions (MLR) approach for modeling the productivity with the EPA's NONROAD model. The excavator data from RSMeans Heavy Construction Data were selected to build the productivity model, and emission factors of all type of pollutants from NONROAD model were used to estimate the total fuel use and emissions. The MLR model for the productivity rate can explain 92% of the variability in the data. Based on the model, the fuel use and emissions of excavator increase as the trench depth increase, but as the bucket size increase, the fuel use and emissions decrease.

• 국제학술발표논문집
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• The 3th International Conference on Construction Engineering and Project Management
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• pp.1509-1514
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• 2009

CII BM&M(Benchmarking & Metrics) in USA and DTI(Department of Trade and Industry) in UK have built up systems that enable performance measuring and made the results of performance measurement comparable between projects to utilize them as benchmarking tools. By comparing the results of performance measurement, it is possible to grasp the success level of project management and to establish the direction of management. However, construction projects are much diversified and even those projects with the same work type have different attributes. Therefore, simply comparing the results of project performance measurement without considering the characteristics of projects is not justifiable and affects the reliability of the benchmarking results. Therefore, to solve this problem, this study presents a methodology that makes it possible to compare the individual construction projects considering various characteristics. The benefits and importance of project characteristics to overall project performance will be quantitatively expressed and they will be reflected on the results of performance management. By maximally converting multiple projects with different characteristics into the same projects through a new methodology to convert different projects into the same level utilizing such utility-bases and comparing the performances of those projects, project performance results can be utilized in project management as a tool for more accurate decision making and as a robust benchmarking tool.

• 국제학술발표논문집
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• The 4th International Conference on Construction Engineering and Project Management Organized by the University of New South Wales
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• pp.88-92
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• 2011

Even though attempts are made to transform from 2D CAD to BIM representation for building design and construction, it were not so successful for practical implementation until recently in construction industry in Korea. However, there is a dramatic change for the use of BIM by collaboration among government, independent organizations as well as industry itself. Government reckons that BIM is an important tool for environment friendly construction and industry competitiveness. The government not only makes national BIM standards and push policies in order to make market environment. Independent organizations such as BuildingSMART Korea does active role to stimulate the transformation process successfully. They act as opinion leaders for the Government to consider BIM implementation for industry competitiveness issue. They make roadmap as well as technical standards and guidelines. It also leads technical developments and supports for its implementation. Government supports researches for the implementation of BIM. The research includes BIM standards, guidelines, linking with existing Architectural Administrative Information Systems, making libraries as well as education. Government makes policy for BIM as a compulsory data for bidding process of newly designed government buildings. Private sector not only agrees BIM as a tool to adapt but also essential methods for its survival in domestic and foreign construction market. Architectural design companies and constructions companies currently develop technical skills and implement BIM for new projects such as Dongdaemoon Plaza that cannot be successfully drawn by conventional methods.

• 산업진흥연구
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• 제8권4호
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• pp.47-60
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• 2023

본 연구의 목적은 건설종사자의 TBM을 통한 건강신념요인이 재해예방행동에 미치는 영향에서 자기효능감과 안전의식의 매개효과를 파악하고자 하였다. 이를 위해 건강 관련 행동을 예측하고 설명하기 위해 개발된 사회심리학적 건강 행동 변화 모델인 건강신념이론의 주요 변수들을 적용한 연구모형을 제시하였다. 본 연구의 연구모형을 실증적으로 검증하기 위해 화학 Plant 건설 TBM을 활용한 경험이 있는 건설종사자들을 대상으로 설문 조사를 하였다. 연구결과 첫째, 화학 Plant 건설을 활용한 건설종사자의 지각된 심각성은 자기효능감과 안전의식에 유의미한 영향을 미치는 것으로 나타났다. 둘째, 화학 Plant 건설을 활용한 건설종사자의 지각된 개연성은 자기효능감과 안전의식에 유의미한 영향을 미치는 것으로 나타났다. 셋째, 화학 Plant 건설을 활용한 건설종사자의 지각된 장애는 자기효능감과 안전의식에 유의미한 영향을 미치는 것으로 나타났다. 넷째, 화학 Plant 건설을 활용한 건설종사자의 지각된 이익은 자기효능감과 안전의식에 유의미한 영향을 미치는 것으로 나타났다. 본 연구의 목적은 TBM을 통해 화학 Plant 건설종사자의 재해예방행동으로 중대 재해를 감소시키고자 한다.

• 한국건축시공학회지
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• 제11권6호
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• pp.567-575
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• 2011

공정계획 전산 tool은 건설정보화의 발전에 따라 반드시 필요한 도구이나 이를 활용하기 위한 여건과 사용자의 이해가 부족한 것이 현실이다. 특히 현행 공정관리 정보화 시스템에 대한 실무자의 의견조사 결과가 부정적인 이유가 공정계획 이전의 관리기획단계 정보의 내용과 기술사항이 부재함에 따라 공정기획 전문가 이외는 접근의 어려움이 있는 것으로 분석되었으며 이에 공정관리 전산화의 최적화에 대한 사용자의 요구와 시스템의 개선방향을 고찰하였고 이를 통한 기존시스템의 단점 개선과 건설업에 특화된 전문시스템의 개발을 도모하고자 하였다. 이에 WBS, CBS를 통합한 '통합 WBS(IWBS)'의 구축 및 OBS와의 상호 연계(Link)를 위해서는 데이터의 호환성과 운용 정보의 통합기술이 무엇보다도 중요하다고 판단 되며, 프로젝트 단위(WBS level 1), 사업시설 단위(WBS level 2), 관리직능 단위(OBS level 1) 및 관리엔지니어 단위(OBS level 2)의 4단위 지수에 대한 데이터코딩을 통해 변화하는 공사정보 즉 공사량, 공사원가, 소요공기 그리고 관리부서로 정보의 일관성을 높이기 위한 전산시스템의 개발이 필요한 것으로 나타났다.

• 국제학술발표논문집
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• The 6th International Conference on Construction Engineering and Project Management
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• pp.518-522
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• 2015

Green Construction is the construction activities that conserved energy, land, water and material to reduce the negative effect to the environment while assuring essential demand on quality and safety during project construction. This paper critically examine the contribution of awareness and understanding, green construction practices and green construction innovation with the green construction benefits. A measurement model based on the theoretical framework and exploratory factor analysis was developed and tested using structural equation modelling technique. This study employs a survey research methodology involving a total of 346 respondents among construction contractors, developers, clients and consultants in the construction industry. The findings indicate that the awareness and understanding, green construction practices and green construction innovation are significant predictors of the green construction benefits. From the practical perspective, the findings should alert the construction participants on the need of awareness and understanding, green construction practices and green construction innovation towards the green construction benefits. In addition, the findings can be used as diagnostic tool for continuous improvements in the Malaysian construction industry.

• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2004년도 제5회 정기학술발표대회 논문집
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• pp.109-116
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• 2004

Design for Safety 개념이 반영된 건설안전관리정보모형을 개발함에 있어 본 연구는 도입의 필요성을 입증하고 안전관리시스템과 안전관리정보모형의 기본개념을 제안하는 선행적 성격을 가진다. Design for Safety 개념의 필요성은 재해 원인모형에 관한 이론고찰, 사망재해에 대한 사례조사를 통해 입증하였으며, 주체별 안전책임과 역할, 안전관리프로세스, 유해위험평가기법으로 구성된 안전관리시스템은 국내 $\cdot$ 외 관련연구를 종합하여 제안하였다. 또한 안전관리정보모형의 기본개념은 현행 안전정보 인프라에 대한 문제점과 안전관리시스템 구성요소의 특징에 따라 제시되었다.

• Genomics & Informatics
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• 제4권2호
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• pp.80-86
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• 2006

It is clear that the construction of large insert DNA libraries is important for map-based gene cloning, the assembly of physical maps, and simple screening for specific genomic sequences. The bacterial artificial chromosome (BAC) system is likely to be an important tool for map-based cloning of genes since BAC libraries can be constructed simply and analyzed more efficiently than yeast artificial chromosome (YAC) libraries. BACs have significantly expanded the size of fragments from eukaryotic genomes that can be cloned in Escherichia coli as plasmid molecules. To facilitate the isolation of molecular-biologically important genes in Ashbya gossypii, we constructed Ashbya chromosome-specific BAC libraries using pBeloBAC11 and pBACwich vectors with an average insert size of 100 kb, which is equivalent to 19.8X genomic coverage. pBACwich was developed to streamline map-based cloning by providing a tool to integrate large DNA fragments into specific sites in chromosomes. These chromosome-specific libraries have provided a useful tool for the further characterization of the Ashbya genome including positional cloning and genome sequencing.

• 한국건설관리학회논문집
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• 제21권6호
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• pp.27-37
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• 2020

본 연구에서는 현장 품질관리 업무에서 나타나는 문제들을 해소하기 위해 모바일 BIM기반 품질관리 지원도구를 개발하였다. 본 연구의 도구를 개발하기 위해 국내 품질관리 업무의 절차를 분석하고 존재하는 문제를 해결하기 위해 12개 기능을 도출하여 공종별체크리스트와 BIM모델 객체 매핑과정을 수행하였다. 그리고 도구 유용성 설문조사를 통해 개발된 도구가 품질관리업무에 존재하는 문제를 해결할 수 있다고 확인하였다.

• 한국BIM학회 논문집
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• 제6권4호
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• pp.9-17
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• 2016

Currently whole-house refurbishment for substantial energy efficiency improvement of existing housing stock is needed to achieve the targeted 80% CO2 emission reduction. As whole-house refurbishment requires a larger capital investment for lower CO2 emission, the simultaneous use of Life Cycle Costing (LCC) and Life Cycle Assessment (LCA) methodologies are recommended to generate affordable refurbishment solutions. However, two methodologies are difficult to use due to a lack of proper LCC and LCA datasets. As a response to the current problems, many researchers explore potentials in Building Information Modelling (BIM) to improve current construction practice. As a result, a BIM tool - IES IMPACT (Integrated Material Profile And Costing Tool) - has been introduced to the UK construction industry for simultaneous calculation of LCC and LCA. Thus, this research aims at examining the capability and limitation of the IES VE/IMPACT as a BIM tool for whole-house refurbishment. This research reveals that the IES VE/IMPACT is feasible for whole-house refurbishment by providing LCC and LCA information simultaneously for informed decision on refurbishment solution selection. This research shed lights on the current problems lying on the data exchange between two different BIM tools. It is revealed that additional efforts from construction professionals and industry are required to make reliable BIM objects library with LCC and LCA datasets.