• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2016년도 춘계 학술논문 발표대회
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• pp.72-73
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• 2016

Working Posture is an important factor directly connected with quality and productivity of the construction project. In particular, High-rise building construction is required to manage the working posture due to the repetitive task and unfavorable working condition such as high place work, limited space. However existing construction planning of high-rise building construction has a negative effect on the labor's productivity because it is not insufficiently considered for working posture. Therefore the purpose of this study is to suggest a work that needs improvement by analyzing labor's working posture quantitatively using OWAS method. These results would provide the basic information to improve the productivity of the construction project by supporting the construction plan considering the working posture in high-rise building.

• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2001년도 학술대회지
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• pp.295-300
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• 2001

건설사업에서 설계변경으로 인해 공사기간의 연장뿐만 아니라 이로 인한 추가적인 비용이 발생하고 있다. 추가비용 중에서 간접비 부분은 산정방법이 다양하다. 외국의 경우, 작업 생산성 손실 산정과 관련된 많은 클레임에서 각 연구기관에서 수행한 발표자료를 인용하고 있다. 하지만, 국내의 경우 생산성 손실을 발생시키는 여러 요소들이 왜 발생하는지, 그리고 전체 프로젝트에 어떤 영향을 미치는지에 대한 이해 및 연구에 관한 자료는 극히 미비한 실정이다. 따라서, 본 논문에서는 건설현장에서 생산성 손실에 영향을 주는 요소들을 분석하고, 이로 인해 발생하는 손실을 국내 현실에 적합하게 정량적으로 산정 한 수 있는 방법을 제안하고자 한다.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2011년도 추계 학술논문 발표대회
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• pp.135-136
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• 2011

A standard of estimation is used as a basis for estimating the predetermined amount of public construction. However, they raise several points of reasonable labor to be presented to a standard of estimation. For this reason, it is difficult to make a reasonable and efficient estimation of the costs, and this situation presents an urgent need for an accurate way of making such a calculation.This study analyzed the productivity of reinforced concrete work by the CYCLONE model, and the estimated optimal labor through sensitivity analysis, and presented the model on the number of optimal labor through sensitivity analysis.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2007년도 추계 학술논문 발표대회
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• pp.115-118
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• 2007

A tall building construction is needed to reduce the construction duration for project profitability. Reducing the cycle time of typical floor in the structural frame work which have the largest duration in the whole construction, greatly affects construction duration. Nowadays, some projects are accomplished in the 3 day cycle. In order to accomplish efficiently 3 day cycle, productivity information of similar projects is supported. Therefore, this study proposed labor productivity and application by slab formwork to construct by the 3 day cycle. In order to perform an analysis, we selected 3 cases and analyzed the labor productivity on the basis of the amount of slab forms, labors, and durations. Then, we performed the questionnaire to analyze the application by formwork of tall building construction engineers. This study will contribute to establish a reasonable scheduling in structural frame work of a new similar project.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2011년도 추계 학술논문 발표대회
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• pp.11-12
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• 2011

The Construction Standard Production Unit(CSPU) has been used for the standard cost estimate in public and private construction projects. However, It is difficult to reflect the various site attributed variation in productivity using existing CSPU. The reason is that a criteria which site should be selection for enactment and/or revision of CSPU is not established. This study aims to provide essential data to be used for analyzing the labor factors in a way to secure efficiency and reliability of CSPU.

• 한국건설관리학회논문집
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• 제11권5호
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• pp.75-83
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• 2010

건설산업은 노동집약적 산업으로 단위작업마다 작업자가 작업을 얼마나 효율적으로 수행했는가에 따라 노동생산성은 큰 영향을 받으며 노동생산성 향상을 위해 작업여건(work condition)이 관리되어야 한다. 작업여건은 자재, 장비, 타 작업간섭, 작업장 안전 등 작업자의 작업수행과정에 영향을 미치는 요소들로서, 작업의 특성에 따라 작업여건을 구성하는 요소들의 종류는 다양하다. 또한 작업여건들은 현장관리조직의 작업관리 행위 즉 작업관리방식에 의해 제어될 수 있다. 하지만 작업관리방식이 작업여건에 영향을 줄 수 있다는 것은 학계 및 산업차원에서 많은 사람들에게 인식되고 있지만 이를 정량적으로 검증하기 위한 노력은 부족하였다. 따라서 본 연구의 목적은 국내 건설현장에서 활용되고 있는 작업관리방식이 작업여건에 미치는 영향을 정량적으로 검증하는 것이다.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2018년도 춘계 학술논문 발표대회
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• pp.296-297
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• 2018

Due to the decrease in infrastructure investment and stagnation of overseas construction, it is concerned the instability of the construction market. Enhancing the Korean construction competitiveness, productivity improvement could be the breakthrough. In addition, defining construction contents utilizing virtual reality technology is drawing attention along with the trend of the fourth industrial revolution technology development toward the labor productivity improvement. This study conducted a survey to figure out the present state of the productivity management in field and comprehend the factors influence on construction productivity for further Korean construction productivity data platform.

• 한국건설관리학회논문집
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• 제6권6호
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• pp.181-192
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• 2005

건설 프로젝트의 단위작업을 기반으로 발생되는 노무자의 작업시간은 진행된 실적물량 정보와 연계되어 생산성 정보로 가공되고 이는 다시 해당 단위작업의 공정관리와 연계됨으로써 프로젝트의 계획 대비 실적을 비교 및 분석할 수 있는 근거자료로 활용 될 수 있다. 또한 이러한 작업정보(노무자의 작업시간 및 실적물량 정보)는 잔여 작업 일정에 대한 예측 및 작업조 운영계획 조정 등 공정관리와 관련된 다양한 원천데이터로 제공될 수 있으며, 실적자료로 축적되어 향후 유사 프로젝트의 공사계획 수립에 유용하게 재활용될 수 있다. 본 연구의 목적은 PDA, 바코드, 웹 기술 등을 활용하여 단위작업을 기반으로 발생되는 작업정보를 효과적으로 수집하고 이를 생산성 정보로 가공하여 공정 및 공사관리 업무를 지원하는 전산화 시스템을 개발하는 것이다. 개발 시스템을 통해 분석 및 축적된 생산성 정보는 단위작업의 공정과 연계되어 잔여작업 일정 예측 및 작업조 조정 등 다양한 공정 지원데이터를 제공할 수 있으며 지식관리 차원에서 향후 유사 프로젝트의 공정계획 수립시 매우 유용한 참고자료로 활용될 수 있을 것으로 기대된다.

• 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.58-65
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• 2011

Construction Productivity is one of the most important elements in construction management. It is used in construction process scheduling and cost management, which are significant sector in construction management. It is important to make appropriate schedule and monitor how works are done within schedule. But construction project contains uncertainty and inexactitude, modifying construction schedule is being an issue to manage construction works well. Even though prediction and monitoring of productivity can be principal activity, it is hard to predict productivity with manager's experience and a standard of estimate. A large number of factors influencing productivity, such as drawing, construction method, weather, labor, material, equipment, etc. But current calculation of productivity depends on empirical probability, not consider difference of each influencing factor. In this research, the aim is to present a productivity predicting regression model of form work, which includes effectiveness of influences factors. 5 variables existed inside form work are selected by interview and site research based on literature review of existed various productivity influencing factors. The effectiveness and correlation of productivity influencing factors are analyzed by statistical approach, and it is used to make productivity regression model. The finding of this research will improves monitoring and controlling of project schedule in construction phase.

• Journal of Construction Engineering and Project Management
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• 제5권2호
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• pp.16-23
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• 2015

In this paper, a survey related to excavation construction activities among national and international construction companies was conducted to evaluate site productivity in construction industry. To analyze the respective productivity levels of each construction company, a benchmarking measures analysis that featured calculations of the performance ratio (PR) and performance management index (PMI) was performed. As a result of these analyses, it has been found that the work performed by local companies was marked by lower productivity and that of international companies was characterized by good productivity. Further analysis of construction workforce resources P% revealed that a construction company's productivity is largely dependent on production capacity and consumption resources, which means that the retention of skilled workers and utilization of high-quality resources yields the highest level of productivity. These results suggest that for a local construction company to be competitive in the construction work market, it must retrain skilled craftspeople, foremen, engineers, and project managers, and strengthen its building capability by leveraging new equipment and technologies.