• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2012년도 춘계 학술논문 발표대회
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• pp.333-336
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• 2012

In modern Construction Industry, as accumulation of capital and improvement of technology skills, buildings are becoming higher and more enormous, also the portion of steel works has been increasing. In addition, it is necessary to predict the optimum level of construction cost in a reasonable way. The composition of construction is direct construction cost, indirect construction cost and so on. However, it is not enough to study about indirect construction cost rather than direct construction cost. In this study, the state of productivity and indirect construction cost are analyzed in the steel production. As a result, the productivity and ratio of indirect cost in steel plant by inserted per 1ton are suggested.

• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2003년도 학술대회지
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• pp.311-314
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• 2003

작업중단이 다음날의 현장 생산성에 미치는 영향을 정량화하기 위해 본 연구는 통계적 방법을 제안한다. 따라서 본 연구는 다음 영가설을 검정하는 절차를 거쳤다. '건설현장에서의 작업중단은 다음날의 현장 생산성과 생산성달성율에 아무런 영향을 미치지 않는다'. 이를 검정하기 위해 본 연구는 작업중단을 생산성에 영향을 미치는 더미 변수로 가정하고, 사례 데이터를 바탕으로 회귀분석을 실시, 작업중단이 생산성에 미치는 영향을 정량화하였다. 또한, 이론 바탕으로 작업중단이 다음날의 생산성달성율에 미치는 영향을 검토하였다. 이러한 연구를 바탕으로, 현장에서 작업연속성을 확보하기 위한 노력이 생산성 확보 차원에서 유효함을 알 수 있었다.

• 한국건축시공학회지
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• 제12권6호
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• pp.636-647
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• 2012

Construction projects have become so large, complicated and incredibly high-tech that process management is currently considered one of the most important issues. Unlike typical manufacturing industries, most major construction activities are performed in the open air and thus are exposed to various environmental factors. Many studies have been conducted with the goal of establishing efficient techniques and tools for overcoming these limitations. Productivity analysis and prediction, one of the related research subjects, must be considered when evaluating approaches to reducing construction duration and costs. The aim of this research is to present a quantified impact analysis of construction delay factors on construction productivity of a steel staircase system, which has been widely applied to high rise building construction. It is also expected to improve the process by managing the factors, ultimately achieving an improvement in construction productivity. To achieve the research objectives, this paper analyzed different delay factors affecting construction duration by means of multiple regression analysis focusing on steel staircase systems, which have critical effects on the preceding and subsequent processes in structure construction. Statistical analysis on the multiple linear regression model indicated that the environment, labor and material delay factors were statistically significant, with 0.293, 0.491, and 0.203 as the respective quantified impacts on productivity.

• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2004년도 제5회 정기학술발표대회 논문집
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• pp.353-357
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• 2004

현재 우리나라의 철골공사에서 생산성은 철골부재의 중량으로 되어있다. 그러나 철골공사의 생산성은 부재의 중량보다는 피스 수에 더 많은 영향을 받는다. 이에 따라 새로운 철골공사의 생산지수가 필요하다. 본 연구에서는 우리나라 철골공사의 문제점을 분석하고 문제점을 개선할 수 있는 새로운 생산지수를 개발하고자 한다. 이를 통해 전 과정을 통일된 수치화하고 이 수치를 관리함에 따라 복잡한 관리를 보다 효과적으로 통합관리 할 수 있도록 한다.

• 국제학술발표논문집
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• The 9th International Conference on Construction Engineering and Project Management
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• pp.839-846
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• 2022

Traditionally, the construction industry has shown low labor productivity and productivity growth. To improve labor productivity, it must first be accurately measured. The existing method uses work-sampling techniques through observation of workers' activities at certain time intervals on site. However, a disadvantage of this method is that the results may differ depending on the observer's judgment and may be inaccurate in the case of a large number of missed scenarios. Therefore, this study proposes a model to automate labor productivity measurement by monitoring workers' actions using a deep learning-based pose estimation method. The results are expected to contribute to productivity improvement on construction sites.

• 한국건설관리학회논문집
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• 제7권2호
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• pp.127-137
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• 2006

건설생산성은 단위작업에서 발생되는 자원의 활동과 이로 인한 산출물간의 관계를 지표로 표현한 것을 의미하며 수집된 건설 생산성 정보는 공사 진행의 효율성 파악, 작업여건 및 투입자원의 성능이 공정에 미치는 영향도 분석, 프로젝트별 성과 측정, 향후 공사계획을 위한 참고자료로서의 활용 등 프로젝트 관리를 위한 다양한 목적으로 이용될 수 있다. 본 연구의 목적은 데이터웨어하우스, OLAP, 데이터 마이닝 기술을 활용하여 PDA 및 바코드를 통해 수집된 생산성 데이터를 축적 및 분석하고, 생산성 예측 모델을 제시하기 위한 방법론을 제안하는 것이다. 이를 통해 보다 효율적이고도 다차원적인 생산성 분석이 가능한 건설 생산성 관리 시스템을 개발하는 것이며, 개발된 시스템은 건설 사업의 합리적인 성과 측정과 유사 프로젝트의 공사계획 수립에 활용할 실적데이터를 축적할 수 있을 것이다.

• 한국전자거래학회지
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• 제6권3호
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• pp.163-180
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• 2001

New information technology contributes to raising of business productivity in many construction companies. The application of construction integrated management system is expected to save the time of decision-making in business management and shorten the closing account schedule. Construction Integrated Management System based on ERP(Enterprise Resource Planning) system allows to control core business procedure by monitoring technique on real-time. In this paper, we achieves 10％ raise up business productivity in site business area, and 30％ raise up business productivity in head of nce business area by means of DW-CIMS (Daewoo Construction Integrated Management System)

• 한국전자거래학회:학술대회논문집
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• 한국전자거래학회 2001년도 International Conference CALS/EC KOREA
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• pp.127-140
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• 2001

New Information Technology Contributes to raising of Business Productivity in many Construction Companies. The Application of Construction Integrated Management System is Expected to Save the time of decision-making in Business Management and shorten the Closing Account Schedule. Construction Integrated Management System Based on ERP(Enterprise Resource Planning) System allows to Control core Business Procedure by Monitoring Technique on Real-time. In This Paper, We achieves 10% Raise up Business Productivity in Site Business Area, and 30% Raise up Business Productivity in Head Office Business Area by means of DW-CIMS (DAEWOO Construction Integrated Management System)

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2019년도 춘계 학술논문 발표대회
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• pp.159-160
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• 2019

Reinforced concrete construction is one of the labor intensive construction projects and its productivity is very low. It is necessary to increase the productivity of rebar construction for improving the productivity of construction work. Therefore, in this study, the rebar drawings of apartment buildings are analyzed to prefabricate wall rebar unit shaped mesh in the factory and installing it on site. If the proposed wall rebar unit is applied to apartment construction working time of wall rebar can be reduced by 50% or more.

• 국제학술발표논문집
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• The 9th International Conference on Construction Engineering and Project Management
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• pp.1194-1201
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• 2022

The existing literature has witnessed the importance of productivity assessment and deducing factors affecting it. However, yet many models have shown limitations in practical applications in actual construction sites for process planning due to uncertainty and lack of data. This research presents a productivity assessment and database generation framework using simulation and compares the results with RSMeans to derive appropriate equipment combinations alternatives for earthwork operations. Data of 15 different conditions was collected from 5 different construction sites. Prediction accuracy above 90% were achieved for the simulation models with average error rate of 7.4%. The construction productivity assessment framework presented in this study is expected to be highly applicable to operation planning for earthwork operations.