Journal of Construction Engineering and Project Management

Korea Institute of Construction Engineering and Management (한국건설관리학회)
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The Productivity Improvement for Steel Framing Work Efficiency by Work Sampling and 5-minute Rating Technique

  • Chang, SooWon (Department of Architectural Engineering, Ewha Womans University) ;
  • Yi, June-Seong (Department of Architectural Engineering, Ewha Womans University) ;
  • Son, JeongWook (Department of Architectural Engineering, Ewha Womans University)
  • Published : 2015.03.01
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Abstract

This study presents the results of our analysis and recommendations for process and productivity improvements. The project studied consists of a 5-story research building, with a structure of steel frames supporting concrete slabs. The observations focused on the analysis of the overall erection and framing process. The methods used for the analysis consisted in intensive visits on site, where construction processes were observed in term of resources, activities, durations, materials' handling procedures, and technology used. Back to the office, authors used the information captured to model the different trades' activities, using work sampling and 5-minute rating technique. The work sampling provides insight into the activity, hence allowing for process improvements. The productivity of various trades is strongly dependent on the organization of the work process and work site conditions. Improving the productivity of the entire project or company is not possible until everyone is committed to improvement.

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