Benchmarking Productivity Indicators for Electrical/Mechanical Projects
Publication: Journal of Construction Engineering and Management
Volume 128, Issue 4
Abstract
Labor-intensive industries such as the electrical and mechanical trades are considered high risk due to the high percentage of labor costs. Because of this high risk, it is important for contractors in these industries to closely track labor costs on projects and compare these costs to industry benchmarks. In this paper, benchmark indicators for these industries are established on the basis of actual project data. These benchmarks include the relationship between the percent complete or percent time and cumulative work hours or cost, project size and duration, project size and average man power, project size and peak man power, and average versus peak man power. These relationships were developed using regression analysis. Man power loading charts and the related S-curves were developed from actual project data. The man power loading charts and the related S-curves are useful for resource planning and for tracking progress on a construction project. They can be used to show the cause-and-effect relationship between projects impacted by outside factors and normal labor productivity.
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References
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Hanna, A. S., Russell, J. S., Nordheim, E. V., and Bruggink, M. J.(1999b). “Impact of change orders on labor efficiency for electrical construction.” J. Constr. Eng. Manage., 125(4), 224–232.
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Copyright
Copyright © 2002 American Society of Civil Engineers.
History
Received: Sep 7, 2000
Accepted: Sep 5, 2001
Published online: Jul 15, 2002
Published in print: Aug 2002
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