Empirical Comparison of Design/Build and Design/Bid/Build Project Delivery Methods
Publication: Journal of Construction Engineering and Management
Volume 135, Issue 7
Abstract
This study compares the performance of design/bid/build and design/build to see if one project delivery method is superior in regards to time and cost. Similar military buildings were used to identify two samples of projects delivered with each of the two delivery methods. These projects provide a meaningful comparison because they include buildings of the same typology (i.e., U.S. Navy Bachelor Enlisted Quarters) delivered using similar design models. Project duration, project duration per bed, project time growth, cost growth and cost per bed were statistically compared. Upon completion of the analysis, the hypothesis that design/build projects are superior to design/bid/build projects in regards to time and cost was tested. Design/build projects were proven superior in performance in almost every measure. Other findings, including recommendations to practitioners and researchers, will be provided as well.
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Acknowledgments
The writers would like to thank the members of NAVFAC, especially to Larry Melichamp, LCDR Eileen D’Andrea, and Steve Knight for providing data and other insightful information required for this study. This study was partially funded by the Center for Construction Industry Studies at the University of Texas.
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© 2009 ASCE.
History
Received: Mar 19, 2008
Accepted: Oct 17, 2008
Published online: Mar 27, 2009
Published in print: Jul 2009
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