Comparative Analysis of Project Delivery Systems Cost Performance in Pacific Northwest Public Schools

Eddy M. Rojas · Ian Kell

86 citations0/0 files storedJournal of Construction Engineering and Management

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Construction Project Management and Performance Public-Private Partnership Projects Value Engineering and Management

Abstract

Alternative project delivery systems such as construction management at risk (CMR) are increasingly used in public school construction in the United States. CMR is expected to benefit owners with a guaranteed maximum price (GMP), decreased change order cost, and increased cost “certainty.” This paper empirically compares cost growth performance of the CMR and design-bid-build (DBB) methods in Pacific Northwest public school projects. Data were collected from state records and previous studies on 297 completed schools in Oregon and Washington. The analysis of the data shows no statistically significant difference between CMR and DBB in construction change order costs, school project costs exceeding the GMP in 75% of the cases, and a statistically significant difference in cost growth between CMR and DBB projects during buy out, making CMR projects less efficient at controlling cost growth at buy out. These results counter some of the traditional expectations of the CMR delivery method.

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1998Comparison of U.S. Project Delivery Systems 2002Influence of Project Type and Procurement Method on Rework Costs in Building Construction Projects

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