Comparison of Design-Build to Design-Bid Build as a Project Delivery Method

This study evaluates the difference between the Design-Bid-Build (DBB) and Design-Build (DB) project delivery methods. The project delivery method defines the acquisition process, relationships, roles and responsibilities of the project team and the sequence of events to deliver the facility. Southwest Division, Naval Facilities Engineering Command, (SWDIV), has been using both the DBB and DB project delivery methods for the past decade. The most recent four-year period has seen an increase in the use of DB project delivery. This research provides a definitive and comprehensive investigation into the comparative performance of projects delivered using these two methods. A comparison of cost, schedule and quality attributes of the two types of project delivery systems was completed using specific data from 110 military construction (MCON) projects. This study included extracting all MCON projects from the financial information system (FIS) database for the period 1990-2000. The first DB project was delivered in FY 1996, therefore the study focused on MCON projects completed from FY96-2000. All completed MCON projects were used to compare performance of all projects to the focus of this research, Bachelor Enlisted Quarters, Category Code 721. This study included interviews to verify the financial information system (FIS) data. A Survey Questionnaire was distributed as the primary tool to collect data on quality performance. Several variables critical to project performance identified during interviews, survey questionnaires and data collected from FIS were also included in this study.Naval Postgraduate School Monterey CA is the author of 'Comparison of Design-Build to Design-Bid Build as a Project Delivery Method', published 2001 under ISBN 9781423524113 and ISBN 142352411X.