2019 CSCE Annual Conference - Laval (Greater Montreal) Conference
Dr. Lameck Onsarigo, Kent State University
Progressive design-build (PDB) is a new and distinctive method where an owner procures the services of a design-builder based primarily on qualifications or best value without final price and schedule commitment as part of the process. PDB leverages the benefits of design-build (DB) where one contractor is selected for both design and construction, and the benefits of construction manager-at-risk (CMAR) where the owner has input and control over the preconstruction phase. The collaboration between the owner and the DB team encourages innovation and provides performance guarantees. Being a new method coupled with a lack of long-term experience necessitates continued investigation of the effective tools and success factors for improved implementation. To this end, this research study was conducted to further facilitate research and applications of PDB. This paper discusses the results of a comprehensive literature review and analysis of current applications. Publications including journal articles, conference proceedings, case studies and reports were reviewed. The analysis revealed that some of the effective tools include owner education, risk assessment criteria, project selection criteria, proposal evaluation criteria, balanced collaborative contract, project packaging, open book pricing and continuous evaluation. Additionally, the paper addresses the differences between PDB and DB, the benefits of PDB, and the challenges and potential obstacles to a successful PDB delivery. This paper contributes to the existing PDB knowledge facilitating further research and applications by both academic and industry stakeholders.