PROGRESSIVE DESIGN-BUILD target price and emerging norms About the author Daniel Josiah, PGDip, PQS, MRICS, MCIArb, is Director, Contracts & Commercial with Lakeland Consulting Inc., where he provides services to a wide range of clients in the private and public sectors on pre-contract, delivery, and contract closeouts. Daniel has a particular expertise in issues around scope, schedule, and cost, and has prepared expert reports for the purposes of negotiation, alternative dispute resolution, and litigation. In 2020, Daniel was selected by On-Site Magazine and SitePartners in the inaugural edition of the 40 Under 40 in Canadian Construction.
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n the last 18 months, we have seen knock on effects of the pandemic that have impacted supply chains globally including those in the construction industry. Uncertainty factors including commodity price fluctuations, labour shortages, and prolonged lead times continue to contradict project stakeholder commitments by adversely impacting the agreed scope, price, and schedule. With this ongoing uncertainty, the risk profile of projects has become unpredictable, and owners on large and complex infrastructure/institutional projects are increasingly engaging in
collaborative delivery models that provide owners with more control over the design, costs schedule, and risk through innovation on an iterative basis. In parallel, specific provisions addressing the rights and responsibilities related to relative unknowns such as the pandemic are being introduced into contracts. Progressive Design-Build (PDB) is an emerging delivery model which is being introduced in large scale infrastructure projects. This article provides an overview of the PDB delivery model which is seeing an increased uptake by owners seeking collaborative approaches to reduce procurement and construction timelines,
Figure 1 – Summary of Progressive Design-Build Phases 26 | CONSTRUCTION ECONOMIST | www.ciqs.org | Winter 2021
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