Which DB type is described as the predominant approach used by the public sector?

• A. Traditional
• B. Progressive
• C. Design-Build
• D. Construction Manager at Risk

Answer: (A)

Public sector projects have historically used a design-bid-build approach, where design and construction are separate and the owner first hires a designer and then awards a distinct construction contract based on competitive bids. This separation aligns with public procurement standards—transparency, competition, and clear liability—making it the predominant delivery method in government projects. Other delivery methods exist and are used in various contexts (for example, design-build or CM at risk can accelerate schedules or improve collaboration), but they have not been the dominant approach in the public sector.