Which project delivery method is well established and understood?

Which project delivery method is well established and understood?

• A. DBB
• B. CMAR
• C. DB
• D. IPD

Answer: (A)

DBB, or Design-Bid-Build, is well established and understood because it has the longest practical history and a simple, sequential flow. In this approach the owner first engages a designer to complete the full design documents. After design is complete, the project is bid among qualified builders, and a contractor is selected to construct the project based on those plans and specifications. This separation of design and construction creates clear accountability: the designer is responsible for the design quality and compliance, while the contractor is responsible for delivering the project at the bid price and according to the plans. Because the process is linear, with well-known procurement steps, extensive contract templates, and broad familiarity across owners, designers, and builders, it’s considered the most established and understood method. Other delivery methods—design-build, CMAR, and IPD—emphasize earlier collaboration and overlapping phases, and they require different risk-sharing and contract structures, so they’re not as universally understood as the traditional approach.

DBB, or Design-Bid-Build, is well established and understood because it has the longest practical history and a simple, sequential flow. In this approach the owner first engages a designer to complete the full design documents. After design is complete, the project is bid among qualified builders, and a contractor is selected to construct the project based on those plans and specifications. This separation of design and construction creates clear accountability: the designer is responsible for the design quality and compliance, while the contractor is responsible for delivering the project at the bid price and according to the plans. Because the process is linear, with well-known procurement steps, extensive contract templates, and broad familiarity across owners, designers, and builders, it’s considered the most established and understood method. Other delivery methods—design-build, CMAR, and IPD—emphasize earlier collaboration and overlapping phases, and they require different risk-sharing and contract structures, so they’re not as universally understood as the traditional approach.