In the design phase, the Basis of Design is verified against which document?

• A. Owner's Requirements
• B. Construction Documents
• C. OPR
• D. Commissioning Plan

Answer: (C)

The main idea is that the Basis of Design is the design team’s concrete plan for how the project will meet the owner's needs, and it must be checked against the Owner's Project Requirements to ensure the design intent truly aligns with what the owner wants and needs. The Owner's Project Requirements express the goals, performance criteria, function, and constraints set by the owner. The Basis of Design translates those requirements into specific design decisions, systems, and performance targets. Verifying the BoD against the OPR during the design phase confirms there’s no drift between what the owner requires and what the design intends to deliver, and helps catch gaps early. Construction Documents come later as detailed how-to drawings and specifications derived from the BoD, while the Commissioning Plan focuses on how the project will be tested and verified during commissioning. So the correct baseline for this verification is the Owner's Project Requirements.