Basis of Design (BOD) is a document that records which of the following?

• A. A Budget Report
• B. A Safety Plan
• C. A Document that records the concepts, calculations, decisions, and product selections used to meet the Owner's Project Requirements (OPR) and to satisfy applicable regulatory requirements, standards, and guidelines; the document includes narrative descriptions and lists of items that support the design process
• D. A Project Schedule

Answer: (C)

Basis of Design is the document that records the design intent and the decisions, calculations, and product selections used to meet the Owner's Project Requirements and applicable regulatory requirements, standards, and guidelines. It provides narrative descriptions and lists that explain how the design will achieve performance criteria, including design criteria, equipment selections, control strategies, sequences of operation, and the rationale behind these choices. This document creates traceability from the Owner's Project Requirements through the design, procurement, and commissioning processes, and serves as a reference for design teams and the commissioning authority. It is not a budget, safety plan, or project schedule, which fulfill different purposes.