What type of document does the Basis of Design (BOD) represent?

The Basis of Design (BOD) is fundamentally a design narrative that outlines the reasoning behind the design decisions made during a project. This document aligns the design with the project goals by clearly articulating the intentions and requirements that guided the development of the project. It includes parameters such as performance criteria, design standards, and system functionalities, effectively serving as a cornerstone for both the design process and subsequent construction activities.

A well-crafted BOD helps ensure that all stakeholders have a clear understanding of the design's objectives, making it easier to address performance expectations and requirements throughout the project lifecycle. By establishing a thorough narrative, it can also assist in managing project changes and verifying that the final constructed system meets the initial design intent. This level of clarity and alignment is essential in the commissioning process to ensure successful project outcomes.