In defining performance requirements, what must the design-builder ensure according to owner criteria?

In the context of performance requirements as outlined by owner criteria, ensuring that the design is complete and sufficient for project needs is essential. This involves understanding the specific functional and operational goals of the project, which are critical to satisfy the owner's expectations and requirements. A complete design ensures that all aspects of the project, including safety, functionality, and durability, are adequately addressed, thereby meeting the overall objectives of the project.

Focusing on the completeness and sufficiency of the design helps avoid omissions or deficiencies that could lead to project delays, increased costs, or operational inefficiencies. It serves as a foundation upon which the overall success of the project is built. The design-builder's responsibility is to provide a solution that not only fulfills the requirements but also enhances the project’s value through a well-thought-out approach.

While factors such as aesthetics, flexibility for future changes, and cost minimization are also important considerations, they fall under the broader umbrella of ensuring the project is complete and meets its intended purpose. Therefore, the primary focus is on the design's ability to fully address the owner’s defined criteria, making it the most critical aspect to ensure project success.