What is building commissioning and how is it managed?

Commissioning (Cx) verifies systems perform according to owner's requirements. Process: (1) Pre-design - develop Owner's Project Requirements (OPR), (2) Design phase - review design against OPR, develop Basis of Design, (3) Construction phase - witness equipment installation, verify submittals, functional testing of individual equipment, (4) Acceptance phase - integrated system testing, demonstrate all systems work together, (5) Occupancy phase - seasonal testing, training, resolve issues. Enhanced commissioning extends to envelope, additional documentation. Commissioning authority independent of design/construction teams. Documentation includes commissioning plan, test procedures, issues log, and final report.