Which item is NOT a main construction-phase activity?

• A. Review submittals
• B. Update Cx plan
• C. Coordination efforts
• D. O&M training and documentation

Answer: (D)

During the construction phase, the CxA focuses on confirming installed systems meet specs and are ready for testing, which includes reviewing submittals to verify materials and equipment, updating the commissioning plan to reflect changes, and coordinating across trades to align schedules and resolve interface issues. O&M training and documentation, however, are produced and delivered as part of the handover or post-construction phase, ensuring that building operators have manuals, warranties, and training before or shortly after occupancy. Because of that timing and purpose, O&M training and documentation is not a main construction-phase activity.