In which phase are functional tests implemented?

In which phase are functional tests implemented?

• A. Occupancy and Operations Phase
• B. Planning Phase
• C. Construction Phase
• D. Design Phase

Answer: (C)

Functional tests are performed when systems are actually installed and ready to be powered and tested, which happens during the Construction Phase. This timing lets the team verify that equipment runs correctly, control sequences and interlocks operate as designed, and the overall integration of systems meets the intended performance using real hardware under real operating conditions. Performing these tests before occupancy helps catch and fix issues without disrupting building users. In the Planning or Design phases there’s no installed equipment to test, and while some testing can occur after occupancy, formal functional tests are most effectively and reliably done during construction to ensure readiness before handover.

Functional tests are performed when systems are actually installed and ready to be powered and tested, which happens during the Construction Phase. This timing lets the team verify that equipment runs correctly, control sequences and interlocks operate as designed, and the overall integration of systems meets the intended performance using real hardware under real operating conditions. Performing these tests before occupancy helps catch and fix issues without disrupting building users. In the Planning or Design phases there’s no installed equipment to test, and while some testing can occur after occupancy, formal functional tests are most effectively and reliably done during construction to ensure readiness before handover.