The performance of every system including building enclosure, structural, HVAC, electrical lighting and others is dependent on four areas of interaction: The individual components in the system, the components with each other as a system, the system with other systems in the building, and finally the building with the environment.
A functional test of the whole building before acceptance should include several testing, measuring and verification. It is recommended to perform the full functional test during winter and summer peak load. The HVAC complements the building envelope by properly conditioning the interiors and pressurizing the building with dehumidified air. Airborne and structure-borne sound and vibration varies in accordance to the equipment load and performance.
It is important to evaluate and review the operating parameters of all systems in real time. Building envelope air leakage rate, air exchange rate, differential pressure, ambient building conditions, moisture, particles content, filter’s efficiency, dew point and water pressure, exterior drainage plane and wind barrier, interior air barrier and vapor barrier, exhaust re-entrainment, micro climate analysis, thermal performance continuity, thermal performance peak and peak occupancy air conditioning impact.
The performance of the whole building as defined by the owner’s project requirement requires an approach evaluating the interaction among materials, systems, and the building as whole with the environment. This is especially critical for functional testing and the overall success of the building performance.