Commissioning costs per square foot for multifamily or similar buildings may be higher than open-floor commercial spaces due to the number of systems to be installed and the higher sampling rate of commissioned systems.
The owner can include additional building systems in the commissioning scope, such as the building envelope, fire and safety systems, and water collection systems.
The architect, mechanical and electrical engineer, and lighting designer describe the standards, goals and performance levels of the designed building systems in the BOD.
Projects with district energy systems must commission, for the prerequisite, all “downstream” equipment—systems installed for the building’s use and included in the project costs.
Develop the Basis of Design (BOD), working with the design team, including at least the architect, mechanical, electrical and plumbing engineers with lighting designer.
Commercial Interiors projects registered after July 19, 2010, if they do not install or modify any fixtures in the base building restrooms, should copmlete calculations for WEp1 that only include fixtures within the tenant space/LEED-CI Project Boundary (the kitchen sink).
Well water and pond water are not considered “reused” water for the purposes of this credit and must count as potable water—so you don’t get credit for substituting them for conventional water sources. Water types that do count as reused are: graywater (lavatory, sink and shower water), rainwater, treated wastewater, air-conditioner condensate, reverse-osmosis reject, and sump-pump water.
Appliance and process water uses such as clothes washers, dishwashers, cooling tower make-up, and others, do not need to be included in the LEED water reduction calculations. However, teams do have the option of earning an additional point for reduced appliance and process water as part of an exemplary performance point, building on the 30%–40% water-use reduction for WEc3: Water Use Reduction.
