The architect or acoustics consultant calculates total ceiling area and decides whether Option 1 (all ceiling material to have an NRC of 0.70) or Option 2 (a combination of ceiling, wall and floor material has a combined NRC of 0.70 for an area the same s

The architect or acoustics consultant calculates total ceiling area and decides whether Option 1 (all ceiling material to have an NRC of 0.70) or Option 2 (a combination of ceiling, wall and floor material has a combined NRC of 0.70 for an area the same size as the ceiling area) is best for the project. Option 1 is the most straightforward but might not be possible for all projects due to design constraints such as, ceiling material selection, classroom layout and programmatic issues. Research other design strategies and compliant products.

Commercial Interiors projects must include in the water-use calculations any water fixtures that are being used by occupants, even if the installation of the fixtures is not within the scope of the project. For example, an office project that is not updat

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). However, the calculations for WEc1 must include all fixtures that are used by the LEED-CI project occupants (both within and outside of the LEED-CI project space).

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

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.