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We provided new showers in our project to comply with the alternative transportation credit. Should they be considered in WEp1 calculations?

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Forum discussion

NC-2009 WEp1:Water Use Reduction—20% Reduction

Different GPF for two WC's in same fixture group

Razan Nejem

Environmental Engineer, LEED AP BD+C

LEEDuser Basic Member

38 thumbs up

December 24, 2017

In an office building the the public restrooms have two kinds of Dual Flush WC's with different gpf, one WC has 0.79 gpf and the other one has 0.82 gpf.

In this case, can I make them as average like or choose the fixture with the largest gpf (0.82)?

Post a reply

Gerren Wagner

7Group

LEEDuser Basic Member

16 thumbs up

Wed, 01/03/2018 - 19:54

You could either use the fixture with the largest gpf to be conservative, or you can split the uses between the two fixtures by entering two different lines in the calculator and setting a percentage for usage for each fixture. If you choose to go this route, be sure to provide a description for how the percentages were determined (which occupants are expected to use which fixtures).

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