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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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CS-2009 WEp1:Water Use Reduction

Pre-rinse spray valves

Profile picture for user tapiopeltonen
Tapio Peltonen
Sr. Mechanical Engineer
Granlund Oy
LEEDuser Basic Member
51 thumbs up

LEED-CS 2009 form WEp1 version 4.0 states the following: "Note: The flow rate for all pre-rinse spray valves must be less than or equal to 1.6 gpm. If there are multiple fixtures with varying flow rates, insert the highest flow rate." The local building code requires flow rate that is greater, than 1.6 gpm for pre-rinse spray valves. How do you solve this problem?

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Profile picture for user sgeithner
Susann Geithner
Principal
Emerald Built Environments
LEEDuser Basic Member
900 thumbs up

Thu, 09/01/2011 - 13:42

The aggregated consumption is what really counts for this credit. So you can be above 1.6gpm and make up for it with foe instance high efficient faucets. Also if you provided proof for the requirements per building code than the reviewer may let you assume the flow rate for design and baseline case to be equal. Check the LEED Interpretation database for a ruling on this. In general if this is a code requirement than they let you do this. That's from my experience with other credits.

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