Forum discussion
CS-2009 WEp1: Water Use Reduction
We are employing 0.5 gpm lav fixtures with sensors and timed cut off at 10 seconds. Can we factor those to 0.125 gpm because the average use will be say 20 seconds?
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Carlie Bullock-Jones
PrincipalEcoworks Studio
LEEDuser Expert
220 thumbs up
September 5, 2012 - 6:24 pm
Hi Charles,
As outlined in the Water Use Additional Guidance document on the USGBC website (http://www.usgbc.org/ShowFile.aspx?DocumentID=6493) the default duration for a metering type / autocontrol faucet is 15 seconds for the baseline and 12 seconds for the design case; durations less than 12 seconds are not permitted for LEED calculations as shorter intervals are insufficient for typical hand washing. (e.g. a 0.5 gpm lav at 12 seconds would equal a 0.10 gpc metering fixture).
Hope helpful!