Hi! I went through descriptions how to calculate the design case for public metering/Autocontrol Lavatory Faucets and have among others the 2013 version "Water Use Reduction Additional Guideline" in front of me. The guideline states that baseline for public metering/Autocontrol Lavatory Faucets is 0.25 GPC and the design case is calculated by flow rate and 12 seconds duration. This is then benchmarked against 0.25 GPC. Example: design case= 1.32 GPM * 12/60= 0.26 GPC. Then I would benchmark 0.25 against 0.26 and find out that i actually use more water in the design case than the baseline. Is the calculation correct? Thanks.
You rely on LEEDuser. Can we rely on you?
LEEDuser is supported by our premium members, not by advertisers.
Go premium for
Carlie Bullock-Jones
PrincipalEcoworks Studio
LEEDuser Expert
220 thumbs up
July 5, 2013 - 11:48 am
Hello Juliane,
Yes, the conversion is correct. Note that the lavatory fixture can exceed the baseline, as long as your overall performance of all applicable fixtures demonstrates a 20% reduction.