Forum discussion
NC-2009 WEp1: Water Use Reduction—20% Reduction
Hello,
I was just wondering if anyone knows the reference or basis of the numbers used in Table 2. Default Fixture Uses, by Occupancy Type in the LEED manual? Example; The default for residential occupants is 5 uses per day of water closet and lavatory faucet, 1 shower, and 4 kitchen sink uses.
Cheers,
Neshat Sakeena
LEEDuser is supported by our premium members, not by advertisers.
Go premium forTo post a comment, you need to register for a LEEDuser Basic membership (free) or login to your existing profile.
Can you explain the 12-second duration for metering faucets?
Can I use a nonpotable water source to contribute to WEp1 compliance?
We are having trouble finding EPAct-compliant fixtures. Is that a problem?
Where can I find a clear meaning of "public" and "private" as relevant to lavatory faucets?
Are shower duration controls an acceptable water-saving strategy?
Can I include process water savings in order to earn an Exemplary Performance point?
Jean Marais
b.i.g. Bechtold DesignBuilder Expert832 thumbs up
December 6, 2016 - 3:57 am
From memory the rates and uses per day are from the IPC (international plumbing code).
In MEP design both anual usage and peak (or design) rates are considered. The designer needs to size equipment (pumps, filters, pipe dimensions) to deal with peak demand rates that are subject to ratios of concurrent usage, AND caluculate the annual water usage based on daily usage.
The two are however not the same.