See all forum discussions about NC-2009 WEp1

Subscribe to new posts about NC-2009 WEp1 Post a new question aboutNC-2009 WEp1

See LEEDuser’s guidance on NC-2009 WEp1»

FAQs about WEp1 :

Will the reviewers accept a spreadsheet as a plumbing fixture schedule in lieu of the plans from the Construction Documents?

In LEED review comments I've been referred to the Water Use Reduction Additional Guidance document. I didn't know this was a required reference document.

Should I include bar sinks? What about mop sinks or janitor sinks? Swimming pools? Safety showers? Bidets? Tub spouts?

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

Can you explain the 12-second duration for metering faucets?

Can I use a nonpotable water source to contribute to WEp1 compliance?

Our project does not have any eligible water fixtures in the project boundary. Can we comply with WEp1?

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?

Our project is a factory with historically a 95% male workforce. The restroom design accounts for this. Can I argue that the male/female gender ratio is different than 50/50?

Are shower duration controls an acceptable water-saving strategy?

Can I include process water savings in order to earn an Exemplary Performance point?

View answers »

Forum discussion

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

auto-shutoff faucets

Jonathan Weiss

Jacobs Buildings & Infrastructure

LEEDuser Premium Member

140 thumbs up

November 7, 2012

I am sure this has been answered elsewhere in this listing but I am confused by the back and forth about auto-shutoff faucets, the most common commercial lavatory faucet in much of the work I am involved in. My understanding is the latest guidance is that these faucets should be entered as a metering faucet, with the GPM factored into a 12 second duration, and the baseline would be a 15 second cycle at 0.5 GPM. Is this correct? (Addendum 100000753, Table 2A in Addendum from 11/2/2009 for BD+C). Thanks!

Post a reply

Michelle Rosenberger

Partner

ArchEcology

LEEDuser Premium Member

421 thumbs up

Wed, 11/07/2012 - 16:47

Hi Jonathan, Yes. Consult your Water Use Reduction Additional Guidance document. For commercial use, the calc generally comes out as 0.1 gpc. Please note the example in the guidance doc uses a 1.0 gpm baseline rather than 0.5 gpm.

Add new comment

To post a comment, you need to register for a LEEDuser Basic membership (free) or login to your existing profile.