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 :

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

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?

View answers »

Forum discussion

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

Baseline for public metering/Autocontrol Lavatory Faucet

Profile picture for user lida
Lise Dannesboe
Sustainability Manager
COWI
LEEDuser Premium Member
54 thumbs up

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.

0
Post a reply

You rely on LEEDuser. Can we rely on you?

LEEDuser is supported by our premium members, not by advertisers.

Go premium for $15.95  »

Fri, 07/05/2013 - 15:48

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.

Add new comment

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