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 :

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?

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?

View answers »

Forum discussion

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

Faucet flow rate test and restraining measure

Default Avatar
Charlie Zhu
project director
Beijing Qidi Daring Energy Technology Co., Ltd.
LEEDuser Basic Member
2 thumbs up

Hi. As requested by the review team, we need to prove the faucet flow rate. However, we can not find any data from the manufacturer. We use a basin and a stopwatch to test the flow rate. To meet the requirement of 0.5 GPM, we wrench the angle valve connected to the faucet. Is it acceptable for such measures to prove the faucet flow rate meets the requirement of 0.5 GPM ?

2
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  »

Default Avatar
John Drigot
Design/LEED Specialist
The Neenan Company
LEEDuser Basic Member
133 thumbs up

Wed, 08/24/2011 - 14:30

Charlie, I would challenge the manufacturer to provide the flow rate or consider changing out the aerators. I don't think modifying the flow rate by taking a wrench to the supply would be acceptable to GBCI. Typically, the flow rate is measured at a specific pounds per square inch (PSI) flow rate. With the variance in water pressure around the world this is one way to ensure the GPM flow rates meet the requirements. This is what I consider the best source for replacement aerators, http://www.neoperl.com/default.aspx. I was in Beijing in June and experienced the big rain. It made the sky look beautiful.

Add new comment

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