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 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?

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?

View answers »

Forum discussion

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

mixed use building project (mainly residential)

Default Avatar
Tarek Dalati
Sustainbility manager
CRHI
LEEDuser Basic Member
70 thumbs up

i m working on a mixed use building project (mainly residential) and i have the following question: 1- for offices for example the daily usage is the summation of males usage and females usages based on teh FTE.while for residents in teh appartments shall i use same concept taking into consideration 50/50 ratio (daily use =residents*male ratio*usage per day+residents*female ration*usage per day). 2-In the appartments private toilets, bidets are installed.how to calculate their daily usage.

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  »

Profile picture for user kblust
Karen Blust
Green Building Consultant
The Cadmus Group
LEEDuser Basic Member
83 thumbs up

Sun, 02/13/2011 - 01:22

Your residential project should assume a 50/50 male to female ratio unless project conditions exist (such as a male dormitory) which would affect the gender ratio for the life span of the building and warrant an alternative ratio. If you feel that your project warrants an alternative ratio, submit a detailed narrative with the credit documentation to explain any special circumstances. Per the BD+C Reference Guide, the calculations for WEp1 only include the following fixtures and fittings (as applicable to the project scope): water closets, urinals, lavatory faucets, showers, kitchen sink faucets and pre-rinse spray valves. Bidets are not included in this calculation.

Add new comment

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