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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?

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Forum discussion

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

WEc3 Baseline - or Existing Efficiency?

MacKenzie King

Designer

Tracy A. Stone Architect

LEEDuser Basic Member

2 thumbs up

July 26, 2012

We're looking to pursue this credit, but are a bit confused how the baseline is calculated for an interior renovation project with a portion of new construction. Our mechanical engineer seems to believe our baseline amount for WEc3 is actually taken from the existing water efficiency amounts instead of from the table of baseline amounts in the credit. Is anyone familiar with the baseline calculations and how this would work for a renovation? (We will be registered under LEED 2009 New Construction)

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Tristan Roberts

Representative

Vermont House of Representatives

LEEDuser Expert

7780 thumbs up

Fri, 07/27/2012 - 02:09

MacKenzie, if you were doing LEED-EBOM certification, then improvement over a baseline might be more relevant. In a LEED-CI or LEED-NC project, the baseline is determined by the definitions provided in the credit language (see the tab above), not pre-existing conditions in the building.

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