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

WE Pr1 Fixture Groups

Profile picture for user gail.williams
Gail Williams
Principal Consultant
WSP
LEEDuser Basic Member
2 thumbs up

Hello, I'm getting a little confused!! I am working on an office building which has the following WCs with different flush volumes: 1) Existing WCs for both male and female (1 bathroom per floor of 6) 2) New female only WCs (1 extra bathroom per floor of 6) 3) Accessible WCs (1 extra bathroom per floor of 6) From reading guidance here and in the Water Use Additional Guidance, do I need to assign a fixture group for each and calculate the FTE for each based on the number of fittings? I would then need to ensure the fixture group for the new female only WCs has 100:0 ratio of females to males as there will be no males using these bathrooms? Do I need to do anything with the default 'Total Daily Uses' for the Accessible WCs as they do not have urinals? Am I over complicating things or is it this complicated?? Thanks Gail

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Sat, 01/18/2014 - 23:11

There are probably a few ways you could go about calculating, but I agree that the easiest path would be to assign a fixture group for each restroom and calculate the associated FTEs for each (estimated based on the number of fittings per restroom). In any case I would suggest providing a narrative supporting your project and rationale for FTE’s daily uses for each restroom. Yes, the fixture group for the new female only WCs has 100:0 ratio of females to males as there will be no males using these bathrooms. Regarding the accessible restroom without urinals, the calculations in the form automatically assume that 100% of male occupants will use restrooms; therefore, the default Total Daily Uses for water closets will need to be adjusted. Alternatively, you could set the female ratio to 100:0 here as well and get the same results. Hope helpful!

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