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

Male occupant usage w/ family rstrm next to gang rstrms

Since the default assumption is that 100% of male occupants will use a restroom with a urinal, how do you calculate the usage when there is a family toilet (without a urinal) next to the large gang restroom? My guess is that a certain % of the male (and female) population is assumed to use the family toilet in lieu of the gang restroom. However, what would that percentage be? Any ideas of where I could derive an idea of that percentage? Although the family toilet is ADA accessible, there is also an ADA toilet stall in each of the gang restrooms, so I can't use the ADA calculation to determine the % of people requiring the usage of the family toilet. Any guidance/ideas would be appreciated! Thanks.

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Wed, 12/30/2015 - 21:28

Hi Renee, If your project does not contain urinals in every male (including unisex) restroom, then the default Total Daily Uses for water closets and urinals must be adjusted in the form accordingly. You will need to provide a narrative and supporting daily use calculations to explain the anticipated urinal usage based on your project parameters. We have calculated the percentage based on the overall fixture counts in the project.

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