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CI-2009 WEc1:Water Use Reduction

Dual toilet flush rate average

If we were to calculate the average flush rate of a dual flush toilet (with urinals present in the space) we use the example average flow rate equation provided by USGBC in their Appendix A water calculation document: [(male full flush uses*full flush rate) + (female full flush uses*full flush rate) + (female low flush * low flush rate)] / (male and female total uses/day) Male full flush uses would be 1 Female full flush uses would be 1 Female low flush uses would be 2 Male and female total uses/day would be 4 If we do not have urinals, how does this equation change? Should we have the total male and female total uses as 6 rather than 4? Would the final equation be the following:? [(male full flush uses*full flush rate) + (female full flush uses*full flush rate) + (male low flush*low flush rate) (female low flush * low flush rate)] / (male and female total uses/day) Male full flush uses would be 1 Female full flush uses would be 1 Male low flush uses would be 2 Female low flush uses would be 2 Male and female total uses/day would be 6 Thanks!

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Mon, 08/19/2013 - 15:51

yes, your dual-flush weighted average calculations outlined above (with and without urinals) are correct.

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