Urinals in each restroom?

LEED does not require you to install urinals at all nor does it say if you put them 'here' then you must put them 'there'. The water use design versus baseline cases must be the same and account for the same use for each type of fixture. Water savings is based on occupancy use and fixture efficiency and not on the number of fixtures. If you were to choose to install urinals in 50% of the male restrooms, then 50% of your male population would have access to urinals and you would build your baseline and design cases around that.

Hi Marco, Susan is completely right, but please note that the calculations get a little more complex if you don't have urinals in every male restroom, and your water reduction will be majorly impacted. Given the baselines we are comparing to, low flow urinals at 0.125 gpm offer a big savings over the 1.0 gpm baseline. Likely much more so than a 1.28 gpm toilet or dual flush vs the 1.6 gpm baseline. Especially if half your males will be using the toilet all three uses instead of 1 use toilet and 2 uses urinal.