The USGBC raised the following query in our project design stage review:
"It is not clear that the shower usage reported accurately reflects the usage patterns of the project. Given the program of this project, it is not clear that the standard usage rates for the shower fixture, as outlined in the LEED Reference Guide for Green Building Design and Construction, 2009 Edition (Updated June 2010), would be applicable to this project."
The building has changing rooms and I think their point is that shower use in changing rooms differs from private shower use rates. I can't however find any standard/guidance to refer to for an alternative shower use rate for changing facilities. Can anyone oblige?