You are building an industrial building for a mixed workforce. The day shift will have about 200 employees, and about 20 employees will be needed to work both the swing and the graveyard shifts to keep the machines running. Shower facilities will be provided. You originally want to use automatic controls (metering) on the lavatory faucets.

A. Calculate a baseline water usage.

B. Your design will be using HET single flush pressure assist water closets, low-flow urinals, and low-flow showers. What LEED 2009 WE points might you earn?

C. You would like to earn the EP point for LEED 2009 WEc2 by plumbing graywater or rainwater to the water closets and urinals. What minimum average monthly volume of these waters will you need to provide in order to accomplish this?