A project will reduce water usage inside of the project space. Which calculation

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试卷: LEED AP ID+C 模拟试卷A[查看]
A project will reduce water usage inside of the project space. Which calculations are not required for Water Efficiency Credit, Water Use Reduction?
A: Number of occupants
B: Monthly baseline flush usage
C: Flow rates of flush fixtures
D: Ratio of men to women

参考答案: B

本题解释:
See Water Efficiency Credit, Water Use Reduction, Calculations

The baseline and design case compute annual water use. Here is an example:

A project has 100 FTEs with a 50/50 ratio of men to women.

Men are assumed to use water closets 1 time per day and urinals 2 times per day.
Women are assumed to use water closets 3 times per day.

Using the EPAct baseline fixture rates we have:

4 water closet uses X 1.6 gpf = 6.4 gallons

2 urinal uses X 1.0 gpf = 2 gallons

If the project is installing 1.0 gpf High Efficiency Toilets (HETs) and waterless urinals, for the design case we get:

4 water closet uses X 1.0 gpf = 4 gallons

2 urinal uses X 0 gpf = 0 gallons

Note we did not include the faucet uses or the estimated work days. However if both of these values are fixed we can easily determine the percent reduction.

4 gallons / 6.4 gallons = 62.5%, so the project achieved a 37.5% reduction.