How is a building’s water savings calculated?

admin

试卷: LEED GA模拟题E[查看]
How is a building’s water savings calculated?
A: By counting the number of fixtures
B: By reviewing water use from utility meters
C: By calculating the percentage reduction from a baseline case to the design case
D: By measuring graywater use

参考答案: C

本题解释:
Notes:

Reference: LEED 2009 for New Construction and Major Renovations Rating System
A:LEED does not use the number of fixtures in any water use reduction calculations. Calculations are based on occupant use and flush/flow rates.
B:Metering is not a strategy used by LEED to calculate water savings.
C:Water demand is calculated by taking a baseline case and then subtracting the installed design case calculations from it based on the fixture flush and flow rates of the FTE occupants.

This differs from calculating landscaping reduction, which uses different measurements (but still uses a design and baseline case).
D:While the quantity of graywater is subtracted from the design case, measuring the graywater use is not the correct answer.