The baseline water use of a building is 400,000 gallons. What does the design ca

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试卷: LEED AP ID+C 模拟试卷B[查看]
The baseline water use of a building is 400,000 gallons. What does the design case water use need to be to earn Sustainable Sites Credit, Site Selection, Water Use Reduction and exemplary performance under Sustainable Sites Credit, Site Selection, Other Quantifiable Environmental Performance for the building?
A: 180,000 gallons
B: 220,000 gallons
C: 160,000 gallons
D: 240,000 gallons

参考答案: D

本题解释:
The difference between SS Credit 1 Water Use Reduction and WE Credit 1 Water Use Reduction is that the SS credit is for the entire building, and the WE credit is for the tenant space.

In this example the question asks about the entire building. Don\'t confuse the percentages between the credits. SS Credit 1 needs a 30% reduction from the baseline building to earn the credit, and a 40% reduction for exemplary performance. Each is worth 1 point.

For Water Efficiency Credit, Water Use Reduction:

A 30% reduction earns 8 points.
A 35% reduction earns 8 points.
A 40% reduction earns 11 points.

A 45% reduction earns exemplary performance under WE Credit 1. However the question is asking about SS Credit 1 Path 10 which has an exemplary performance threshold of 40%.

Since the baseline building uses 400,000 gallons, the design case needs to save 40% for exemplary performance of SS Credit 1.

400,000 X 40% = 160,000 gallons of water to be saved.

The question asks what the design case water use must be, not how much to save.

400,000 - 160,000 = 240,000 gallons