A building has a baseline irrigation case of 34,125 gallons. The design case use

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试卷: LEED AP ID+C 模拟试卷A[查看]
A building has a baseline irrigation case of 34,125 gallons. The design case uses shrubs, mixed vegetation, and turf grass. The team plans on using a rainwater harvesting system that will make 3,175 gallons available for irrigation in the month of July and 4,000 during the month of September. Irrigation and landscaping techniques will have to be how much more efficient to earn Sustainable Sites Credit 1, Site Selection Path 7, Water Efficient Landscaping-Reduce by 50%?
A: 30,650 gallons
B: 13,888 gallons
C: 17,063 gallons
D: 9,688 gallons

参考答案: B

本题解释:
To find the answer we must find out the requirement and then subtract the rainwater made available from the harvesting system.

For Sustainable Sites Credit, Site Selection, Water Efficient Landscaping-Reduce by 50% the team must reduce water consumption for irrigation by 50% from the midsummer (July) baseline. Do not use numbers from other months.

The base line is 34,125 gallons. To meet the goal the team would have to use 17,063 gallons or less.

34,125 / 2 = 17,062.5

The team has 3,175 gallons made available from the rainwater harvesting system. So the team needs to save 13,888 MORE gallons to reach 17,063. The 13,888 answers the question.

34,125 - 3,175 - 13,887.5 = 17,062.5 or 17,063 gallons which is 50% less than the baseline.

For Sustainable Sites Credit, Site Selection, Water Efficient Landscaping-No Potable Water Use or No Irrigation the team would have to reduce water for irrigation to 0 excluding captured rainwater. The team would have to save 34,125 - 3,175 = 30,950 gallons. This is not an answer choice.