A new construction office project located on a military base in Delaware has a b

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试卷: LEED AP BD+C模拟题B[查看]
A new construction office project located on a military base in Delaware 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 gallons during the month of
September. Irrigation and landscaping techniques will have to save how many more
gallons of water to earn Water Efficiency Credit, Water-Efficient Landscaping?
A: 9,688 gallons
B: 30,650 gallons
C: 13,888 gallons
D: 17,063 gallons

参考答案: C

本题解释:
Notes:
Reference: Water Efficiency Credit, Water-Efficient Landscaping, Calculations
To find the answer we must find out the requirement and then subtract the rainwater made
available from the harvesting system.

To earn credits for WE Credit 1 this project will need to meet Option 1 or Option 2. For option 1,
the team must reduce water consumption for irrigation by 50% from the midsummer (July)
baseline.
The baseline is 34,125 gallons. To meet the goal the team would have to use 17,063 gallons or
less.
34,125 X 50% = 17,062.5
The team has 3,175 gallons made available from the rainwater harvesting system in July. The
rainwater from September is not used, because for this credit the calculations are all based on
values from July. The team needs to save 13,888 MORE gallons to reach 17,063. The choice of
13,888 gallons answers the question.
34,125 - 3,175 - 13,887.5 = 17,062.5 or 17,063 gallons which is 50% less than the baseline.
To earn Option 2 the team would have to reduce water for irrigation to zero excluding captured
rainwater. The team would have to save 34,125 - 3,175 = 30,950 gallons. This is not an answer
choice.
The information from September is a distraction and cannot be used because when calculating
the midsummer baseline, July numbers must be used.