A building has a 100,000 SF (9,290 m2) roof. What roofing materials, if present,

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试卷: LEED v4 OM模拟题C卷英文[查看]
A building has a 100,000 SF (9,290 m2) roof. What roofing materials, if present, would qualify the roof for SS Credit Heat Island Reduction?
某建筑有一个十万平方英尺的屋顶，哪种屋顶材料，可以贡献到SS 得分项 热岛效应降低？
A: 50,000 SF (4,645 m2) area of high-reflectance roof 5万平方英尺的高反射屋顶
B: 25,000 SF (2,322 m2) area of vegetated roof 2万5千平方英尺的种植屋顶
C: 20,000 SF (1,858 m2) area of high-reflectance roof and 40,000 SF (3,716 m2) area of vegetated roof 2万平方英尺的高反射屋顶和4万平方英尺的种植屋顶
D: 25,000 SF (2,322 m2) area of high-reflectance roof 2万5千平方英尺的高反射屋顶

参考答案: C

本题解释:
选择C，本题解释A.This does not meet the minimum 75% area for high-reflectance. B.This does not meet the minimum 50% area for vegetated roof. C.Use the weighted equation of the option:
20,000 SF / 0.75 + 40,000 SF / 0.5 >= 100,000 SF
26,666 SF + 80,000 SF = 106,666 SF >= 100,000 SF D.This does not meet the minimum 75% area for high-reflectance.