An office building has a 20,000 SF roof with a slope less than or equal to 2:12.

PrincessWas

试卷: LEED AP ID+C 模拟试卷C[查看]
An office building has a 20,000 SF roof with a slope less than or equal to 2:12. What approaches would earn Heat Island Reduction: Roof? (choose 2)
A: Install 10,000 SF of vegetated roof
B: Cover the entire roof with a material having an SRI of 78
C: Install 5,000 SF of vegetated roof and cover 5,000 SF of the roof with high albedo surfaces
D: Cover 10,000 SF of roof surface with material having a SRI of 29

参考答案: AB

本题解释:
See Sustainable Sites Credit, Site Selection, Heat Island Reduction, Roof

Option 1: A building with roofing having a Solar Reflectance Index (SRI) greater than or equal to the value in Table 1 for a minimum of 75% of the roof surface;
20,000 sq. ft. * 0.75 = 15,000 sq. ft. roof surface of SRI 78 (the correct choice of 20,000 sq. ft. would exceed this amount)


Option 2: A building that has installed a green (vegetated) roof for at least 50% of the roof area.
20,000 sq. ft. * 0.50 = 10,000 sq. ft. vegetated roof


Option 3: A building having a combination of high SRI roofs and vegetated roofs that satisfy the following area requirement:
Total Roof Area <= [(Area of SRI roof x 1.33) + (Area of vegetated roof x 2)]
This was not given as an answer choice for the question.