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试卷: LEED v4 GA模拟题B卷[查看] Which of the following strategies will not reduce the heat island effect caused by nonroof surfaces? A: Planting large native trees for shading B: Increase parking using pervious materials C: Open grid pavement systems that are at least 50% unbound D: Placing at least 25% of the parking under shade 参考答案: B
本题解释: 正确答案:B
系统解析: Knowledge Domain: Sustainable Sites (SS)
For nonroof surfaces, several strategies available to the project include: use trees and vegetative cover that provide shade within 10 years of landscape installation, use open grid pavement materials that are at least 50% unbound (pervious), and use paving materials with a three-year aged solar reflectance (SR) value of at least 0.28.
For roof surfaces, install a vegetated roof or for sloped roofs: use roofing materials for low sloped roofs (≤ 2:12) with a 3-year aged SRI = 64 and for steep sloped roofs (> 2:12) with a 3-year aged SRI = 32. solar reflectance (SR): the fraction of solar energy that is reflected by a surface on a scale of 0 to 1; black paint has a solar reflectance of 0; white paint (titanium dioxide) has a solar reflectance of 1.
solar reflectance index (SRI): a measure of the constructed surface’s ability to stay cool in the sun by reflecting solar radiation and emitting thermal radiation.
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