What are two primary benefits of using pervious materials for hardscapes (parkin

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试卷: LEED v4 GA模拟题B卷[查看]
What are two primary benefits of using pervious materials for hardscapes (parking lots, walks, and patios)?(Choose 2)
A: Decrease heat island effect
B: Improve rainwater quantity
C: Increase site open space
D: Improve rainwater quality
E: Allow collection of water for recycling

参考答案: BD

本题解释:
正确答案：B D
系统解析: Knowledge Domain: Sustainable Sites (SS)

When rain falls in undeveloped areas, the water is absorbed and filtered naturally by soil and plants. However, when rain falls on roofs, streets, parking lots and other impervious surfaces, the water cannot soak into the ground, thereby affecting a site’s natural hydrology. In most urban areas, rainwater is drained through engineered collection systems and discharged into nearby waterbodies. This practice increases water volume, as well as carrying with it trash and pollutants. Higher flows can also cause off-site erosion and flooding in urban streams, damaging habitat, property, and infrastructure. Using pervious surfaces helps restore a site’s natural hydrology by allowing the rainwater to percolate down to the natural soils below the surface, thereby absorbing and filtering the rainwater runoff—quantity and quality control.

Site design and development > rainwater management