SUSTAINABLE SITES and Restoration Sustainable Sites Credit HEAT ISLAND REDUCTION SSc1 1 point
热岛效应削减 SSc1 1分
To mitigate disparate impacts on microclimates and habitats caused by heat islands and extreme heat events.
减轻热岛效应和极端高温事件对微气候和栖息地造成的差异化影响。
Heat Island Reduction Strategies Implement strategies to minimize the project’s overall contribution to heat island effects that meet the criteria outlined in Equation 1 below: Equation 1. Nonroof and roof calculation Area of Area of high- Area of nonroof measures re�lectance roof vegetated roof Total site Total roof + + ≥ + 0.5 0.75 0.5 paving area area Alternatively, a solar reflectance index (SRI) and solar reflectance (SR) weighted average approach may be used to calculate compliance. Use any combination of nonroof, high-reflectance roof, and vegetative roof strategies so that the weighted sum of site design strategies is greater than or equal to the sum of the total pavement and roof areas. Each surface may only be counted once, even if it is addressed through multiple strategies. Nonroof Measures
热岛效应减缓策略 实施策略以减少项目对热岛效应的整体贡献，满足下列公式 1 所列标准： 公式 1 非屋面与屋面计算 高反射率 屋顶绿化 非屋面措施面积 屋面面积 屋面面积 ────────────────── + ────────────────── + ────────────────── ≥ ────────────────── + ────────────────── 总场地铺装面积 0.5 总屋面面积 0.75 总场地铺装面积 0.5 总屋面面积 或可使用太阳反射指数（SRI）和太阳反射率（SR）加权平均方法来计算合规性。结合使用非屋面、高反射率屋面和屋顶绿化策略，使场地设计策略的加权和大于或等于总铺装面积与总屋面面积之和。每一表面只能计入一次，即使通过多种策略对其进行了处理。 非屋面措施
• Provide shade over pavement areas, measured in plain view at noon, through:
• 通过以下方式为铺装区域提供遮阴（正午平视测量）：
Plants or vegetated structures that provide shade over paving areas (including o playgrounds) on the site. For newly installed plants, base shade area on 10-year canopy. Vegetated planters. o Structures covered by energy generation systems, such as solar thermal collectors, o photovoltaics, and wind turbines. Architectural devices or structures. If the device or structure is a roof, it shall have an o aged SR value of at least 0.28 as measured in accordance with ANSI/CRRC S100. If the device or structure is not a roof, or if aged SR information is not available, it shall have an initial SR of at least 0.33 as measured in accordance with ANSI/CRRC S100.
为场地铺装区域提供遮阴的植物或植被结构（新植物按10年冠幅计算）。植被种植池。由能源发电系统覆盖的结构。建筑装置或结构（若为屋顶，老化SR≥0.28，按ANSI/CRRC S100；若非屋顶，初始SR≥0.33）。
• Use paving materials with an initial SR value of at least 0.33.
• 使用初始SR值至少0.33的铺装材料。
• Create an open-grid pavement system (at least 50% unbound).
• 创建开格铺装系统（至少50%为松散材料）。
High-Reflectance Roof Use roofing materials that have an aged SRIsolar reflectance index (SRI) value equal to or greater than the values in Table 1. If an aged SRI is not available, the roofing material shall have an initial SRI equal to or greater than the values in Table 1.
High-Reflectance Roof Use roofing materials that have an aged SRIsolar reflectance index (SRI) value equal to or greater than the values in Table 1. If an aged SRI is not available, the roofing material shall have an initial SRI equal to or greater than the values in Table 1.
Table 1. Minimum Solar Reflectance Index Value, by Roof Slope Slope Initial SRI Aged SRI Low-sloped roof ≤ 2:12 82 64 Steep-sloped roof > 2:12 39 32 A roof area that consists of functional, usable spaces (such as helipads, recreation courts, and similar amenity areas) may meet the requirements of nonroof measures. Applicable roof area excludes roof area covered by mechanical equipment, solar energy panels, skylights, and any other appurtenances. Vegetated Roof If newly installed, sufficient growing medium and plant material must be in place to provide full vegetative cover within three years.
Table 1. Minimum Solar Reflectance Index Value, by Roof Slope Slope Initial SRI Aged SRI Low-sloped roof ≤ 2:12 82 64 Steep-sloped roof > 2:12 39 32 A roof area that consists of functional, usable spaces (such as helipads, recreation courts, and similar amenity areas) may meet the requirements of nonroof measures. Applicable roof area excludes roof area covered by mechanical equipment, solar energy panels, skylights, and any other appurtenances. Vegetated Roof If newly installed, sufficient growing medium and plant material must be in place to provide full vegetative cover within three years.