855773667-LEED-v5-O-M-Reference-Guide-Launch-Edition-1 - Page 087
Extracted Content
Sustainable Sites Credit
HEAT ISLAND REDUCTION
SSc1
1 point
INTENT
To mitigate disparate impacts on microclimates and habitats caused by heat islands and extreme heat events.
REQUIREMENTS
| Achievement pathways | Points |
|---|---|
Existing Buildings | 1 |
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
Area of highre�lectance roof
Area of nonroof measures
0.5
0.75
Area of vegetated roof
≥ [Total site ]
0.5 paving area
≥ [Total site ]
paving area [+Total roof ] 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
- Provide shade over pavement areas, measured in plain view at noon, through:
o Plants or vegetated structures that provide shade over paving areas (including
playgrounds) on the site. For newly installed plants, base shade area on 10-year canopy.
o Vegetated planters.
U.S. Green Building Council LEED v5 Reference Guide for Operations and Maintenance, April 2025 Launch Edition 77