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Credit language straight from USGBC
Need to check up on the exact LEED credit language from the LEED Rating System on the fly? LEEDuser includes the verbatim language. Members get:
- Easy access to the official LEED credit language with just a couple of clicks.
- On the jobsite without your bulky LEED Reference Guide? Check up on the credit language details here.
- Credit language content is used by permission of the U.S. Green Building Council.
- Rating System EBOM 2009Existing Building Operations
- Rating System SSSustainable Sites
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Rating System
SSc7.1Heat Island Reduction—Nonroof
- SSc1LEED Certified Design and Construction
- SSc2Building Exterior and Hardscape Management Plan
- SSc3Integrated Pest Management, Erosion Control, and Landscape Management
- SSc4Alternative Commuting Transportation
- SSc5Site Development—Protect or Restore Open Habitat
- SSc6Stormwater Quantity Control
- SSc7.1Heat Island Reduction—Nonroof
- SSc7.2Heat Island Reduction—Roof
- SSc8Light Pollution Reduction
EBOM 2009 SSc7.1: Heat Island Reduction—Nonroof
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2 Comments
Surfaces
Is a gravel driveway considered a pervious surface? Do you need to calculate a SRIThe solar reflectance index (SRI) is a measure of a material's ability to reject solar heat, as shown by a small temperature rise. Standard black (reflectance 0.05, emittance 0.90) is 0 and standard white (reflectance 0.80, emittance 0.90) is 100. For example, a standard black surface has a temperature rise of 90_F (50_C) in full sun, and a standard white surface has a temperature rise of 14.6_F (8.1_C). Once the maximum temperature rise of a given material has been computed, the SRI can be calculated by interpolating between the values for white and black. Materials with the highest SRI values are the coolest choices for paving. Because of the way SRI is defined, particularly hot materials can even take slightly negative values, and particularly cool materials can even exceed 100. for this area?
Tristan Roberts replied Editor – LEEDuser, BuildingGreen, LLC Mar 15 2010
I don't think a gravel driveway is considered pervious, unless it is specifically engineered and maintained to be so. Typically gravel gets packed hard in road situations and is pretty much impervious.
You would need to include it in your SRIThe solar reflectance index (SRI) is a measure of a material's ability to reject solar heat, as shown by a small temperature rise. Standard black (reflectance 0.05, emittance 0.90) is 0 and standard white (reflectance 0.80, emittance 0.90) is 100. For example, a standard black surface has a temperature rise of 90_F (50_C) in full sun, and a standard white surface has a temperature rise of 14.6_F (8.1_C). Once the maximum temperature rise of a given material has been computed, the SRI can be calculated by interpolating between the values for white and black. Materials with the highest SRI values are the coolest choices for paving. Because of the way SRI is defined, particularly hot materials can even take slightly negative values, and particularly cool materials can even exceed 100. calcs, or use one of the other sustainability criteria (shading?).
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