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What is LEED?
Leadership in Energy and Environmental Design (LEED) is a rating system devised by the United States Green Building Council (USGBC) to evaluate the environmental performance of a building and encourage market transformation towards sustainable design. The system is credit-based, allowing projects to earn points for environmentally friendly actions taken during construction and use of a building. LEED was launched in an effort to develop a “consensus-based, market-driven rating system to accelerate the development and implementation of green building practices.” The program is not rigidly structured; not every project must meet identical requirements to qualify.
These LEED products are currently available:
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LEED – NC v2.2 for New Construction and Major Renovations
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LEED - CS v1.0 for Core and Shell
- LEED – EB v1.0 for Existing Buildings
- LEED – CI v1.0 for Commercial Interiors
- LEED Canada – NC v1.0 is also available.
Detailed information on the LEED program and project certification process is available from USGBC at http://www.usgbc.org/. The program outlines the intent, requirements, technologies, and strategies for meeting each credit. Credits are broken down into individual points. A building requires at least 26 points for certification in LEED-NC v2.2. Silver, gold, and platinum levels are also available.
LEED Certification Levels
- Certified 26 - 32 Points
- Silver 33 - 38 Points
- Gold 39 - 51 Points
- Platinum 52 - 69 Points
How Does Concrete Help Achieve LEED Certification?
Using concrete can help increase the number of points awarded to a building in the LEED system. The following table provides suggestions for earning LEED-NC v2.2 points through the use of cement and concrete products. The credit categories and the credit numbers are those in the LEED rating system. Points must be documented according to LEED procedures in order to be earned. The USGBC website, http://www.usgbc.org/, contains a downloadable “letter template” that greatly simplifies the documentation requirements for LEED v2.2. The potential available points that can be earned with the help of concrete range from 19 to 28.
How Concrete Can Contribute to Points
PROJECT CHECKLIST - LEED– New Construction (NC) v2.2
Sustainable Sites
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Points
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Credit 3
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Brownfield Redevelopment
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1
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| Credit 5.1 |
Site Development, Protect or Restore Habitat
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1
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| Credit 5.2 |
Site Development, Maximize Open Space
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1
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Credit 6.1
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Stormwater Design, Quantity Control
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1
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Credit 6.2
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Stormwater Design, Quality Control
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1
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Credit 7.1
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Heat Island Effect, Non-roof
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1
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Credit 7.2
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Heat Island Effect, Roof
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1
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Energy and Atmosphere
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Prerequisite 2
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Minimum Energy Performance
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Required
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Credit 1
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Optimize Energy Performance
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1 - 10
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Materials and Resources
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Credit 1.1
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Building Reuse, Maintain 75% of Existing Walls, Floors, and Roof
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1
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Credit 1.2
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Building Reuse, Maintain 95% of Existing Walls, Floors, and Roof
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1
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Credit 2.1
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Construction Waste Management, Divert 50%
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1
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Credit 2.2
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Construction Waste Management, Divert 75%
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1
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