4.0
Materials and Resources
(Continued)
Resource Reuse (2)
4.C3
Intent:
Extend the life cycle of targeted building materials, reducing environmental impacts related to materials
manufacturing and transport.
Requirement:
Specify salvaged or refurbished materials for 5% of building materials.
1
Specify salvaged or refurbished materials for 10% of building materials.
1
Technologies
Commonly salvaged building materials include wood flooring/ paneling/cabinets, doors and frames, mantels, iron
/Strategies:
work and decorative lighting fixtures, brick, masonry and heavy timbers. See the LEED Reference Guide for
calculation tools and guidelines. Determine percentages in terms of dollar value using the following steps:
1. Calculate total dollars* (see exclusions) of the salvaged or refurbished material.
2. Calculate total dollars (see exclusions) of all building materials.
3. Divide Step 1 by Step 2 to determine the percentage.
Exclusions: In total dollar calculations, exclude; labor costs; all mechanical and electrical material and labor
costs; and project overhead and fees. *If the cost of the salvaged or refurbished material is below market value,
use replacement cost to estimate the material value, otherwise use actual cost to the project.
Recycled Content (1)
4.C4
Intent:
Increase demand for building products that have incorporated recycled content material, reducing the impacts
resulting from extraction of new material.
Requirement:
Specify a minimum of 25% of building materials that contain in aggregate a minimum weighted average of
1
20% post-consumer recycled content material, OR, a minimum weighted average of 40% post-industrial
recycled content material.
Specify an additional 25% (50% total) of building materials that contain in aggregate, a minimum weighted
1
average of 20% post consumer recycled content material, OR, a minimum weighted average of 40% post-
industrial recycled content material.
Technologies
Specify building materials containing recycled content for a fraction of total building materials. Select products
/Strategies:
and materials with supporting information from the AIA Resource Guide or the EPA Environmentally Preferable
Purchasing (EPP) Program. Common building materials and products with recycled content include; wall,
partition, and ceiling materials and systems; insulation; tiles and carpets; cement, concrete, and reinforcing
metals; structural and framing steel. For products/materials not listed, selection should be made on the basis of
EPP criterion and/or:
Toxicity;
Embodied energy;
Production use of water, energy and ozone depleting substances (ODSs);
Production limits on toxic emissions and effluents;
Minimal, reusable or recycled/recyclable packaging;
Impact on indoor environmental quality (IEQ);
Installation that limits generation of waste;
Materials that limit waste generation over their life;
EPA guideline compliance; and
Harvested on a sustainable yield basis.
See the LEED Reference Guide for a summary of the EPA guidelines and calculation methodology
guidelines. Determine percentages in terms of dollar value using the following steps:
1. Calculate total dollars (see exclusions) of the material that contain recycled content.
2. Calculate total dollars (see exclusions) of all building materials.
3. Divide Step 1 by Step 2 to determine the percentage.
Exclusions: Labor costs; all mechanical and electrical material and labor costs; project overhead and fees)
(2)
U. S. Green Building Council. Used by permission.
(1)
Adapted material not reviewed or endorsed by U. S. Green Building Council.
Sustainable Project Rating Tool (SPiRiT) v.1.4.1
June 2002
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