Photo credit: Hedrich Blessing
Materials & Resources
The goal of the project was to achieve the highest possible LEED rating. As a result, the specification book included the following codes and standards.
3.02 Codes and Standards
A. Comply with LEED Materials Credit 4 requirements:
- Use materials that contain minimum 20% by weight post-consumer recycled content or 40% by weight post-industrial recycled content.
B. Comply with LEED Materials Credit 7 requirements:
- Use a minimum 50% of wood-based materials certified in accordance with the Forest Stewardship Council guidelines for wood building components.
C. Comply with LEED Materials Credit 5 requirements:
- Use building materials that have been manufactured within 500 miles for 20% of total materials.
- Of those 20%, specify at least 50% that were extracted, harvested, or recovered within 500 miles.
Our commitment to sustainable materials was woven throughout the specification book. Each section featured an "environmental considerations" topic addressing specific, relevant environmental concerns. As an example, the following addresses concrete forms:
- Wood used for formwork contributes to irresponsible forest management practices.
- Wood used for formwork ends up in landfills.
- Use non-wood forms made of recycled materials.
- Use wood forms from certified sources.
- Use salvaged wood.
- Re-use form lumber for framing and sheathing.
- Use locally produced materials.
The project earned exemplary performance credit in LEED for both recycled content and regional materials.
Sitework included 100% post-consumer recycled crushed concrete. Concrete rebar was 100% recycled. Structural steel was 90% post-consumer recycled. Metal joists, floor deck, and roof deck were all 95% post-consumer recycled.
Diversion of Construction & Demolition Waste
Just over 50% by weight of the total construction waste was recycled. The remainder was placed in a landfill. Triangle Associates, the project general contractor, implemented a construction waste management plan in which multiple dumpsters were labeled for wood, concrete, scrap metal, cardboard, and general refuse. All subcontractors were expected to comply and dispose of their wastes in the appropriate containers. If they did not comply, they were mandated per contract to re-separate the contents of the appropriate containers and dispose of the materials correctly. If they still did not comply, the work was done by Triangle Associates and back-charged to the subcontractor.
Green Products Used
- Natural Linoleum Flooring
- Recycled-Content and Rapidly-Renewable Acoustical Ceiling Panels
- Recycled-Content Carpet Tile
Design for Materials Use Reduction
- Group or stack bathrooms and other water-using spaces
- Minimize space devoted exclusively to circulation
- Consider the use of structural materials that do not require application of finish layers
- Consider exposing structural materials as finished surfaces
Toxic Upstream or Downstream Burdens
- Use true linoleum flooring
Greenhouse Gas Emissions from Manufacture
- Use concrete masonry units with flyash replacing a portion of the cement
Post-Consumer Recycled Materials
- Prefer insulation with high recycled content
- Specify heavy steel framing with highest recycled content
- Specify carpet tiles made with recycled-content backing
Transportation of Materials
- Prefer materials that are sourced and manufactured within the local area