CS-v5 MRc1: Building and Materials Reuse 1-5 points
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Credit language
© Copyright U.S. Green Building Council, Inc. All rights reserved.
Intent
To incorporate reused materials into new building design, thereby reducing embodied carbon, keeping materials in circularity, reducing demand for virgin material sourcing, preserving resources and histories, and increasing demand for reused materials.
Requirements
Option 1. Building Reuse (1–5 points)
Maintain the existing building structure, including floor decking, roof decking, and enclosure. Calculate reuse of the existing project area according to Table 1.
Portions of buildings deemed structurally unsound or hazardous are excluded from the credit calculations.
Table 1. Points for reuse of existing building structure and enclosure elements for New Construction projects
Percentage of Existing Structure and Enclosure Reuse by Project Area | Points |
20% | 1 |
35% | 2 |
50% | 3 |
Table 2. Points for reuse of existing building structure and enclosure elements for Core and Shell projects
Percent of Existing Structure and Enclosure Reuse by Project Area | Points |
10% | 1 |
20% | 2 |
30% | 3 |
40% | 4 |
50% | 5 |
AND/OR
Option 2. Materials Reuse (1–2 points)
- Survey and identify opportunities for materials reuse and/or procurement of reused materials from off-site.
- Reuse materials by keeping them in place or acquiring them from applicable salvage sources or reuse markets and incorporating the materials into the new project design. Specific targeted materials are valued higher because they have high impacts (embodied carbon or pollution) are hard to recycle and significant amounts of these materials end up in landfill.
- For projects with deconstruction or demolition in scope, conduct a salvage assessment prior to deconstruction or demolition activities and identify materials that can be retained on-site or diverted off-site to reuse markets.
- Salvaged materials sent for off-site reuse contribute to MRc5: Construction and Demolition Waste Diversion. Materials retained on-site contribute to this credit option.
Calculate the percent reused per material type according to Equation 1.
Points are achieved according to Table 3.
Equation 1. Reuse % per material type
Reuse % per material type = Amount of material type reused / Total amount of material type in New Construction scope
Table 3. Points for incorporating reused materials
Reuse materials threshold | Points |
Reuse at least 15% of 1 targeted material type OR Reuse at least 15% of 2 other material types OR Reuse an equivalent weighted average of targeted and other material types | 1 point |
Reuse at least 30% of 1 targeted material type OR Reuse at least 15% of 2 targeted material types OR Reuse at least 15% of 4 other material types OR Reuse an equivalent weighted average of targeted and other material types | 2 points |
Table 4. Reuse material types and correlating units
Material type | Unit |
Targeted materials | |
Carpeting | Surface area |
Ceilings | Surface area |
Furniture (ancillary and systems) | Pieces, weight, volume, or floor area |
Interior walls | Linear or surface area |
Other materials | |
Dimensional lumber | Board foot or linear |
Doors | Count |
Casework | Linear |
Floor-covering materials (not including carpet) | Surface area |
Lighting fixtures | Count |
Plumbing fixtures | Count |
Mechanical equipment | Count |
Door hardware | Count |
Project defined other | Project defined |
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Credit language
© Copyright U.S. Green Building Council, Inc. All rights reserved.
Intent
To incorporate reused materials into new building design, thereby reducing embodied carbon, keeping materials in circularity, reducing demand for virgin material sourcing, preserving resources and histories, and increasing demand for reused materials.
Requirements
Option 1. Building Reuse (1–5 points)
Maintain the existing building structure, including floor decking, roof decking, and enclosure. Calculate reuse of the existing project area according to Table 1.
Portions of buildings deemed structurally unsound or hazardous are excluded from the credit calculations.
Table 1. Points for reuse of existing building structure and enclosure elements for New Construction projects
Percentage of Existing Structure and Enclosure Reuse by Project Area | Points |
20% | 1 |
35% | 2 |
50% | 3 |
Table 2. Points for reuse of existing building structure and enclosure elements for Core and Shell projects
Percent of Existing Structure and Enclosure Reuse by Project Area | Points |
10% | 1 |
20% | 2 |
30% | 3 |
40% | 4 |
50% | 5 |
AND/OR
Option 2. Materials Reuse (1–2 points)
- Survey and identify opportunities for materials reuse and/or procurement of reused materials from off-site.
- Reuse materials by keeping them in place or acquiring them from applicable salvage sources or reuse markets and incorporating the materials into the new project design. Specific targeted materials are valued higher because they have high impacts (embodied carbon or pollution) are hard to recycle and significant amounts of these materials end up in landfill.
- For projects with deconstruction or demolition in scope, conduct a salvage assessment prior to deconstruction or demolition activities and identify materials that can be retained on-site or diverted off-site to reuse markets.
- Salvaged materials sent for off-site reuse contribute to MRc5: Construction and Demolition Waste Diversion. Materials retained on-site contribute to this credit option.
Calculate the percent reused per material type according to Equation 1.
Points are achieved according to Table 3.
Equation 1. Reuse % per material type
Reuse % per material type = Amount of material type reused / Total amount of material type in New Construction scope
Table 3. Points for incorporating reused materials
Reuse materials threshold | Points |
Reuse at least 15% of 1 targeted material type OR Reuse at least 15% of 2 other material types OR Reuse an equivalent weighted average of targeted and other material types | 1 point |
Reuse at least 30% of 1 targeted material type OR Reuse at least 15% of 2 targeted material types OR Reuse at least 15% of 4 other material types OR Reuse an equivalent weighted average of targeted and other material types | 2 points |
Table 4. Reuse material types and correlating units
Material type | Unit |
Targeted materials | |
Carpeting | Surface area |
Ceilings | Surface area |
Furniture (ancillary and systems) | Pieces, weight, volume, or floor area |
Interior walls | Linear or surface area |
Other materials | |
Dimensional lumber | Board foot or linear |
Doors | Count |
Casework | Linear |
Floor-covering materials (not including carpet) | Surface area |
Lighting fixtures | Count |
Plumbing fixtures | Count |
Mechanical equipment | Count |
Door hardware | Count |
Project defined other | Project defined |