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LEED v4.1

Commercial Interiors

Materials and Resources
Interiors Life-Cycle Impact Reduction

LEED CREDIT

CI-v4.1 MRc2: Interiors life-cycle impact reduction 1-4 points

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Credit language

USGBC logo

© Copyright U.S. Green Building Council, Inc. All rights reserved.

Intent

To encourage adaptive reuse and optimize the environmental performance of products and materials.

Requirements

Option 1. Interior Furniture and Nonstructural Elements Reuse (1-3 points)
Reuse interior nonstructural elements and furniture. Hazardous materials that are remediated as a part of the project must be excluded from the calculation.

Path 1: Furniture and Interior Nonstructural Elements Reuse: Compile the total cost for the project’s reused and new nonstructural elements and furniture. Include all of the following elements in the project, as applicable to the scope of work: flooring, wall panels, ceilings, and furniture. Determine elements of the project that are reused and calculate the percentage of overall reuse based on cost according to the table below. Table OR

Path 2: Furniture Reuse or Interior Nonstructural Elements Reuse: Compile the total cost for either the project’s nonstructural elements or furniture. For interior nonstructural elements, compile the total project cost for all of the following reused and new materials as applicable to the scope of work: flooring, wall panels, and ceilings. For furniture, include the total project cost for reused and new furniture. Determine the percentage of reuse for either nonstructural elements or furniture based on cost according to the table below. Table AND/OR

Option 2. Design for Flexibility and Disassembly (1-2 points)
Conduct an integrative planning process to increase the useful life of the project space. Incorporate interior elements that facilitate space flexibility and disassembly of components throughout the service life of the building interior. Implement floor and ceiling product category strategies in the project for 1 point, or incorporate 2 or more product category strategies for 2 points, one of which must be floors & ceilings:
  • Floors & Ceilings (required): at least 50% of the interior space has accessible and demountable systems for both the floor and ceiling assemblies that allow for easy reconfiguration and access to systems including lighting, data, and voice. Calculate the area where both floor and ceiling components are accessible and demountable, divided by project completed floor area.
  • Nonstructural Walls: at least 50% of nonstructural walls are demountable. Calculate by surface area of nonstructural walls in the completed project.
  • Furniture Systems: at least 50% of the furniture systems with partitions and/or workstations are demountable, expandable, or convertible. Exclude ancillary furniture. Calculate by number of workstations or the completed floor area.
  • Other Interior Finishes: at least 50% of finishes and accessories installed are demountable, expandable, and moveable. Calculate by surface area or completed floor or ceiling area.
  • OR

    Option 3. Building Interiors Life Cycle Assessment (1-3 points CI and Retail)

    Path 1: Conduct a life cycle assessment of the project’s interior (1 point) For tenant improvements and renovation projects, conduct a life-cycle assessment of the project’s entire scope of work, including structure and enclosure (if any), ceiling, wall, flooring, interior partition assemblies including acoustic insulation, metal framing, finishes, coatings and furnishings. LCA data sets must be compliant with ISO 14044.

    Path 2: Meet the requirements of Path 1 and conduct a life cycle assessment of the project’ s interior design compared against a baseline interiors project (2 points).

    Path 3: Meet the requirements of Path 2 and incorporate building reuse and/or salvage materials into the project’s scope of work. Demonstrate reductions compared with the interiors project baseline of at least 20% for global warming potential and demonstrate at least 10% reduction in two additional impact categories listed below (3 points).

    For Paths 2 and 3: The baseline and proposed interior projects must be of comparable size, function and operating energy performance as defined in EA Prerequisite Minimum Energy Performance. The service life of the baseline and proposed building interior must be the same to fully account for maintenance and replacement and must be a minimum of 20 years. Baseline assumptions must be based on standard design and material selection for the project location and building type. Use the same life-cycle assessment software tools and data sets to evaluate both the baseline building interior and the proposed building interior, and report all listed impact categories. Data sets must be compliant with ISO 14044.

    For Path 3, no more than one impact category assessed as part of the life-cycle assessment may increase compared with the baseline interiors project. Include a narrative of how the life cycle assessment was conducted and what changes were made to proposed interior design in order to achieve the related impact reductions.

    Select at least three of the following impact categories for reduction, one of which must be GWP:

    • global warming potential (greenhouse gases), in kg CO2e;
    • depletion of the stratospheric ozone layer, in kg CFC-11e;
    • acidification of land and water sources, in moles H+ or kg SO2e;
    • eutrophication, in kg nitrogen eq or kg phosphate eq
    • formation of tropospheric ozone, in kg NOx, kg O3 eq, or kg ethene;
    • depletion of nonrenewable energy resources, in MJ using CML / depletion of fossil fuels in TRACI
    See all forum discussions about this credit »

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    USGBC logo

    © Copyright U.S. Green Building Council, Inc. All rights reserved.

    Intent

    To encourage adaptive reuse and optimize the environmental performance of products and materials.

    Requirements

    Option 1. Interior Furniture and Nonstructural Elements Reuse (1-3 points)
    Reuse interior nonstructural elements and furniture. Hazardous materials that are remediated as a part of the project must be excluded from the calculation.

    Path 1: Furniture and Interior Nonstructural Elements Reuse: Compile the total cost for the project’s reused and new nonstructural elements and furniture. Include all of the following elements in the project, as applicable to the scope of work: flooring, wall panels, ceilings, and furniture. Determine elements of the project that are reused and calculate the percentage of overall reuse based on cost according to the table below. Table OR

    Path 2: Furniture Reuse or Interior Nonstructural Elements Reuse: Compile the total cost for either the project’s nonstructural elements or furniture. For interior nonstructural elements, compile the total project cost for all of the following reused and new materials as applicable to the scope of work: flooring, wall panels, and ceilings. For furniture, include the total project cost for reused and new furniture. Determine the percentage of reuse for either nonstructural elements or furniture based on cost according to the table below. Table AND/OR

    Option 2. Design for Flexibility and Disassembly (1-2 points)
    Conduct an integrative planning process to increase the useful life of the project space. Incorporate interior elements that facilitate space flexibility and disassembly of components throughout the service life of the building interior. Implement floor and ceiling product category strategies in the project for 1 point, or incorporate 2 or more product category strategies for 2 points, one of which must be floors & ceilings:
  • Floors & Ceilings (required): at least 50% of the interior space has accessible and demountable systems for both the floor and ceiling assemblies that allow for easy reconfiguration and access to systems including lighting, data, and voice. Calculate the area where both floor and ceiling components are accessible and demountable, divided by project completed floor area.
  • Nonstructural Walls: at least 50% of nonstructural walls are demountable. Calculate by surface area of nonstructural walls in the completed project.
  • Furniture Systems: at least 50% of the furniture systems with partitions and/or workstations are demountable, expandable, or convertible. Exclude ancillary furniture. Calculate by number of workstations or the completed floor area.
  • Other Interior Finishes: at least 50% of finishes and accessories installed are demountable, expandable, and moveable. Calculate by surface area or completed floor or ceiling area.
  • OR

    Option 3. Building Interiors Life Cycle Assessment (1-3 points CI and Retail)

    Path 1: Conduct a life cycle assessment of the project’s interior (1 point) For tenant improvements and renovation projects, conduct a life-cycle assessment of the project’s entire scope of work, including structure and enclosure (if any), ceiling, wall, flooring, interior partition assemblies including acoustic insulation, metal framing, finishes, coatings and furnishings. LCA data sets must be compliant with ISO 14044.

    Path 2: Meet the requirements of Path 1 and conduct a life cycle assessment of the project’ s interior design compared against a baseline interiors project (2 points).

    Path 3: Meet the requirements of Path 2 and incorporate building reuse and/or salvage materials into the project’s scope of work. Demonstrate reductions compared with the interiors project baseline of at least 20% for global warming potential and demonstrate at least 10% reduction in two additional impact categories listed below (3 points).

    For Paths 2 and 3: The baseline and proposed interior projects must be of comparable size, function and operating energy performance as defined in EA Prerequisite Minimum Energy Performance. The service life of the baseline and proposed building interior must be the same to fully account for maintenance and replacement and must be a minimum of 20 years. Baseline assumptions must be based on standard design and material selection for the project location and building type. Use the same life-cycle assessment software tools and data sets to evaluate both the baseline building interior and the proposed building interior, and report all listed impact categories. Data sets must be compliant with ISO 14044.

    For Path 3, no more than one impact category assessed as part of the life-cycle assessment may increase compared with the baseline interiors project. Include a narrative of how the life cycle assessment was conducted and what changes were made to proposed interior design in order to achieve the related impact reductions.

    Select at least three of the following impact categories for reduction, one of which must be GWP:

    • global warming potential (greenhouse gases), in kg CO2e;
    • depletion of the stratospheric ozone layer, in kg CFC-11e;
    • acidification of land and water sources, in moles H+ or kg SO2e;
    • eutrophication, in kg nitrogen eq or kg phosphate eq
    • formation of tropospheric ozone, in kg NOx, kg O3 eq, or kg ethene;
    • depletion of nonrenewable energy resources, in MJ using CML / depletion of fossil fuels in TRACI
    See all LEEDuser forum discussions about this credit » Unsubscribe from discussions about CI-v4.1 MRc2