D.C. Mun. Regs. tit. 12, r. 12-K505
Strike Section 505 of the International Green Construction Code in its entirety and insert new Section 505 in its place in the Green Construction Code to read as follows:
Material selection and properties. For projects that are 25,000 square feet (2323m 2) and larger, building materials shall conform to Section 505.2, 505.3 or 505.4
Exception: Electrical, mechanical, plumbing, security and fire detection, and alarm equipment and controls, automatic fire sprinkler systems, elevators and conveying systems shall not be required to comply.
Reduced Impact Materials. The building project shall comply with any two of the following: Sections 505.2.1, 505.2.2, or 505.2.3. Calculations shall only include materials permanently installed in the project. A value of 45 percent of the total construction cost shall be permitted to be used in lieu of the actual total cost of materials.
Recycled Content and Salvaged Material Content.
The sum of the recycled content and the salvaged material content shall constitute a minimum of 30 percent, based on cost, of the total materials in the building project.
Recycled Content. The recycled content of a material shall be the postconsumer recycled content plus one-half of the preconsumer recycled content, determined by weight (mass). The recycled fraction of the material in a product or an assembly shall then be multiplied by the cost of the product or assembly to determine its contribution to the requirement.
The annual average industry values, by country of production, for the recycled content of steel products manufactured in basic oxygen furnaces and electric arc furnaces shall be permitted to be used as the recycled content of the steel. For the purpose of calculating the recycled content contribution of concrete, the constituent materials in concrete (e.g., the cementitious materials, aggregates, and water) shall be permitted to be treated as separate components and calculated separately.
Salvaged Material Content. The salvaged material content shall be determined based on the actual cost of the salvaged material or the cost of a comparable alternative component material.
Regional Materials. A minimum of 40 percent of building materials or products used, based on cost, shall be regionally extracted/harvested/recovered and manufactured within a radius of 500 miles (800 km) of the project site. If only a fraction of a product or material is extracted/harvested/recovered and manufactured locally, then only that percentage (by weight) shall contribute to the regional value.
Exception: For building materials or products shipped in part by rail or water, the total distance to the project shall be determined by weighted average, whereby that portion of the distance shipped by rail or water shall be multiplied by 0.25 and added to that portion not shipped by rail or water, provided that the total does not exceed 500 mi (800 km).
Biobased Products. A minimum of 5 percent of building materials used, based on cost, shall be biobased products. Biobased products shall:
Wood Building Components. Wood building components, including but not limited to structural framing, sheathing, flooring, subflooring, wood window sash and frames, doors, and architectural millwork, used to comply with this requirement shall contain not less than 60 percent certified wood content tracked through a chain of custody process, either by physical separation or percentage-based approaches, or wood that qualifies as a salvaged material. Certified wood content shall be certified by the Forest Stewardship Council. Wood building components from a vendor shall be permitted to comply when the annual average amount of certified wood products purchased by the vendor, for which they have chain of custody verification not older than two years, is 60 percent or greater of their total annual wood products purchased.
Whole building life cycle assessment. Life cycle assessment shall conform to the requirements of ASTM E2921. The requirements for the execution of a whole building life cycle assessment shall be performed in accordance with the following:
Multi-attribute material declaration and certification. Not less than 25 percent of the total building materials used in the project, based on cost, shall comply with Section 505.4.1 or 505.4.2. Where a material complies with both Sections 505.4.1 and 505.4.2, the material value shall be multiplied by two.
Environmental product declaration. A building material with a Type III environmental product declaration that is verified by a program operator. The environmental product declaration shall comply with the provisions of ISO 14025 and ISO 21930 and be externally verified.
Multi-attribute standard. A material specific assessment that is verified by an approved agency shall be submitted for each product in accordance with the following standards, as applicable. The assessment shall be verified as meeting the minimum performance level specified in each standard, which focuses on the life-cycle stages from development to end of life. These stages shall include material selection, energy and water use during development, performance, human and environmental impact, and end of life.
D.C. Mun. Regs. tit. 12, r. 12-K505