# A4.405.3 Recycled Content

Use materials, equivalent in performance to virgin materials with a total (combined) recycled content value (RCV) of:

**Tier 1.** The RCV shall not be less than 10 percent of the total material cost of the project.

**(Equation A4.4-1)**

**Tier 2.** The RCV shall not be less than 15 percent of the total material cost of the project.

**(Equation A4.4-2)**

For the purposes of this section, materials used as components of the structural frame shall not be used to calculate recycled content. The structural frame includes the load bearing structural elements, such as wall studs, plates, sills, columns, beams, girders, joists, rafters and trusses.

**Notes:**

- Sample forms which allow user input and automatic calculation are located at www.hcd.ca.gov/CALGreen.html and may be used to simplify documenting compliance with this section and for calculating recycled content value of materials or assembly products.
- Sources and recycled content of some recycled materials can be obtained from CalRecycle if not provided by the manufacturer.

Total material cost is the total estimated or actual cost of materials and assembly products used in the project. The required total recycled content value for the project (in dollars) shall be determined by Equation A4.4-1 or Equation A4.4-2.

Total material cost shall be calculated by using one of the methods specified below:

**Simplified method.**To obtain the total cost of the project, multiply the square footage of the residential structure by the square foot valuation established pursuant to the ICC Building Valuation Data (BVD) or other valuation data approved and/or established by the enforcing agency. The total material cost is 45 percent of the total cost of the project. Use Equations A4.4-3A or A4.4-3B to determine total material costs using the simplified method.**(Equation A4.4-3A)****(Equation A4.4-3B)****Detailed method.**To obtain the total cost of the project, add the estimated and/or actual costs of materials used for the project, including the structure (steel, concrete, wood or masonry); the enclosure (roof, windows, doors and exterior walls); the interior walls, ceilings and finishes (gypsum board, ceiling tiles, etc.). The total estimated and/or actual costs shall not include fees, labor and installation costs, overhead, appliances, equipment, furniture or furnishings.

Total RCV may be determined either by dollars or percentage as noted below.

**Total recycled content value for the project (in dollars).**This is the sum of the recycled content value of the materials and/or assemblies considered and shall be determined by Equation A4.4-4. The result of this calculation may be directly compared to Equations A4.4-1 and A4.4-2 to determine compliance with Tier 1 or Tier 2 prerequisites.**(Equation A4.4-4)****Total recycled content value for the project (by percentage).**This is expressed as a percentage of the total material cost and shall be determined by Equation A4.4-4 and Equation A4.4-5. The result of this calculation may be directly compared for compliance with Tier 1 (10 percent) or Tier 2 (15 percent) prerequisites.**(Equation A4.4-5)**

The recycled content value of each material (RCV_{M}) is calculated by multiplying the cost of material, as defined by the recycled content. See Equations A4.4-6 and A4.4-7.

**(Equation A4.4-6)**

**(Equation A4.4-7)**

**Notes:**

- If the postconsumer and preconsumer recycled content is provided in pounds, Equation A4.4-7 may be used, but the final result (in pounds) must be multiplied by 100 to show RC
_{M}as a percentage. - If the manufacturer reports total recycled content of a material as one percentage in lieu of separately reporting preconsumer and post-consumer values, the total shall be considered preconsumer recycled material.

Recycled content value of assemblies is calculated by multiplying the total cost of the assembly by the total recycled content of the assembly (RC_{A}), and shall be determined by Equation A4.4-8.

**(Equation A4.4-8)**

If not provided by the manufacturer, Total RC_{A} (percent) is the sum (Σ) of the Proportional Recycled Content (PRC_{M}) of each material in the assembly. RC_{A} shall be determined by Equation A4.4-9.

**(Equation A4.4-9)**

PRC_{M} of each material may be calculated by one of two methods using the following formulas:

**Method 1: Recycled content (postconsumer and preconsumer) of each material provided in percentages**

**(Equation A4.4-10)**

**(Equation A4.4-11)**

**(Equation A4.4-7)**

**Method 2: Recycled content (postconsumer and preconsumer) provided in pounds**

**(Equation A4.4-12)**

**(Equation A4.4-13)**

**Note:** If the manufacturer reports total recycled content of a material as one percentage in lieu of separately reporting preconsumer and postconsumer values, the total shall be considered preconsumer recycled material.

### Related Code Sections

*recycled*

*content*in Section A4.405.3.1 ...

*recycled*

*content*in Section A4.405.3.1 ...

*recycled*

*content*value (RCV) of: Tier 1. The RCV shall ...

*recycled*

*content*value (RCV) of: Tier 1. The RCV shall ...

*recycled*

*content*value for the project (in dollars). This ...