855773520-LEED-v5-ID-C-Reference-Guide-Launch-Edition-1 - Page 260

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built quantities and costing them as if they were new. When estimating the cost of reused materials, ensure that the costs reflect comparable products of similar quality, function, and condition. For example, a reused particleboard table cannot be assumed to have the same value as a new hand-carved marble and oak table. Costs must be based on reasonable comparisons to avoid overinflating or underestimating the value of reused items, ensuring transparency and fairness in the assessment process. Teams are suggested to match the reused material to a product with similar material type, design, condition, and functionality, and use sources such as salvage yards or online reuse platforms for cost comparisons.

Equation 1. Percentage of reused nonstructural elements and furniture

Equation 1. Percentage of reused nonstructural elements and furniture 𝑅 𝑅 𝑅 𝑛 𝑛 𝑛 𝑛 𝑛 𝑛 𝑛 𝑒 𝑒 𝑒 𝑒 𝑎 𝑎 𝑓 𝑓 𝑓 𝑓 𝑓 =

𝐶 𝐶 𝑜 𝑟 𝑟 𝑟 𝑛 𝑛 𝑛 𝑛 𝑛 𝑛 𝑛 𝑒 𝑒 𝑒 𝑒 𝑎 𝑎 𝑓𝑢 𝑢 𝑢 𝑢 𝑇 𝑇 𝑇 𝑐 𝑐 𝑜 𝑛 𝑛 𝑎 𝑎 𝑟 𝑟 𝑟 𝑛 𝑛 𝑛 𝑛 𝑛 𝑛 𝑛 𝑒 𝑒 𝑒 𝑒 𝑎 𝑎 𝑓 𝑓 𝑓 𝑓 𝑓 [ × 100 ]

Include all of the following elements in product categories below, as applicable to the project scope of work:

• Flooring . The flooring product category includes all types of hard and soft surface flooring (carpet, ceramic, vinyl, rubber, engineered, solid wood, laminates), wall base, underlayment, and other floor coverings. Subflooring is excluded.

• Wall panels . The wall panels product category includes all nonstructural wall elements (framing and drywall), finish wall treatments (wall coverings, wall paneling, wall tile), surface wall structures such as gypsum or plaster, cubicle/curtain/partition walls, trim, doors, hardware, frames, windows, and window treatments. Removable/interchangeable fabric panels and vertical structural elements are allowed to be included in the calculations. Structural elements such as wall framing, curtain walls, brick or concrete are excluded.

• Ceilings . The ceilings product category includes all ceiling panels, ceiling tile, surface ceiling structures such as gypsum or plaster, suspended systems (including canopies and clouds), and glazed skylights. Overhead structural elements (exposed, finished, and unfinished) are excluded.

• Insulation . The insulation product category includes all thermal and acoustic boards, batts, rolls, blankets, sound attenuation fire blankets, foamed-in place, loose-fill, blown, and sprayed insulation

• Furniture . The furniture product category includes all built-in and stand-alone furniture items, furniture systems, and cabinetry.

U.S. Green Building Council LEED v5 Reference Guide for Interior Design and Construction, April 2025 Launch Edition 249