What products would be considered pre-consumer recycled content under LEED?

PrincessWas

试卷: LEED GA模拟题F[查看]
What products would be considered pre-consumer recycled content under LEED?


A: Ground up tires used for walkways
B: Salvaged doors
C: Countertops made of glass bottles
D: Concrete containing fly-ash as supplementary cementitious material

参考答案: D

本题解释:
A Tires are a post-consumer recycled material.
B Salvaged doors are a materials that qualify for building reuse.
C Glass bottles are a post-consumer recycled material.
D Fly ash is one of the residues generated in combustion at coal plants. In the US, fly ash is generally stored at coal power plants or placed in landfills. About 43 percent is recycled, often used to supplement Portland cement in concrete production.

Pre-consumer content - formerly known as post-industrial content, is the percentage of material in a product that is recycled from manufacturing waste. Examples include planer shavings, plytrim, sawdust, chips, bagasse, sunflower seed hulls, walnut shells, culls, trimmed materials, print overruns, overissue publications, and obsolete inventories. Excluded are materials such as rework, regrind, or scrap generated in a process and capable of being reclaimed within the same process that generated it (ISO 14021).