To achieve LEED certification, what percentage of construction waste must be diverted from landfills?
Correct Answer
A) 75%
LEED requires diverting at least 75% of construction and demolition waste from landfills through recycling, reuse, or other methods. This is part of the Materials and Resources credit category in LEED certification.
Why This Is the Correct Answer
LEED (Leadership in Energy and Environmental Design) certification requires construction projects to divert at least 75% of construction and demolition waste from landfills to earn points in the Materials and Resources credit category. This high threshold demonstrates a significant commitment to waste reduction and environmental responsibility. The 75% requirement can be met through various methods including recycling materials, donating reusable items, and selling salvageable components.
Why the Other Options Are Wrong
Option C: 25%
50% represents only half of construction waste diversion, which falls short of LEED's more stringent environmental requirements.
Option D: 50%
25% is too low a threshold for LEED certification standards, which emphasize substantial environmental impact rather than minimal compliance.
Memory Technique
Think 'Three-quarters clean' - 75% means three-quarters of waste must be diverted from landfills for LEED certification.
Reference Hint
Look up LEED certification requirements in the green building/sustainable construction chapter of your contractor reference manual.
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