LEED AP Building Design and Construction (BD+C) Practice Exam

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Prepare for the LEED AP Building Design and Construction Test. Study with flashcards and multiple choice questions, each question includes hints and explanations. Gear up for success!

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What percentage of regularly occupied floor area must achieve daylight illumination for IEQ Credit Daylight?

  1. 50%

  2. 75%

  3. 100%

  4. 25%

The correct answer is: 75%

For the Indoor Environmental Quality (IEQ) Credit for Daylight in LEED BD+C, achieving daylight illumination for a specified percentage of regularly occupied floor area is crucial for promoting occupant well-being and enhancing visual comfort through natural light. The standard established by LEED requires that 75% of the regularly occupied floor area must achieve adequate daylight illumination to qualify for this credit. This requirement stems from research indicating that daylight has numerous benefits, including increased productivity, reduced energy costs, and improved indoor environments. By ensuring that a significant portion of the occupied space receives natural light, projects can enhance the overall quality of the indoor environment, which is a key focus of the LEED rating system. In addition, while other percentages of floor area indicate varying levels of access to daylight, only the achievement of 75% suffices to meet the requirement for this particular credit, making it the correct choice for those pursuing LEED certification.