LEED AP with Operations and Maintenance (O+M ) Practice Exam

The correct illuminance range for daylight measurements in compliant spaces is between 300 lux and 3,000 lux. This range is aligned with the goals of achieving adequate daylighting in interior spaces to enhance occupant comfort and productivity.

Daylight measurements are taken to ensure that spaces receive enough natural light while minimizing reliance on artificial lighting, which can help reduce energy consumption. The specified range establishes a balance, ensuring spaces are both sufficiently illuminated for typical tasks and capable of providing the benefits associated with natural light exposure without overwhelming brightness that can cause discomfort.

Spaces that fall within this illuminance range are more likely to support well-being, productivity, and overall satisfaction among occupants, making it a key parameter in sustainable building practices, particularly under the LEED O+M rating system.