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

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What does a BUG rating classify in terms of luminaire performance?

Backlight, uplight, and glare
Brightness, uniformity, and glare
Color, intensity, and distribution
Efficiency, output, and warmth

The correct answer is: Backlight, uplight, and glare

The BUG rating system classifies luminaire performance based on three key aspects: Backlight, Uplight, and Glare. This system was developed to help evaluate outdoor lighting and its effect on the environment, specifically focusing on minimizing adverse effects on surrounding areas. - Backlight refers to the light emitted in the direction opposite the area being illuminated, which can contribute to light pollution. - Uplight considers the light directed upwards, which can result in skyglow and negatively impact nighttime visibility and ecosystems. - Glare measures the discomfort caused by excessive brightness or contrast, particularly when looking towards bright light sources. By utilizing the BUG rating, designers and builders can choose luminaires that effectively manage these factors, ultimately promoting sustainable lighting practices and enhancing the quality of outdoor spaces.