What is the MINIMUM illumination for general construction area lighting?

What is the MINIMUM illumination for general construction area lighting?

• A. 2 foot-candles
• B. 5 foot-candles
• C. 8 foot-candles
• D. 10 foot-candles

Answer: (B)

Illumination levels on a construction site are about safety and visibility. The minimum for general construction area lighting is five foot-candles. Foot-candles measure how much light lands on a surface, so five foot-candles means the work surfaces and pathways receive enough light to see edges, read gauges, and spot hazards without excessive glare. This level provides a good baseline; anything less can hide hazards and increase slip, trip, and fall risks. Higher lighting levels are used where tasks require more detail or precision, while the minimum keeps energy use reasonable while maintaining safe conditions.

Illumination levels on a construction site are about safety and visibility. The minimum for general construction area lighting is five foot-candles. Foot-candles measure how much light lands on a surface, so five foot-candles means the work surfaces and pathways receive enough light to see edges, read gauges, and spot hazards without excessive glare. This level provides a good baseline; anything less can hide hazards and increase slip, trip, and fall risks. Higher lighting levels are used where tasks require more detail or precision, while the minimum keeps energy use reasonable while maintaining safe conditions.