Which technique helps maintain lighting levels in a multifamily building?

Which technique helps maintain lighting levels in a multifamily building?

• A. Monitoring lighting with a light meter
• B. Cleaning dirty diffusers or shades
• C. Group relamping
• D. Installing occupancy sensors

Answer: (A)

Maintaining lighting levels in a multifamily building relies on measuring what the actual illumination is and using that information to keep it within the desired range. A light meter provides objective readings of illuminance (lux) in spaces like hallways, stairwells, and common areas, so staff can verify that the lighting meets targets and adjust fixtures, lamp outputs, or replacements to stay on target. This measurement-driven approach directly supports consistent, safe, and comfortable lighting. Cleaning dirty diffusers or shades can improve brightness, but it doesn’t continuously verify or regulate actual levels. Occupancy sensors save energy by turning lights off when spaces aren’t in use, but they don’t ensure a maintained illuminance level during occupancy. Group relamping helps prevent dimming from aging lamps, but it’s a scheduled maintenance activity rather than ongoing monitoring and control of light levels.

Maintaining lighting levels in a multifamily building relies on measuring what the actual illumination is and using that information to keep it within the desired range. A light meter provides objective readings of illuminance (lux) in spaces like hallways, stairwells, and common areas, so staff can verify that the lighting meets targets and adjust fixtures, lamp outputs, or replacements to stay on target. This measurement-driven approach directly supports consistent, safe, and comfortable lighting.

Cleaning dirty diffusers or shades can improve brightness, but it doesn’t continuously verify or regulate actual levels. Occupancy sensors save energy by turning lights off when spaces aren’t in use, but they don’t ensure a maintained illuminance level during occupancy. Group relamping helps prevent dimming from aging lamps, but it’s a scheduled maintenance activity rather than ongoing monitoring and control of light levels.