Requirement:
c
Description:
Able to produce a maintained average of at least 10 to 30 lux [1 to 3 fc] as measured on vertical surfaces 1.5 m [5 ft] above the ground.
Support Threshold:
ANSI RP-3-13 notes that a recent study found 30 lx was required for a perception of safety at night and that this perception decreased when illuminance fell below 10 lx. Also noted that illumination should be provided at 1.5 m for facial recognition.
Part:
Sufficient Lighting
RecDocTitile:
American National Standard Practice on Lighting for Educational Facilities