What is the minimum illumination required for means of egress measured at the floor?

The minimum illumination required for means of egress is specified to ensure that exit paths are clearly visible, allowing individuals to navigate safely in emergency situations. The correct standard for illumination is 5 lumens per square foot. This level of lighting is considered sufficient to illuminate exit routes, signage, and other critical elements that guide individuals toward safety.

The requirement for 5 lumens per square foot ensures visibility under varying conditions, allowing people to identify exits even if they are accustomed to darker environments. This precaution is vital in maintaining safe evacuation routes, especially during emergencies where visibility may be compromised due to smoke or power outages. Proper illumination is a fundamental aspect of safety regulations aimed at protecting lives in various settings, including workplaces and public buildings.