9.9.4.4. Openings Near Unenclosed Exit Stairs and Ramps

 9.9.4.4. Openings Near Unenclosed Exit Stairs and Ramps

This Article specifies where unprotected openings in exterior walls have to be protected to reduce the risk of fire breaking out through a window and interfering with evacuation from an exterior exit stairway or ramp as a result of excessive heat radiation.

Exterior unenclosed stairs or ramps are also vulnerable to exposure to fire from openings such as windows. Openings located close enough to be an exposure hazard must be protected with wired glass or glass block (Figure 9.9.-3) if the exterior stairs or ramps are the only means of escape.

Quoted from Illustrated Users' Guide - NBC2015

#openings #stairs #ramps #windows