9.10.12.3 — Exterior Walls Meeting at an Angle

(1) Either openings in the exterior walls of an exit or openings in adjacent exterior walls of the building the exit serves shall be protected with wired glass in fixed steel frames or glass block installed in accordance with Articles 9.10.13.5. and 9.10.13.7., where, (a) the exit enclosure has exterior walls that intersect the exterior walls of the building at an angle of less than 135° measured on the outside of the building, and (b) the openings in the exterior walls of the building are within 3 m horizontally and less than 2 m above the openings in the exterior walls of the exit.