(1)
Where an unenclosed exterior exit stair or ramp provides the only means of egress from a suite, and is exposed to fire from openings in the exterior walls of another fire compartment, or another dwelling unit, ancillary space or common space in a house with a secondary suite, the openings in the exterior walls of the building shall be protected with wired glass in fixed steel frames or glass block conforming to Articles 9.10.13.5. and 9.10.13.7. when the openings in the exterior walls of the building are within 3 m horizontally and less than 10 m below or less than 5 m above the exit stair or ramp.