Intent 1:
To exempt exterior exit passageways from the requirements
of Sentence 3.4.4.1.(1) for a rated fire separation, and of Sentences 3.2.3.13.(1) and (3) for the protection of openings, if
certain measures are taken.
This is to limit the
probability that:
- smoke will build up in the exit, which could lead to
untenable conditions in the exit, which could lead to:
- delays in the evacuation or movement of persons to a
safe place, which could lead to harm to persons,
- harm to persons, and
- delays or ineffectiveness in fire emergency response
operations, which could lead to delays in the evacuation or movement
of persons to a safe place, which could lead to harm to persons, including
emergency responders, and
- persons will not have a choice of an alternative egress
route in the case of one route being blocked or obstructed in a fire
situation, which could lead to delays in the evacuation or movement
of persons to a safe place, which could lead to harm to persons.