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3.4.4.4.(5) | Application | Intent |
| OS1 | OP1 |
| Objective | OS1 Fire Safety |
| Attribution | |
| Application | Application 1: This
applies to exits serving floor
areas that are intended for occupancy, including mezzanines as stated in Sentence 3.4.2.2.(1), in buildings described in Sentence 1.3.3.2.(1) of Division A.
Application 2: This also applies to tents and air-supported
structures, as stated in Sentences 3.1.6.1.(1) and 9.10.1.2.(1). |
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| Intent | Intent 1: To limit the probability that fire will spread into an exit
by means of a plenum, which could lead to delays in the evacuation or movement
of persons to a safe place, which could lead to harm to persons.
Intent 2: To limit the probability that fire will spread into an exit
by means of a plenum, which could lead to emergency responders being delayed
in gaining access to floor areas, which could lead to delays or ineffectiveness
in fire emergency response operations, which could lead to:
Intent 3: To limit the probability that fire will spread into an exit
by means of a plenum, which could lead to the spread of fire from one floor
area to another floor area, which could lead to harm to persons in the other
floor area. |
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