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3.4.4.1.(1) | Application | Intent |
OS1 | OP1 |
Objective | OS1 Fire Safety |
Attribution | |
Application | Application 1: Minimum fire-resistance rating of fire separations that separate exits from
the remainder of the building. 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:
Exceptions:
except as stated in:
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Intent | Intent 1: To limit the probability that fire will spread into an exit,
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,
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 from one
floor area to another floor area by means of an exit, which could lead to
harm to persons in the other floor area. |
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