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3.4.4.2.(1) | Application | Intent |
| OS1 |
| 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).
Exceptions:
except as stated in Sentence 3.4.4.2.(2), which permits one exit from a floor area to lead
through a lobby if certain conditions are met.
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| Intent | Intent 1: To limit the probability that a fire that has spread into
a lobby from an adjacent floor area will 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. Intent 2: To limit the probability that a fire that has spread into
a lobby from an adjacent floor area will lead to untenable conditions in the
exit, which could lead to 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. |
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