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3.4.2.2.(1)
OS1
ObjectiveOS1 Fire Safety
Attribution
Application
Application 1: 
Means of egress serving mezzanines that are intended for occupancies, 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:
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Intent
Intent 1: 
To limit the probability that egress routes from a mezzanine will become untenable in a fire situation during the time involved in reaching the exits accessible at mezzanine level, 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 clarify that mezzanines are to be provided with exits on the same basis as required for floor areas.
Intent 3: 
In cases where mezzanines are not included in the definition of floor area, this expands the application of Section 3.4. to such mezzanines.
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