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3.3.4.2.(4)
OS1OP1
ObjectiveOP1 Fire Protection of the Building
Attribution
(a),(b) [F02,F03-OP1.2]
Application
Application 1: 
Fire-resistance rating of the fire separation required by Sentence 3.3.5.6.(1) [applying to the separation of storage garages], where:
This applies to floor areas or parts of floor areas used or intended for use as residential 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).
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Intent
Intent 1: 
To exempt separations between a dwelling unit and an attached garage from the fire-resistance rating requirements of Sentence 3.3.5.6.(1) on the basis that the dwelling unit and the attached storage garage are sprinklered and separated from the remainder of the building.
This [the separation and sprinkler protection] is to limit the probability that a fire involving the garage will spread to the dwelling unit, which could lead to damage to the building.
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