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3.2.1.4.(1) | Application | Intent |
| OS1 | OP1 |
| Objective | OS1 Fire Safety |
| Attribution | |
| Application | Application 1: Minimum fire-resistance rating of
floor assemblies immediately above basements, in buildings described in Sentence 1.3.3.2.(1) of Division A.
Application 2: This also applies to a crawl space required to be
considered as a basement, as stated in Sentence 3.2.2.9.(1).
Exceptions:
except as exempted in Sentences 3.2.2.42.(3), 3.2.2.43.(3), 3.2.2.44.(3), 3.2.2.45.(3), 3.2.2.46.(3), 3.2.2.47.(3) and 3.2.2.48.(3),
which apply to floor assemblies entirely contained within dwelling
units in a building of residential
occupancy.
|
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| Intent | Intent 1: To limit the probability of the spread of fire from the
basement to an upper storey during the time required to achieve occupant safety
and for emergency responders to perform their duties, which could lead to
harm to persons, including emergency responders. Intent 2: To limit the probability of the premature collapse of the
floor assemblies in a fire situation during the time required to achieve occupant
safety and for emergency responders to perform their duties, which could lead
to harm to persons, including emergency responders. Intent 3: To direct Code users to Articles 3.2.2.20. to 3.2.2.83. for the determination of minimum fire-resistance
ratings for the floor assemblies. |
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