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3.2.2.15.(2)
OS1OP1OS1OP1
ObjectiveOS1 Fire Safety
Attribution
(a) [F02,F04-OS1.2,OS1.3]
Application
Application 1: 
Automatic sprinkler system in a basement in a portion of a building that is erected entirely below the adjoining finished ground level and that extends more than one storey below that ground level.
This applies to buildings to which Part 3 applies [see Sentence 1.3.3.2.(1) of Division A for application of Part 3].
Exceptions: 
except as exempted in Sentence 3.2.2.15.(3), which applies to a storey of residential occupancy located immediately below the first storey and that is not required to be sprinklered.
Application 2: 
This also applies to a basement containing more than one storey, in buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9], as stated in Sentence 9.10.1.2.(3).
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Intent
Intent 1: 
To limit the probability that loadbearing walls, columns and arches exposed to fire will prematurely fail or collapse, which could lead to the failure or collapse of supported floor assemblies during the time required to achieve occupant safety and for emergency responders to perform their duties, which could lead to harm to persons.
Intent 2: 
To limit the probability that floor assemblies exposed to fire will prematurely fail or collapse during the time required to achieve occupant safety and for emergency responders to perform their duties, which could lead to harm to persons.
Intent 3: 
To limit the probability that loadbearing walls, columns and arches exposed to fire will prematurely fail or collapse, which could lead to the failure or collapse of supported floor assemblies, which could lead to the spread of fire from a lower storey of a building to an upper storey or to the exterior during the time required to achieve occupant safety and for emergency responders to perform their duties, which could lead to harm to persons.
Intent 4: 
To limit the probability that floor assemblies exposed to fire will prematurely fail or collapse, which could lead to the spread of fire from a lower storey of a building to an upper storey or to the exterior of the building during the time required to achieve occupant safety and for emergency responders to perform their duties, which could lead to harm to persons.
Intent 5: 
To limit the probability that, in the event of a fire, the absence of fire suppression systems within a storey will lead to the growth of fire, which could lead to the spread of fire within the storey during the time required to achieve occupant safety and for emergency responders to perform their duties, which could lead to harm to persons.
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