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3.2.5.14.(3)
OS1OP1
ObjectiveOS1 Fire Safety
Attribution
Application
Application 1: 
Separation, with respect to the type of construction, of combustible sprinkler piping from the area served by the sprinkler system and from any other fire compartment.
This applies to wet systems in residential occupancies or other light hazard occupancies, in buildings described in Sentence 1.3.3.2.(1) of Division A in which automatic sprinkler systems are installed.
Application 2: 
This also applies to buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9] in which automatic sprinkler systems are installed, as stated in Sentence 9.10.1.2.(8).
Exceptions: 
except as exempted in:
  • Sentence 3.2.5.14.(4), which permits openings in ceilings, and
  • Sentence 3.2.5.14.(5), which applies to combustible sprinkler piping that has been tested in conformance with ULC/ORD-C199P and has been shown to meet the requirements of that Guide without additional protection.
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Intent
Intent 1: 
To limit the probability that combustible sprinkler piping will not be protected against fire exposure, which could lead to the failure of the piping in a fire situation, which could lead to the fire not being suppressed or controlled, which could lead to the spread of fire to other parts of the building, which could lead to harm to persons.
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