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9.25.3.2.(1)
OH1OS2OS1OS3
ObjectiveOS3 Safety in Use
Attribution
[F20,F44-OS3.4] Applies where the air barrier system separates a garage, or suite containing a garage, from residential space.
Application
Application 1: 
Characteristics of required air barrier systems, in buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9].
This applies to buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9].
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Intent
Intent 1: 
To limit the probability of an inadequate resistance to air pressure loads, which could lead to:
  • the air barrier rupturing, tearing or puncturing at fasteners, or
  • the opening of joints in the air barrier.
Where the air barrier system separates a garage, or suite containing a garage, from residential space, this is to limit the probability of a loss of airtightness, which could lead to the leakage of carbon monoxide gas into living space, which could lead to the asphyxiation or acute poisoning of persons.
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