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9.6.7.2.(1)
OH1OS2
ObjectiveOS2 Structural Safety
Attribution
Application
Application 1: 
Thermal breaks for metal frames for doors, for glazing in doors, and for sidelights for doors, in buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9].
Exceptions: 
except for:
  • garage doors [see Clause 9.6.7.2.(2)(a)],
  • storm doors [see Clause 9.6.7.2.(2)(b)], and
  • doors that are required to have a fire-resistance rating [see Clause 9.6.7.2.(2)(c)].
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Intent
Intent 1: 
To limit the probability of inadequate resistance to thermal conduction, which could lead to excessive cooling of the interior surfaces of metal frames and adjacent air, which could lead to condensation.
This is to limit the probability of deterioration, which could lead to negative effects on the structural integrity of building components, which could lead to harm to persons.
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