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5.4.1.1.(1) | Application | Intent |
OH1 | OS2 | OS3 | OS1 |
Objective | OS2 Structural Safety |
Attribution | |
Application | Application 1: Properties and position of materials and components
installed to control air leakage and permit venting to the exterior as part
of an air barrier system.
Application 2: This also applies to the position of low air and vapour
permeance materials within the building assembly
relative to the position of materials providing thermal resistance in the
assemblies of buildings to which Part 9 applies
[see Sentence 1.3.3.3.(1) of Division A for application of Part 9], where
the building assembly:
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Intent | Intent 1: To limit the probability of the inadequate control of air
leakage or inadequate venting, which could lead to deterioration, which could
lead to compromised structural integrity of environmental separators or of
elements supported or protected by the separators, which could lead to structural
failure, which could lead to harm to persons. Intent 2: To limit the probability of the inadequate control of air
leakage or inadequate venting, which could lead to uncontrolled heat loss
due to air mass transfer, which could lead to ice damming, which could lead
to damage to environmental separators or to elements supported or protected
by the separators, which could lead to structural failure, which could lead
to harm to persons. |
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