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9.26.7.3.(1) | Application | Intent |
| OH1 | OS2 |
| Objective | OS2 Structural Safety |
| Attribution | |
| Application | Application 1: Minimum head lap for asphalt-shingle roofs having
a slope of 1 in 3 or greater, on buildings to which
Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application
of Part 9]. Application 2: This also applies to asphalt shingles installed as
cladding, as stated in Sentence 9.27.1.1.(4). |
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| Intent | Intent 1: To limit the probability of an inadequate head lap, which
could lead to precipitation or meltwater ingress, which could lead to water
penetrating directly to roof decking or sheathing, which could lead to deterioration,
which could lead to the structural failure of roofs or walls or of assemblies
protected by roofs or walls, which could lead to harm to persons.
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