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9.27.7.5.(4) | Application | Intent |
OH1 | OS2 |
Objective | OS2 Structural Safety |
Attribution | |
Application | Application 1: Minimum projection of outer-course shingle and shake
butts applied in a double-course configuration to lath over sheathing that
is not suitable for direct attachment of shingles or shakes, on 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 water draining down the face
of walls and returning under shingles, shakes or lath, which could lead to
rotting of shingles, shakes or lath, or corrosion of fasteners.
This is to limit the probability of the displacement of shingles
or shakes, trim and flashing, opening of joints or failure of caulking, which
could lead to:
This is to limit the probability of harm to persons.
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