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9.28.1.2.(3)
ApplicationIntent
OS1OS2OS3OP1OH1
ObjectiveOS1 Fire Safety
Attribution
[F20,F21-OS1.1]
Application
Application 1: 
Reinforcing for stucco applied over masonry chimneys, 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 inadequate strength to resist the stresses induced by the thermal expansion and contraction of masonry chimneys, which could lead to the delamination or cracking of stucco under gravity, wind or impact loads, or freeze-thaw stresses.
Where stucco provides required protection from precipitation, this is to limit the probability of precipitation or meltwater ingress, which could lead to the premature failure of chimney liners, which could lead to the escape of heat or flames, which could lead to the ignition of combustible building components, which could lead to harm to persons.
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