Sentence 9.28.1.2.(3)

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.

This is to limit the probability of:

• precipitation or meltwater ingress, which could lead to deterioration, which could lead to the structural failure of chimneys, or
• stucco detaching and falling from the building.

This is to limit the probability of harm to persons.