Sentence 9.28.6.4.(1)

Intent 1:

To limit the probability of:

• drying before hydration is complete (or inadequate curing), or
• the cracking of stucco due to shrinkage, or gravity or lateral loads.

This is to limit the probability of:

• excessive moisture transfer by capillary action, or
• inadequate strength to resist gravity, lateral, impact or abrasion loads, or freeze-thaw stresses.

Where stucco is applied to masonry chimneys, 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 leakage of carbon monoxide gas into living space, which could lead to the acute poisoning or asphyxiation of persons.