9.27.6.3.(2)

Intent 1:

To limit the probability of an inability to:

• accommodate shrinkage due to changes in moisture content, which could lead to opening of joints, or
• effectively shed water.

This is to limit the probability of precipitation or meltwater ingress, which could lead to deterioration, which could lead to the structural failure of exterior walls or elements protected by exterior walls, which could lead to harm to persons.