Sentence 9.20.9.1.(1)

Intent 1:

To limit the probability of an inadequate resistance to in-plane and transverse shear stresses, which could lead to cracking or structural failure of vertical mortar joints.

This is to limit the probability of compromised structural integrity, which could lead to:

• structural failure of masonry construction, or
• where masonry construction is part of an environmental separator, the excessive deformation, displacement or failure of required environmental separation elements, which could lead to deterioration, which could lead to further compromised structural integrity.

This is to limit the probability of harm to persons.