Intent 1:
To limit the probability of:
- excessively thick mortar joints in relation to the surface
area of the masonry, which could lead to water leakage through shrinkage
cracks and water absorption through mortar joints, or
- excessively thin mortar joints, which could lead to
inadequate support of masonry or inadequate masonry-to-mortar bond
strength, which could lead to cracking.
This is to limit the probability of
compromised structural integrity, which could lead to:
- structural failure of masonry construction,
- 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, or
- in assemblies exposed to moisture or the exterior, damage
and deterioration, which could lead to further compromised structural
integrity.
This is to limit the probability of harm to persons.