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 of masonry construction,
- where masonry construction is part of an environmental
separator, the displacement or failure of required environmental separation
elements, which could lead to deterioration,
- in assemblies exposed to moisture or the exterior, damage
and deterioration, or
- an inability to resist expected loads, which could lead
to:
- the excessive movement or deformation of walls, or
- the excessive deflection or vibration of floors.
This is to limit the probability of:
- the space being unsuitable for its intended use,
- compromised operation of windows or doors, or
- damage to the building.