Intent 1:
To limit the probability of:
- an excessively high cement/aggregate ratio, which could
lead to poor workability, excessive compressive strength and attendant
high shrinkage, which could lead to cracking of grout, or
- an excessively low cement/aggregate ratio, which could
lead to weak, porous grout and inadequate bonding with masonry units
and reinforcing steel.
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, or
- in assemblies exposed to moisture or the exterior, damage
and deterioration.
For floors and elements supporting floors, this is to limit
the probability of excessive movement, deflection or vibration, which
could lead to negative effects on the psychological well-being of
persons.