Intent 1:
To limit the probability of an inadequate distribution
of roof or floor loads, which could lead to over-stressing of hollow
masonry units, 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, 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.