Intent 1:
To limit the probability of:
- lintels that are inadequate in size or have an excessive
span, which could lead to the excessive deflection or failure of lintels,
which could lead to the cracking or structural failure of masonry
veneer over openings, or
- an inadequate bearing area between lintels and supported
masonry veneer, which could lead to shear or compression failure of
masonry veneer.
This is to limit the probability of:
- masonry falling from the building, or
- where masonry construction is part of an environmental
separator, the displacement or failure of required environmental separation
elements, which could lead to deterioration, which could lead to compromised
structural integrity, which could lead to structural collapse.
This is to limit the probability of harm to persons.