Intent 1:
To limit the probability that the concrete will
not flow around the aggregate in the typically thin wall and slab
sections used in Part 9 buildings, which could lead to aggregate segregation,
which could lead to:
- reduced compressive strength,
- increased shrinkage and cracking, or
- low resistance to air and moisture transfer.
This is to limit the probability of:
- spalling,
- inadequate performance, or
- premature failure of concrete under expected environmental
or structural loads.
This is to limit the probability of compromised structural
integrity, which could lead to:
- structural failure, or
- where concrete supports or is used in an environmental
separator, the displacement or failure of required environmental separation
elements, which could lead to the deterioration of building elements.
This is to limit the probability of harm to persons.