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,
- 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,
which could lead to further compromised structural integrity, or
- where concrete supports walls or floors, an inability
to resist expected loads, which could lead to
- the excessive deformation or deflection 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 and doors, and
- damage to the building.