Sentence 9.3.1.7.(2)

  1. OS2
  2. OP2
  3. OH1
  4. OH4
  5. OS3
  6. OS1

Objective

OS2 Structural Safety

Attribution

[F20,F61,F55-OS2.3]Applies to elements that support or are part of an environmental separator.

Intent

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.

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