1. OS2
  2. OP2
  3. OH1
  4. OS3


OS3 Safety in Use


[F81-OS3.1]Applies to floors and elements that support floors.


Intent 1:

To limit the probability of inappropriate backfill material, which could lead to point loads being applied to foundation walls by boulders in the backfill under lateral soil pressure, which could lead to:

  • the cracking of foundation walls, or
  • damage to a foundation's moisture-control elements.

For floors and elements supporting floors, this is to limit the probability of excessive deflection or damage, which could lead to rough or uneven floor surfaces, which could lead to persons tripping or falling, which could lead to harm to persons.

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