9.8.9.2.(1)

Objective

OS3 Safety in Use

Attribution

Intent

Intent 1:

To limit the probability that differential movement of the supporting soil will lead to the tilting of large stair units that are difficult to level, which could lead to:

  • persons falling,
  • persons falling in an emergency, which could lead to delays in the evacuation or movement of persons to a safe place.

This is to limit the probability of harm to persons.

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