1. OS3


OS3 Safety in Use



Intent 1:

To relax the requirement stated in Sentence in cases where the top or bottom riser of flights of stairs adjoins a sloping finished walking surface.

This is to limit the probability that non-uniform rise will lead to

  • persons misstepping and tripping, or
  • persons misstepping and tripping 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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