Back9.8.3.2.(1)

ATTRIBUTION:

Functional Statement:

F30

To minimize the risk of injury to persons as a result of tripping, slipping, falling, contact, drowning or collision.

F10

To facilitate the timely movement of persons to a safe place in an emergency.

Objective:

OS3.1, OS3.7

 

APPLICATION:

Minimum number of risers for interior flights of stairs, in buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9].

INTENT:

To limit the probability that users will not see the steps, which could lead to:
  • persons tripping or falling, or
  • persons tripping or falling in an emergency, which could lead to delays in evacuation or movement of persons to a safe place.
This is to limit the probability of harm to persons.