9.23.11.4.(3)

Objective

OS3 Safety in Use

Attribution

[F22-OS3.1]Applies to floors and elements that support floors.
[F22-OS3.7]Applies to walls, and elements that support walls, that contain doors or windows required for emergency egress.

Intent

Intent 1:

To limit the probability of discontinuity between top plates, which could lead to an inability to resist expected lateral loads, which could lead to the excessive deflection or failure of wall plates.

Where walls support floors, this is to limit the probability of:

  • the excessive deformation of floors, which could lead to compromised operation of doors required for egress in an emergency, or
  • the excessive deflection or vibration of floors, which could lead to persons losing their balance, tripping or falling.

This is to limit the probability of harm to persons.

Intent 2:

To provide a cross-reference to Sentence 9.23.11.4.(4) and thereby further define its application.

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