Sentence 9.3.1.5.(1)

  1. OS2
  2. OP2
  3. OH1
  4. OH4
  5. OS3
  6. OS1

Objective

OS3 Safety in Use

Attribution

[F20,F80-OS3.1]Applies to concrete floors or steps, concrete that supports wood-frame floors or steps, and concrete steps that support guards or handrails.
[F20,F80-OS3.4,OS3.7]Applies where concrete supports or is used in chimneys or fireplaces.

Intent

Intent 1:

To limit the probability that water containing an excessive proportion of contaminants will lead to the inadequate strength or accelerated deterioration of concrete under expected environmental or structural loads.

This is to limit the probability of:

  • compromised structural integrity, or
  • where concrete supports or is used in an environmental separator, the displacement or failure of required environmental separation elements, which could lead to the deterioration of building elements, which could lead to compromised structural integrity.

This is to limit the probability of:

  • uneven concrete floor or step surfaces, which could lead to persons tripping,
  • the failure of supported handrails or guards, which could lead to persons falling,
  • the excessive deflection or vibration of supported wood-frame floors, which could lead to persons losing their balance, tripping or falling, and
  • the failure of fireplaces or chimneys, which could lead to the leakage of combustion products, including carbon monoxide gas, into living space, which could lead to the asphyxiation or acute poisoning of persons.

This is to limit the probability of harm to persons.

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