3.5.3.3.(2)

Objective

OS1 Fire Safety

Attribution

Intent

Intent 1:

To supersede the requirements of Sentence 3.5.3.3.(1), which would otherwise require a room containing elevator machinery to be separated from the elevator hoistway by a fire separation, and waive such separation if certain conditions are met [the room and the hoistway are separated from all other parts of the building].

This is to limit the probability that:

  • a fire involving the room and hoistway will spread to other parts of the building, which could lead to harm to persons in other parts of the building, and
  • a fire will spread from other parts of the building into the room and hoistway, which could lead to:
    • harm to persons in elevator cars in the hoistway, and
    • the failure of the elevator machinery, which could lead to harm to persons in elevator cars.

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