2.2.7.9.Exit Stairs and Fire Escapes

(1) Where an exterior doorway used as an exit is more than 300 mm above adjacent ground level, a stair or fire escape
  shall be provided.

  (2) Where the bottom of an openable window or panel used as an exit is more than 2 500 mm above adjacent ground
  level, a stair or fire escape shall be provided.

  (3) Fire escapes required by Sentences (1) and (2) shall conform to Articles 3.4.7.2. and 3.4.7.4. to 3.4.7.7.

  (4) Exit stairs shall conform to Clause 3.4.6.1.(1)(a) and Articles 3.4.6.3. to 3.4.6.6. and 3.4.6.8.

  (5) The minimum width of exit stairs shall be 900 mm.

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Code text is reproduced for reference from the Ontario Building Code (O. Reg. 163/24, 2024 Building Code Compendium). This page is provided for general information and is not an official copy. Always verify requirements against the official Ontario Building Code and confirm with your local building department.