Ramp Width

(1)  Except as provided in Sentence (2), ramps shall not be less than 1 100 mm wide.


(2)  Ramps serving a house or an individual dwelling unit shall not be less than 860 mm wide.

(3)  Exit ramps and public ramps serving buildings of other than residential occupancy shall have a clear width of not less than the greater of,

 (a)  900 mm, or               

(b) 8 mm per person based on the occupant load limits specified in Table

Article Ontario Regulation 332/12 Building Code,   Information published by oncodes.ca for educational purposes only.


When a ramp is required for wheelchair access (a barrier-free path of travel) to a house or a house with a secondary suite, certain conditions must be met so that it is safe and easy to use. A level area must be provided at the top and the bottom of the ramp and intermediate level areas are required every 9 m (29 ft.)or where there is a change in direction. The clear width must be at least 870 mm (34¼ in.) and the slope must not be greater than 1:12. Consult the local building department for additional information.

Source : Canada Mortgage and Housing Corporation (CMHC)