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 3.1.17.1.
Article 9.8.5.2 Ontario Regulation 332/12 Building Code, Information published by oncodes.ca for educational purposes only.
Ramps
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)
