The Ontario Building Code | Exterior Walks
220.127.116.11. exterior Walks
(1) Except as provided in Sentence (2), exterior walks that form part of a barrier-free path of travel shall,
(a) be provided by means of a continuous plane not interrupted by steps or abrupt changes in level,
(b) have a permanent, firm and slip-resistant surface,
(c) except as required in Sentence 18.104.22.168.(4), have an uninterrupted width of not less than 1 100 mm and a gradient not exceeding 1 in 20,
(d) be designed as a ramp where the gradient is greater than 1 in 20,
(f) be free from obstructions for the full width of the walk to a minimum height of 1 980 mm, except that handrails are permitted to project not more than 100 mm from either side into the clear area,
(g) have a level area adjacent to the entrance doorway ="http://thehandyforce.com/doors/" title ="Toronto Door installer">doorway conforming to Clause 22.214.171.124.(1)(c), and
(h) have a tactile attention indicator conforming to Article 126.96.36.199. that is located to identify an entry into a vehicular route or area where no curbs or any other element separate the vehicular route or area from a pedestrian route.
(2) Where a difference in elevation between levels in a walkway is not more than 200 mm, a curb ramp conforming to Sentences (3) and (4) may be provided.
(3) The curb ramp permitted by Sentence (2) shall,
(a) have a running slope conforming to Table 188.8.131.52.,
(b) have a width of not less than 1 500 mm exclusive of flared sides,
(c) have a surface including flared sides that shall,
(i) be slip-resistant,
(iii) have a smooth transition from the ramp and adjacent surfaces, and
(d) have flared sides with a slope of not more than 1:10 where pedestrians are likely to walk across them.
Ramp Rise and Slope
Forming Part of Sentence 184.108.40.206.(3)
Vertical Rise Between surfaces, mm
75 to 200
1:10 to 1:12
less than 75
1:8 to 1:10
(4) Curb ramps described in Sentence (3) do not require handrails or guards.