(1) The slope of ramps shall be not more than,
(a) 1 in 10 for exterior ramps,
(b) 1 in 10 for interior ramps serving residential occupancies,
(c) 1 in 6 for industrial occupancies, and
(d) 1 in 8 for all other occupancies.
Article 9.8.5.4 Ontario Regulation 332/12 Building Code, O. Reg. 332/12: BUILDING CODE (ontario.ca) © Queen’s Printer for Ontario, 2021.