The Ontario Building Code | Lighting
18.104.22.168. lighting="http://thehandyforce.com/electrical/" title ="East York Electrician">lighting
(1) Walkways and platforms shall be equipped to provide illumination to an average level not less than 50 lx at floor or tread level and at angles and intersections at changes of level where there are stairs or ramps.
(2) Emergency lighting="http://thehandyforce.com/electrical/" title ="East York Electrician">lighting on walkways, platforms, unenclosed egress stairs and exits providing means of egress shall conform to not less than,
(a) the illumination level in Sentences 22.214.171.124.(2) and (3), and
(b) the duration in Sentence 126.96.36.199.(1).