The Ontario Building Code | Egress from Roof Area, Podiums, Terraces, Platforms and Contained Open Spaces
9.9.7.1. Egress from Roof Area, Podiums, Terraces, Platforms and Contained Open Spaces
(1) Anaccess to exit shall be provided from every roof intended for occupancy and from every podium, terrace, platform or contained open space.
(2) Where a roof is intended for an occupant load of more than 60 persons, at least two separate means of egressshall be provided from the roof to stairs designed in conformance with the requirements for exit stairs and located remote from each other.
(3) Where a podium, terrace, platform or contained open space is provided, egress requirements shall conform to the appropriate requirements for rooms or suites in Article 9.9.7.4.