The Ontario Building Code | Storage and Dispensing Rooms for Flammable Liquids and Combustible Liquids
3.3.6.4. Storage and Dispensing Rooms for Flammable Liquids and Combustible Liquids
(1) A room intended for the storage of flammable liquids and combustible liquids shall be separated from the remainder of the building by a fire separation having a fire-resistance rating in conformance with the Fire Code made under the Fire Protection and Prevention Act, 1997.
(2) Except as provided by Sentences (3) and (4), a room intended for the storage or dispensing of Class IA or Class IB liquids in open containers shall be designed to prevent critical structural and mechanical damage from an internal explosion in accordance with good engineering practice, such as that described in nfpa 68, "Explosion Protection by Deflagration venting ="http://thehandyforce.com/interior/bathroom-renovations/" title ="Toronto Bathroom renovation inspiration">venting".
(3) Sentence (2) does not apply to a room intended for the storage of distilled beverage alcohol.
(4) A room in an occupancy or facility covered by Regulation 851 of the Revised Regulations of Ontario, 1990 (industrial Establishments), made under the Occupational Health and Safety Act, or Ontario Regulation 67/93 (Health Care and residential Facilities), made under that Act, where Class IA liquids are intended to be stored in closed containers or Class I liquids are intended to be dispensed or stored in open containers, shall be designed to prevent critical structural and mechanical damage from an internal explosion in accordance with good engineering practice, such as that described in nfpa 68, "Explosion Protection by Deflagration venting ="http://thehandyforce.com/interior/bathroom-renovations/" title ="Toronto Bathroom renovation inspiration">venting".
(5) A dispensing room in an occupancy or facility described in Sentence (4) which has an area greater than 15 m2or in which the travel distance from any point to the nearest egress door is more than 4.5 m shall,
(a) be located in a floor area that has at least two exits, and
(b) have at least two egress doors.
(6) An egress door serving a room described in Sentence (5) shall,
(a) be equipped with a self-closing device, and
(b) swing on a vertical axis in the direction of travel to the exit.
(7) The minimum distance between the egress doors described in Clause (5)(b) shall be not less than three-quarters of the maximum diagonal dimension of the room.
(8) The travel distance within the room to the nearest egress door described in Clause (5)(b) shall be not more than 23 m.