The Ontario Building Code | Egress Doorways
3.3.1.5. Egress doorway ="http://thehandyforce.com/doors/" title ="Toronto Door installer">doorways
(1) Except for dwelling units, a minimum of two egress doorway ="http://thehandyforce.com/doors/" title ="Toronto Door installer">doorways located so that one doorway ="http://thehandyforce.com/doors/" title ="Toronto Door installer">doorway could provide egress from the room or suite as required by Article 3.3.1.3. if the other doorway ="http://thehandyforce.com/doors/" title ="Toronto Door installer">doorway becomes inaccessible to the occupants due to a fire that originates in the room or suite, shall be provided for every room and every suite,
(a) whose area is more than 15 m2and is used for,
(i) a high hazard industrial occupancy, or
(ii) a hazardous room,
(b) intended for an occupant load more than 60,
(c) in a floor area that is not sprinklered if,
(i) the area of a room or suite is more than the value in Table 3.3.1.5.A., or
(ii) the travel distance within the room or suite to the nearest egress doorway ="http://thehandyforce.com/doors/" title ="Toronto Door installer">doorway, is more than the value in Table 3.3.1.5.A.,
(d) in a floor area that is sprinklered and does not contain a high hazard industrial occupancy if,
(i) the travel distance to an egress doorway ="http://thehandyforce.com/doors/" title ="Toronto Door installer">doorway is more than 25 m, or
(ii) the area of the room or suite is more than the value in Table 3.3.1.5.B., or
(e) where the area of the room is more than 100 m2 and it is a hazardous classroom in elementary or secondary school.
Table 3.3.1.5.A.
Egress in floor Area, not Sprinklered
Forming Part of Sentences 3.3.1.5.(1) and (3)
| Item | Column 1 Occupancy of Room or Suite | Column 2 Maximum Area of Room or Suite, m2 | Column 3 Maximum Distance to Egress doorway ="http://thehandyforce.com/doors/" title ="Toronto Door installer">doorway, m |
| 1. | Group A | 150 | 15 |
| 2. | Group C | 150(1) | 25(1) |
| 3. | Group D | 200 | 25 |
| 4. | Group E | 200 | 25 |
| 5. | Group F, Division 2 | 200 | 25 |
| 6. | Group F, Division 3 | 200 | 25 |
Notes to Table 3.3.1.5.A.:
(1) See Article 3.3.4.4. for dwelling units.
Table 3.3.1.5.B.
Egress in Sprinklered floor Area
Forming Part of Sentences 3.3.1.5.(1) and (3)
| Item | Column 1 Occupancy of Room or Suite | Column 2 Maximum Area of Room or Suite, m2 |
| 1. | Group A | 200 |
| 2. | Group B, Division 1 | 100 |
| 3. | Group B, Division 2 or 3 |
|
|
| sleeping rooms | 100 |
|
| other than sleeping rooms | 200 |
| 4. | Group C | 150(1) |
| 5. | Group D | 300 |
| 6. | Group E | 200 |
| 7. | Group F, Division 2 | 200 |
| 8. | Group F, Division 3 | 300 |
Notes to Table 3.3.1.5.B.:
(1) See Article 3.3.4.4. for dwelling units.
(2) Where two egress doorway ="http://thehandyforce.com/doors/" title ="Toronto Door installer">doorways are required by Sentence (1), they shall be placed at a distance from one another equal to or greater than one-third of the maximum overall diagonal dimension of the room or suiteto be served, measured as the shortest distance that smoke would have to travel between the nearest required egress doors.
(3) Except for a mezzanine within a dwelling unit, every mezzaninethat is not required to terminate at a vertical fire separation in Article 3.2.8.2. shall have two egress facilities placed in such a manner that one facility could provide egress from the mezzanine if the other facility becomes inaccessible to the occupants of the mezzanine due to a fire that might originate in the room or suite in which the mezzanine is located,
(a) where the occupancyof the mezzanine, room or suiteis classified as Group F, Division 1,
(b) where the mezzanineis intended for an occupant load of more than 60 persons,
(c) in a floor area that is not sprinklered if,
(i) the area of a mezzanine is more than the value in Table 3.3.1.5.A., or
(ii) the travel distance to an egress doorway ="http://thehandyforce.com/doors/" title ="Toronto Door installer">doorway or an egress facility is more than the value in Table 3.3.1.5.A., or
(d) in a floor area that is sprinklered if,
(i) the travel distance to an egress doorway ="http://thehandyforce.com/doors/" title ="Toronto Door installer">doorway or an egress facility is more than 25 m, or
(ii) the area of the mezzanine is more than the value in Table 3.3.1.5.B.
(4) For the purpose of Clauses (3)(c) and (d),
(a) if the room or suite in which the mezzanineis located is permitted to have one egress doorway ="http://thehandyforce.com/doors/" title ="Toronto Door installer">doorway, the travel distance is measured from any point on the mezzanine to that doorway ="http://thehandyforce.com/doors/" title ="Toronto Door installer">doorway, or
(b) if the room or suite in which the mezzanineis located is required to have more than one egress doorway ="http://thehandyforce.com/doors/" title ="Toronto Door installer">doorway, the travel distance is measured from any point on the mezzanineto the nearest egress facility leading from the mezzanine.
(5) Except for a mezzanine which is not considered as a storey in calculating building height in Sentence 3.2.1.1.(4), where the space below a mezzanine is enclosed, an egress facility from the mezzanine shall not lead into the enclosed space.