The Ontario Building Code | Temperature Rise Limit for Doors
3.1.8.15. temperature Rise Limit for doors
(1) Except as permitted by Article 3.1.8.17., the maximum temperature rise on the opaque portion of the unexposed side of a door used as a closure in a fire separationin a location shown in Table 3.1.8.15., shall conform to the Table when tested in conformance with Sentence 3.1.8.4.(1).
Table 3.1.8.15.
Restrictions on temperature Rise and Glazing for Closures
Forming Part of Articles of 3.1.8.15. and 3.1.8.16.
| Item | Column 1 Location | Column 2 Minimum Required Fire-Protection Rating of door | Column 3 Maximum temperature Rise on Opaque Portion of Unexposed Side of door, °C | Column 4 Maximum Area of wireref ="http://thehandyforce.com/electrical/" title ="Electricians in East York">wired glass in door, m2 | Column 5 Maximum Aggregate Area of glass Block and wireref ="http://thehandyforce.com/electrical/" title ="Electricians in East York">wired glass panels not in door, m2 |
| 1. | Between a dead-end corridor and an adjacent occupancy where the corridor provides the only access to exit and is required to have a fire-resistance rating | Less than 45 min | No limit | No limit | No limit |
| 45 min | 250 after 30 min | 0.0645 | 0.0645 | ||
| 2. | Between an exit enclosure and the remainder of the floor area in buildings not more than 3 storeys in building height | All ratings | No limit | 0.8 | 0.8 |
| 3. | Between an exit enclosure and the remainder of the floor area (except as permitted above) | 45 min | 250 after 30 min | 0.0645 | 0.0645 |
|
| 1.5 h | 250 after 1 h | 0.0645 | 0.0645 | |
|
| 2 h | 250 after 1 h | 0.0645 | 0.0645 | |
| 4. | In a firewall | 1.5 h | 250 after 30 min | 0.0645 | 0 |
|
|
| 3 h | 250 after 1 h | 0 | 0 |