The Ontario Building Code | Fire Alarm System Required
9.10.18.2. Fire Alarm System Required
(1) Except as provided in Sentence (2), a fire alarm system shall be installed,
(a) in every buildingthat contains more than 3 storeys, including storeys below the first storey,
(b) where the total occupant load exceeds 300, or
(c) when the occupant load for any major occupancy in Table 9.10.18.2. is exceeded.
(2) A fire alarm system is not required in a residential occupancy where an exit or public corridor serves not more than 4 suites or where each suitehas direct access to an exterior exit facility leading to ground level.
Table 9.10.18.2.
Maximum Occupant Load for Buildings without Fire Alarm Systems
Forming Part of Sentence 9.10.18.2.(1)
| Item | Column 1 Major Occupancy Classification | Column 2 Occupant Load Above which Fire Alarm System is Required |
| 1. | Residential | 10 (sleeping accommodation) |
| 2. | Business and personal services, mercantile | 150 above or below the first storey |
| 3. | Low- or medium-hazard industrial | 75 above or below the first storey |