The Ontario Building Code | Doors

3.3.2.6. doors

(1) A door equipped with a latching mechanism in an access to exit from a room or suiteof assembly occupancy containing an occupant load more than 100 shall be equipped with a device that will release the latch and allow the door to swing wide open when a force not more than that specified in Sentence 3.8.3.3.(7) is applied to the device in the direction of travel to the exit.