9.9.6.7.Door Latching, Locking and Opening Mechanisms

(1) Principal entrance doors, exit doors and doors to suites, including exterior doors of dwelling units, and other doors in an access to exit shall (a) be openable from the inside or in travelling to an exit without requiring keys, special devices or specialized knowledge of the door-opening mechanism, or (b) be controlled by electromagnetic locking mechanisms in accordance with Sentence 3.4.6.16.(5). (2) Except for doors serving a single dwelling unit or a house with a secondary suite, and doors to accessory buildings and to garages serving a single dwelling unit, door release hardware on doors in a means of egress shall be operable with one hand and the door shall be openable with not more than one releasing operation. (See also Sentence 3.8.3.6.(4) and Note A-3.3.1.13.(4)) (3) Door release hardware on doors in a means of egress shall be installed 900 mm to 1 100 mm above the finished floor. (4) Except for hotels, a door opening onto a public corridor that provides access to exit from suites shall be designed not to lock automatically when such doors are equipped with an automatic self-closing device. (See Note A-3.3.4.5.(1))