3.3.1.20.Transparent Doors and Panels

(1) Except for dwelling units and as permitted by Sentence (5), a glass or transparent door shall be designed and constructed so that the existence and position of the door is readily apparent, by attaching visually contrasting hardware, bars or other permanent fixtures to it. (2) Fully glazed transparent doors, and fully glazed transparent sidelights and panels with widths greater than 300 mm, shall be marked in conformance with Sentence 3.8.3.3.(15). (3) A glass door shall be constructed of (a) laminated or tempered safety glazing conforming to CAN/CGSB-12.1, “Safety Glazing,” or (b) wired glass conforming to CAN/CGSB-12.11-M, “Wired Safety Glass.” (4) Except as permitted by Sentence (5), transparent panels used in an access to exit that, because of their physical configuration or design, could be mistaken as a means of egress shall be made inaccessible by barriers or railings. (5) Sliding glass partitions that separate a public corridor from an adjacent occupancy and that are open during normal working hours need not conform to Sentences (1) and (4), provided the partitions are suitably marked in conformance with Sentence (2) to indicate their existence and position. (6) Glass in a vision panel in a door or in a transparent sidelight shall conform to Sentence 3.8.3.3.(14). (7) Glass in doors and glass sidelights that could be mistaken for doors, within or at the entrances to dwelling units and in public areas, shall conform to the requirements of Article 9.6.1.4. (8) A window in a public area that extends to less than 1 000 mm above the floor and is located above the second storey in a building of residential occupancy, shall be protected by a barrier or railing from the floor to not less than 1 070 mm above the floor, or the window shall be non-openable and designed to withstand the lateral design loads for balcony guards required by Article 4.1.5.14.