434. Windows and transparent or translucent doors, gates and walls in workplaces.

Every window or other transparent or translucent surface in a wall or partition and every transparent or translucent surface in a door or gate must, where necessary for reasons of health or safety: (1) be of safety material or be protected against breakage of the transparent or translucent material; and (2) be appropriately marked or incorporate features so as, in either case, to make it apparent