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(SECTION 402 LIGHT) 402.2 Common halls and stairways: Every common hall and stairway in residential occupancies other than in one-and two-family dwellings, shall be lighted at all times with at least a 60- watt standard incandescent light bulb for each 200 square feet (19 m2) of floor area or equivalent illumination, provided that the spacing between lights shall not be greater than 30 feet (9144 mm). Every exterior stairway shall be illuminated at all times the building space served by the means of egress is occupied, with a minimum of 1 footcand1e (11 lux) at floors, landings and treads. (SECTION 404 OCCUPANCY LIMITATIONS) 404.2 Minimum room widths: Habitable spaces shall have a clear room width at the narrowest point, exclusive of projections affecting less than 10 percent of the floor area, which is not less than the following: Living Rooms 10' - 0" (3048 mm) Dining Rooms 7' - 8" (2338 mm) Other habitable rooms 7' - 0" (2134 rom) Exception: Kitchens shall have a clear passageway of not less than 3 feet (914 rom) between counter fronts and appliances or counter fronts and walls) 404.4 Bedroom requirements: Every bedroom shall comply with the requirements of Sections 404.4.1 through 404.4.2. 404.4.1 Areas for sleeping purposes: Every bedroom occupied by one occupant shall contain at least 70 square feet (6.5 m2) of floor area, every bedroom occupied by two persons shall contain at least 100 square feet (4.6 m2 ) of floor area, and every bedroom occupied by three persons shall contain at least 150 square feet (13.95 m2) of floor area. 404.4.3 Water closet accessibility: Every bedroom shall have access to at least one water closet and one lavatory without passing through another bedroom. Every bedroom in a dwelling unit shall have access to at least one water closet and lavatory located in the same story as a bedroom, unless it is the only bedroom in the story. 404.4.4 Closets: Every bedroom shall have access to a closet opening into the room, with a minimum floor area of six square feet (.56 m2). Closet areas shall not be counted as part of the floor areas of rooms. 404.4.5 Prohibited occupancy: Kitchens and nonhabitable spaces shall not be used for sleeping purposes. 404.4.6 Other requirements: Bedrooms shall comply with the applicable provisions of this code including, but not limited to, the light, ventilation, room area, ceiling height and 22