§ 95.11 LIGHT, VENTILATION, AND HEATING REQUIREMENTS.
   No person shall occupy as owner-occupant or let to another for occupancy any dwelling or dwelling unit, for the purpose of living therein, which does not comply with the following requirements.
   (A)   Every habitable room shall have at least one window or sky light facing directly to the outdoors. The minimum total window area for every habitable room shall be at least 10% of the floor area of the room. Whenever walls or other portions of structures are located less than three feet from the window and extend to a level above that of the ceiling of the room, the window shall not be deemed to face directly to the outdoors and shall not be included as contributing to the minimum total window area. Whenever the only window is the sky light type window in the top of the room, the total window area of the sky light shall equal at least 12-1/2% of the total floor area of the room.
   (B)   Every habitable room shall have at least one window or sky light which can be easily opened or some other device that will adequately ventilate the room. The total openable window area in each habitable room shall be equal to at least 45% of the minimum window area size or minimum sky light type window size, as required in division (A) above, except where there is supplied some other device affording adequate ventilation which is approved by the Commissioner of Buildings.
   (C)   Every bathroom and water closet compartment shall comply with the light and ventilation requirements for applicable rooms contained in division (B) above, except that no window or sky light shall be required where there is supplied some other device affording adequate ventilation which is approved by the Commissioner of Buildings.
   (D)   Every dwelling shall have heating facilities which are properly installed, are maintained in safe and good working condition, and are capable of safely and adequately heating all habitable rooms, bathrooms, and water closet compartments in every dwelling unit located therein to a temperature of at least 70°F., at a distance three feet above floor level, under ordinary minimum winter conditions.
   (E)   Every public hall and stairway in every multiple dwelling containing five or more dwelling units shall be adequately lighted at all times. Every public hall and stairway in structures devoted solely to dwelling occupancy and containing not more than four dwelling units may be supplied with conveniently located light switches, controlling an adequate lighting system which may be turned on when needed, instead of fu11-time lighting.
(‘67 Code, § 137.05) (Ord. 4-1967, passed 6-12-67) Penalty, see § 95.99