In place of the means for natural light and ventilation prescribed in
this Article, alternative arrangements of windows, louvers, or other devices
or methods that will provide the equivalent minimum performance requirements
shall be permitted in order to comply with any applicable local building code.
A.
General. All areas in a structure shall be provided sufficient
light so as not to endanger health and safety. All areas in a structure shall
be provided with natural light or equipment to accommodate artificial light
of sufficient intensity and distributed so as to permit the maintenance of
sanitary conditions and the safe use of the area and the appliances, equipment
and fixtures.
B.
Lighting fixtures. Each common hall, interior stairway,
water closet compartment, bathroom, laundry room and furnace room shall contain
at least one electrical lighting fixture. In structures containing more than
one housing unit, each common hall and stairway shall be adequately lighted
at all times with an illumination equivalent to the footcandles provided by
at least a sixty-watt standard incandescent light bulb for each 200 square
feet of floor area, provided that the spacing between lights may not be greater
than 30 feet. Every exterior stairway shall be illuminated.
A.
General. All areas in a structure shall be provided sufficient
ventilation so as not to endanger health and safety.
B.
Mechanical ventilation.
(1)
When mechanical ventilation is provided instead of natural
ventilation, the mechanical ventilating system shall be maintained in operation
during the occupancy of the structure or portion of it.
(2)
When part of the air provided by a mechanical ventilation
system is recirculated, the portion or volume of air recirculated may not
be recirculated to a different housing unit.
