A.
Scope. The provisions of this code shall govern the
minimum standards for basic equipment and facilities used for light
and ventilation of a structure.
B.
Alternative methods and devices. In place of the means
for natural light and ventilation prescribed in this code, alternative
arrangement of windows, louvers, or other devices or methods that
will provide the equivalent minimum performance requirements shall
be permitted in order to comply with the 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.
Common halls and stairways. Each common hall and stairway
in a structure, other than one- and two-family structures, 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. Each 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 good operating condition 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 habitable area.
