Plumbing, heating, electrical, ventilating, air-conditioning,
refrigerating, cooking, fire protection and radiation production equipment
and elevators, dumbwaiters, escalators and other mechanical additions, installations
or systems for the use of the building shall be installed, located and maintained
so that under normal conditions of use such equipment and systems will not
be a danger to health or welfare, a danger because of structural defects,
or a source of ignition, or a radiation hazard, and will not create excessive
noise, or otherwise become a nuisance. Equipment and systems include, but
are not limited to, apparatus, devices, fixtures, piping, pipe hangers, pipe
covering, wiring, fittings and materials used as part of or in connection
with such installations.