with a flexible hanger device at the attachment to the
(g) Tests. In lieu of the requirements for
fixture channel to preclude breaking of the support.
equipment supports given in Paragraph 10-3c,
The motion of swivels or hinged joints will not cause
lighting fixtures and the complete fixture-supporting
sharp binds in conductors or damage to insulation.
assembly may be accepted of they pass shaking-table
tests approved by the using agency. Such tests will
(c) Each recessed individual or continuous
be conducted by an approved and independent
row of fluorescent fixtures will be supported by a
testing laboratory, and the results of such tests will
seismic-resisting suspended ceiling support system,
specifically state whether or not the lighting fixture
and will be fastened thereto at each corner of the
supports satisfy the requirements of the approved
fixture; or will be provided with fixture support
tests.
Suspension systems for light fixtures, as
installed, that are free to swing a minimum of 45
wires attached to the building structural members
using two wires for individual fixtures, and one wire
from the vertical in all directions, and will
per unit of continuous row fixtures. These support
withstand, without failure, a force of not less than
wires (minimum 12-gauge wire) will be capable of
four times the weight they are intended to support,
supporting four times the support load.
will be acceptable.
(d) A supporting assembly that is intended
e.
Piping in Buildings. Pipes are categorized
to be mounted on an outlet box will be designed to
as pipes related to the fire protection system, critical
accommodate mounting features on 4-inch (102mm)
piping in essential and hazardous facilities, and all
boxes, 3-inch (76mm) plaster rings, and fixture
other piping.
studs.
(1) Fire protection piping. All water pipes
(e)
Each surface-mounted individual or
for fire protection systems will be designed under the
continuous row of fluorescent fixtures will be
provisions of the current issue of the "Standard for
attached to a seismic-resisting ceiling support
the Installation of Sprinkler Systems" of the National
system.
Support devices for attaching fixtures to
Fire Protection Association (NFPA No. 13).
To
suspended ceilings will be a locking-type scissor
avoid conflict with the NFPA recommendations, the
clamp or a full loop band that will securely attach to
criteria in the following paragraphs are not
the ceiling support.
Fixtures attached to the
applicable to piping expressly designed for fire
underside of a structural slab will be properly
protection.
anchored to the slab at each corner of the fixture.
(2) Critical piping in essential and hazardous
(f)
Each wall-mounted emergency light
facilities. Critical piping is that which is required
unit will be secured in a manner that will hold the
for life-safety systems, for continued operations after
unit in place during a seismic disturbance.
an earthquake, or for safety of the general public.
All critical piping in essential and hazardous
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