| SECTION 2606 LIGHT-TRANSMITTING
PLASTICS
2606.4 Specifications.
Light-transmitting plastics, including thermoplastic, thermosetting
or reinforced thermosetting plastic material, shall have a
self-ignition temperature of 650°F (343°C) or greater where
tested in accordance with ASTM D 1929; a smoke-developed index
not greater than 450 where tested in the manner intended for
use in accordance with ASTME84, or not greater than 75 where
tested in the thickness intended for use in accordance with
ASTM D 2843 and shall conform to one of the following combustibility
classifications:
Class CC1: Plastic materials
that have a burning extent of 1 inch (25 mm) or less where
tested at a nominal thickness of 0.060 inch (1.5 mm), or in
the thickness intended for use, in accordance with ASTM D
635,
Class CC2: Plastic materials
that have a burning rate of 2.5 inches per minute (1.06 mm/s)
or less where tested at a nominal thickness of 0.060 inch
(1.5 mm), or in the thickness intended for use, in accordance
with ASTM D 635.
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