NOTE: Choice of critical radiant flux level as it
applies to building type and area of application
will be made in accordance with the latest edition
of MIL-HDBK 1008B or NFPA 101. Wherever the use of
Class II (0.22) watts finish is required, Class I
(0.45) watts will be permitted.
Critical radiant flux will be a minimum average of
0.45 watts when used in corridors in bachelor
enlisted quarters, bachelor officer quarters,
hospital, child care centers, temporary lodging
facilities, and new construction detention and
correctional facilities. Generally the critical
radiant flux will be a minimum of 0.22 for corridors
of other type facilities. Where an approved
automatic sprinkler system is installed, Class II
interior floor finish may be used where Class I
floor finish is required, and where Class II is
required, no critical radiant flux rating is
required. Omit paragraph if not applicable.
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c. Flammability and Critical Radiant Flux Requirements: Carpet
shall comply with 16 CFR 1630. Carpet in corridors and exits
shall have a minimum average critical radiant flux of [0.22]
[0.45] watts per square centimeter when tested in accordance with
ASTM E 648.
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NOTE: For most facilities, the 45 N (10 pound) tuft
bind for loop pile and 13 N (3 pound) for cut pile
are adequate. For child care centers, youth
centers, and dependents' schools, specify 53 N (12
pound) tuft bind for loop pile because of the
increased potential for loop pull in the course of
children's activities. Although increased wear by
itself is not the primary factor in damage due to
lack of tuft bind, consider 53 N (12 pound) tuft
bind for any severe wear application where loop pile
might be vulnerable to snagging.
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d. Tuft Bind: Tuft bind force required to pull a tuft or loop
free from carpet backing shall be a minimum [40 N 10 pound average
force for loop pile] [18 N 3 pound average force for cut pile].
e. Colorfastness to Crocking: Dry and wet crocking shall comply
with AATCC 165 and shall have a Class 4 minimum rating on the
AATCC Color Transference Chart for all colors.
f. Colorfastness to Light: Colorfastness to light shall comply
with AATCC 16, Test Option E "Water-Cooled Xenon-Arc Lamp,
Continuous Light" and shall have a minimum 4 grey scale rating
after 40 hours.
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NOTE: Include the following test when specifying
carpet constructed of yarn dyed fibers.
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SECTION 09680
Page 16
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