3.4.1
Electrical Resistance
Between 30 and 45 days after flooring installation is completed, and prior
to its use, the flooring shall be tested in accordance with paragraph
12-4.1.3.8(b)(7) of NFPA 99. The resistance of the floor at any one
location shall be more than 5,000 ohms in areas with 110 volts service,
more than 10,000 ohms in areas with 220 volt service, and average less than
1,000,000 ohms and more than 25,000 ohms in all areas. Tests shall be made
by a technician experienced in such work.
3.4.2
Spark Resistance
The floor shall be tested for spark resistance by stroking the floor
vigorously with a 300 mm 12 inch hardened steel file in a 914.4 mm 3 foot
arc. The test shall be performed for each 7.43 square meters 80 square feet
of floor area. Tests shall be made in a darkened space and only when the
relative humidity of the atmosphere within the space does not exceed 50
percent. The floor shall not produce a spark when tested under these
conditions.
3.5
PROTECTION
Surfacing shall set for a minimum period of 48 hours before traffic is
allowed on the floor. Finished flooring shall be protected from traffic by
covering with 13.5 kg 30 pound building paper or other equally effective
means until final acceptance of the project.
-- End of Section --
SECTION 09670
Page 18
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