Specifications

Project No. 100290066SAT-002A December 30, 2010
Wenzhou Atlantic Import & Export Co., Ltd.
Page 4 of 9
II. PURPOSE
The ASTM E84 (25 foot tunnel) test method is intended to compare the surface flame
spread and smoke developed measurements to those obtained from tests of mineral
fiber cement board and select grade red oak flooring. The test specimen surface (18
inches wide and 24 feet long) is exposed to a flaming fire exposure during the 10
minute test duration, while flame spread over its surface and density of the resulting
smoke are measured and recorded. Test results are presented as the computed
comparisons to the standard calibration materials.
The furnace is considered under calibration when a 10 minute test of red oak decking
will pass flame out the end of the tunnel in five minutes, 30 seconds, plus or minus 15
seconds. Mineral fiber cement board forms the zero point for both flame spread and
smoke developed indexes, while the red oak flooring smoke developed index is set as
100.
III. TEST PROCEDURE
The tests were conducted in accordance with the procedures outlined in the ASTM
E84. The specimens are placed directly on the tunnel ledges. As required by the
standard, one or more layers of 0.25 inch thick reinforced concrete board are placed
on top of the test sample between the sample and the tunnel lid. After the test, the
samples are removed from the tunnel, examined and disposed of.