REVIEWED RESUB1 BLD2024-0779+FLAMMABILITY REPORTnrwr:..
COMMERCIAL TESTING COMPANY
1215 South Hamilton Street • Dalton, Georgia 30720
Telephone (706) 278-3935 • Facsimile (706) 278-3936
RESUB
Jul 01 2024
CITY OF EDMONDS
DEVELOPMENT SERVICES
DEPARTMENT BLD2024-0779
REVIEWED
BY
CITY OF EDMONDS
Standard Method of Test for
Surface Burning Characteristics of Building Materials
ASTM E84-17
F—Sorb
Report Number 18-01353
Test Number 5168-6669-0118R
January 24, 2018
Nut Shell, LLC
Redmond, Washington
Commercial Testing Company
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(Authorized Signature)
This report is provided for the exclusive use of the client to whom it is addressed. It may be used in its entirety to gain product
acceptance from duly constituted authorities. The test results presented in this report apply only to the samples tested and are
not necessarily indicative of apparent identical or similar materials. Sample selection and identification were provided by the
client. A sampling plan, if described in the referenced test procedure, was not necessarily followed. This report, or the name of
Commercial Testing Company, shall not be used under any circumstance in advertising to the general public.
TESTED TO BE SURE®
Since 1974
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INTRODUCTION
This report is a presentation of results of a surface flammability test on a material submitted by Nut Shell,
LLC, Redmond, Washington.
The test was conducted in accordance with the ASTM International fire -test -response standard E84-17,
Surface Burning Characteristics of Building Materials, sometimes referred to as the Steiner tunnel test. ASTM
E84 is an American National Standard (ANSI) and has been approved for use by agencies of the
Department of Defense. The ASTM E84 test method is the technical equivalent of UL No. 723. The test is
applicable to exposed interior surfaces such as walls and ceilings. The test is conducted with the specimen
in the ceiling position with the surface to be evaluated face down toward the ignition source. Thus,
specimens shall either be self-supporting by its own structural quality, held in place by added supports
along the test surface, or secured from the back side.
This standard is used to measure and describe the response of materials, products, or assemblies to heat
and flame under controlled conditions, but does not by itself incorporate all factors required for fire -
hazard or fire -risk assessment of the materials, products, or assemblies under actual fire conditions.
PURPOSE
The purpose of the test is to provide only the comparative measurements of surface flame spread and
smoke development of materials with that of select grade red oak and fiber —reinforced cement board,
Grade II, under specific fire exposure conditions. The test exposes a nominal 24-foot long by 20-inch wide
test specimen to a controlled air flow and flaming fire adjusted to spread the flame along the entire length
of a red oak specimen in 51h minutes. During the 10-minute test duration, flamespread over the specimen
surface and density of the resulting smoke are measured and recorded. Test results are calculated relative
to red oak, which has an arbitrary rating of 100, and fiber —reinforced cement board, Grade II, which has a
rating of 0.
The test results are expressed as Flame Spread Index and Smoke Developed Index. The Flame Spread
Index is defined in ASTM E176 as "a number or classification indicating a comparative measure derived
from observations made during the progress of the boundary of a zone of flame under defined test
conditions." The Smoke Developed Index, a term specific to ASTM E84, is defined as "a number or
classification indicating a comparative measure derived from smoke obscuration data collected during
the test for surface burning characteristics." There is not necessarily a relationship between the two
measurements.
The method does not provide for measurement of heat transmission through the surface tested, the effect
of aggravated flame spread behavior of an assembly resulting from the proximity of combustible walls
and ceilings, or classifying a material as noncombustible solely by means of a Flame Spread Index.
The zero reference and other parameters critical to furnace operation are verified on the day of the test by
conducting a 10—minute test using 1/4—inch fiber —reinforced cement board, Grade II. Periodic tests using
NOFMA certified 23/32—inch select grade red oak flooring provide data for the 100 reference.
TEST SAMPLE
The test sample, selected by the client, was identified as F—Sorb 1" Thick Acoustic Panel, a polyester
acoustic panel with a weight of 7.5 pcf and a thickness of 1 inch. Six test panels, each measuring 24 inches
wide by 48 inches in length, were received. They were physically self-supporting and required no
additional sample preparation. The panels were transferred to storage racks and conditioned to
equilibrium in an atmosphere with the temperature maintained at 71 ± 2°F and the relative humidity at 50
± 5 percent. For testing, the panels were placed end -to -end on the ledges of the tunnel furnace to make up
the necessary 24-foot test sample and the test conducted with no auxiliary support mechanism.
TEST RESULTS
The test results, calculated on the basis of observed flame propagation and the integrated area under the
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recorded smoke density curve, are presented below. The Flame Spread Index obtained in E84 is rounded
to the nearest number divisible by five. Smoke Developed Indices are rounded to the nearest number
divisible by five unless the Index is greater than 200. In that case, the Smoke Developed Index is rounded
to the nearest 50 points. The flame spread and smoke development data are presented graphically at the
end of this report.
Test Specimen
Flame Spread Index
Smoke Developed Index
Fiber -Reinforced Cement Board, Grade II
Red Oak Flooring
0
100
0
100
F—Sorb 1" Acoustic Panel
10
185
OBSERVATIONS
Specimen ignition over the burners occurred at 0.08 minute. Surface flame spread was observed to a
maximum distance of 10.15 feet beyond the zero point at 9.98 minutes. The maximum temperature
recorded during the test was 652°F. For information purposes, the actual (unrounded) Flame Spread and
Smoke Developed Indices were 11.2 and 186.8 respectively.
CLASSIFICATION
The Flame Spread Index and Smoke Developed Index values obtained by ASTM E84 tests are frequently
used by code officials and regulatory agencies in the acceptance of interior finish materials for various
applications. The most widely accepted classification system is described in the National Fire Protection
Association publication NFPA 101 Life Safety Code, where:
Class A 0 — 25 Flame Spread Index 0 — 450 Smoke Developed Index
Class B 26 — 75 Flame Spread Index 0 — 450 Smoke Developed Index
Class C 76 — 200 Flame Spread Index 0 — 450 Smoke Developed Index
Class A, B, and C correspond to Type I, II, and III respectively in other codes. They do not preclude a
material being otherwise classified by the authority of jurisdiction.
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RESUB
Jul 01 2024
CITY OF EDMONDS
DEVELOPMENT SERVICES
DEPARTMENT
ASTM E 84 TEST DATA
Client: Nut Shell, LLC
Test Number: 5168-6669-0118R
Material Tested: F—Sorb 1"Acoustic Panel
Date: January 24, 2018
Test Results:
Time to Ignition = 00.08 minutes
Maximum Flamespread Distance = 10.15 feet
Time to Maximum Spread = 09.98 minutes
20
18
16
14
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100
90
80
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60
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30
20
10
0
Flame Spread Index = 10
Smoke Developed Index = 185
Time, minutes
Time, minutes
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