ASTM E2768-11
(Test Method)Standard Test Method for Extended Duration Surface Burning Characteristics of Building Materials (30 min Tunnel Test)
Standard Test Method for Extended Duration Surface Burning Characteristics of Building Materials (30 min Tunnel Test)
SIGNIFICANCE AND USE
This standard is useful to establish the relative surface burning characteristics of materials or products under laboratory conditions for a 30 min test period.
The performance characteristics in the conditions of classification are intended to be used in specific applications as required by building codes or other regulatory requirements or specifications.
This test method does not provide the measurement of heat transmission through the tested surface.
This test method does not provide the classification or definition of a material or product as noncombustible, by means of the results from this standard test or flame spread index by itself.
SCOPE
1.1 The purpose of this fire-test-response standard is to evaluate the ability of a product to limit the surface spread of flame when evaluated for 30 min. This fire-test-response standard uses the apparatus and procedure of Test Method E84 with the total test period extended to 30 min.
1.2 Building applications affecting fire and life safety often require products with specific criteria for surface spread of flame and flame spread index. The resulting performance characteristics included in the conditions of classification for this fire-test-response standard are intended to be used for regulatory purposes to determine the suitability of materials or products for use in buildings under specified conditions where significantly reduced surface burning characteristics are required.
1.3 Materials and products that are beyond the scope of Test Method E84 are beyond the scope of this standard.
1.4 Materials or products which melt, drip or delaminate to the extent that the continuity of the flame front is destroyed are beyond the scope of this standard.
Note 1—Testing of materials that melt, drip, or delaminate to such a degree that the continuity of the flame-front is destroyed, results in low flame spread indices that do not relate directly to indices obtained by testing materials that remain in place. Materials or products that melt, drip, or delaminate, or that cannot support their own weight, have the potential for demonstrating reduced flame spread results as compared to the flame spread results where the materials or products remain in place during testing.
1.5 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.6 The text of this standard references notes and footnotes that provide explanatory information. These notes and footnotes, excluding tables and figures, shall not be considered as requirements of the standard.
1.7 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
1.8 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
1.9 Fire testing is inherently hazardous. Adequate safeguards for personnel and property shall be employed in conducting these tests.
General Information
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation: E2768 − 11 An American National Standard
Standard Test Method for
Extended Duration Surface Burning Characteristics of
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Building Materials (30 min Tunnel Test)
This standard is issued under the fixed designation E2768; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 1.7 This standard is used to measure and describe the
response of materials, products, or assemblies to heat and
1.1 The purpose of this fire-test-response standard is to
flame under controlled conditions, but does not by itself
evaluate the ability of a product to limit the surface spread of
incorporate all factors required for fire hazard or fire risk
flame when evaluated for 30 min. This fire-test-response
assessment of the materials, products, or assemblies under
standard uses the apparatus and procedure of Test Method E84
actual fire conditions
with the total test period extended to 30 min.
1.8 This standard does not purport to address all of the
1.2 Building applications affecting fire and life safety often
safety concerns, if any, associated with its use. It is the
require products with specific criteria for surface spread of
responsibility of the user of this standard to establish appro-
flame and flame spread index. The resulting performance
priate safety and health practices and determine the applica-
characteristics included in the conditions of classification for
bility of regulatory limitations prior to use.
this fire-test-response standard are intended to be used for
1.9 Fire testing is inherently hazardous. Adequate safe-
regulatory purposes to determine the suitability of materials or
guards for personnel and property shall be employed in
products for use in buildings under specified conditions where
conducting these tests.
significantly reduced surface burning characteristics are re-
quired.
2. Referenced Documents
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1.3 Materials and products that are beyond the scope ofTest
2.1 ASTM Standards:
Method E84 are beyond the scope of this standard.
E84 Test Method for Surface Burning Characteristics of
Building Materials
1.4 Materials or products which melt, drip or delaminate to
E176 Terminology of Fire Standards
the extent that the continuity of the flame front is destroyed are
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beyond the scope of this standard. 2.2 ICC Codes
NOTE 1—Testing of materials that melt, drip, or delaminate to such a
IBC International Building Code
degree that the continuity of the flame-front is destroyed, results in low
IWUIC International Wildland Urban Interface Code
flame spread indices that do not relate directly to indices obtained by
IRC International Residential Code
testingmaterialsthatremaininplace.Materialsorproductsthatmelt,drip,
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2.3 NFPA Code
or delaminate, or that cannot support their own weight, have the potential
for demonstrating reduced flame spread results as compared to the flame NFPA 101 Life Safety Code
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spread results where the materials or products remain in place during
2.4 California Building Code
testing.
CBC California Building Code
1.5 The values stated in inch-pound units are to be regarded
3. Terminology
as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only
3.1 Definitions—For definitions of terms used in this test
and are not considered standard.
method, refer to Terminology E176 and Test Method E84. The
terms surface flame spread, flame spread index, and smoke
1.6 The text of this standard references notes and footnotes
that provide explanatory information. These notes and
footnotes, excluding tables and figures, shall not be considered
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
as requirements of the standard. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
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ICC codes are available from International Code Council, 4051 W. Flossmoor
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This test method is under the jurisdiction of ASTM Committee E05 on Fire Rd., Country Club Hills, IL 60478.
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Standards and is the direct responsibility of Subcommittee E05.22 on Surface NFPA Codes are available from National Fire Protection Association, 1
Burning. Batterymarch Park, Quincy, MA, 02269.
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Current edition approved July 1, 2011. Published August 2011. DOI: 10.1520/ CBC codes are available from http://publiccodes.citation.com/st/ca/st/CA-P-
E2768-11. 2007–999999.htm.
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