ASTM D2898-07
(Practice)Standard Practice for Accelerated Weathering of Fire-Retardant-Treated Wood for Fire Testing
Standard Practice for Accelerated Weathering of Fire-Retardant-Treated Wood for Fire Testing
SIGNIFICANCE AND USE
These test methods provide a choice between two methods of exposing fire-retardant-treated wood products or assemblies to controlled accelerated weathering or conditioning.
The conditioning simulates effects of leaching, drying, temperature and, in one method, ultraviolet light.
Method A is the method normally specified for regulatory purposes when testing fire-retardant-treated wood that is intended for exterior applications.
SCOPE
1.1 This practice covers the durability of a fire-retardant treatment of wood under exposure to accelerated weathering. Two conditioning methods are described, both suitable for application to a test specimen prior to subjecting that specimen to an appropriate fire test.
1.2 This practice is applicable to wood products that have been treated with fire-retardant chemicals by pressure impregnation.
1.3 The test specimens are to be in the form of, or suitable for fabrication into, test specimens , such as those described in Test Methods E 84, E 108, and E 1354 and other standard test methods for evaluating the fire performance of fire-retardant-treated wood products.
1.4 The text of these test methods references notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of these test methods.
1.5 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are for information only.
1.6 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.
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Standards Content (Sample)
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Designation:D2898–07
Standard Practice for
Accelerated Weathering of Fire-Retardant-Treated Wood for
1
Fire Testing
This standard is issued under the fixed designation D 2898; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope E 108 Test Methods for Fire Tests of Roof Coverings
E 176 Terminology of Fire Standards
1.1 This practice covers the durability of a fire-retardant
E 1354 Test Method for Heat and Visible Smoke Release
treatment of wood under exposure to accelerated weathering.
Rates for Materials and Products Using an Oxygen Con-
Two conditioning methods are described, both suitable for
sumption Calorimeter
application to a test specimen prior to subjecting that specimen
to an appropriate fire test.
3. Terminology
1.2 This practice is applicable to wood products that have
3.1 Definitions—Definition used in this practice are in
been treated with fire-retardant chemicals by pressure impreg-
accordance with Terminology D9 and Terminology E 176,
nation.
unless otherwise indicated.
1.3 The test specimens are to be in the form of, or suitable
for fabrication into, test specimens , such as those described in
4. Significance and Use
Test Test MethodsE84, E 108, and E 1354 and other standard
4.1 These test methods provide a choice between two
test methods for evaluating the fire performance of fire-
methods of exposing fire-retardant-treated wood products or
retardant-treated wood products.
assemblies to controlled accelerated weathering or condition-
1.4 The text of these test methods references notes and
ing.
footnotes that provide explanatory material. These notes and
4.2 The conditioning simulates effects of leaching, drying,
footnotes (excluding those in tables and figures) shall not be
temperature and, in one method, ultraviolet light.
considered as requirements of these test methods.
4.3 Method A is the method normally specified for regula-
1.5 The values stated in inch-pound units are to be regarded
tory purposes when testing fire-retardant-treated wood that is
as standard.The values given in paranthese are for information
intended for exterior applications.
only.
1.6 This standard does not purport to address all of the
5. Apparatus
safety concerns, if any, associated with its use. It is the
5.1 The test apparatus shall be capable of subjecting the
responsibility of the user of this standard to establish appro-
specimen uniformly to the test conditions described in Section
priate safety and health practices and determine the applica-
7.
bility of regulatory limitations prior to use.
5.2 No special means of protecting the specimen back and
edges are required, but water shall not impinge directly on
2. Referenced Documents
2 those surfaces which are not exposed either to the weather in
2.1 ASTM Standards:
the assembled form, or to fire in the subsequent test. Water
D9 Terminology Relating to Wood and Wood-Based Prod-
spray nozzles shall be provided and arranged so as to distribute
ucts
water evenly over the exposed specimen surface.
E84 Test Method for Surface Burning Characteristics of
5.3 Heating shall be thermostatically controlled. Forced air
Building Materials
movement shall be uniform across the specimen surface, with
provisions made for adequate air changes to assure thorough
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These test methods are under the jurisdiction of ASTM Committee D07 on
drying.
Wood and are the direct responsibility of Subcommittee D07.07 on Fire Perfor-
5.4 In Method B, ultraviolet light shall be distributed as
mance of Wood.
3
evenly as possible over the specimen surface, using sunlamps
Current edition approved April 15, 2007. Published May 2007. Originally
approved in 1970. Last previous edition approved in 2004 as D 2898 – 94 (2004).
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
3
Standards volume information, refer to the standard’s Document Summary page on General Electric Type H275 RUV (275 W) or Osram Ultra-Vitalox (300 W), or
the ASTM website. equivalent, is suitable.
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D2898–07
directed normal to, and mounted 26 in. (660 mm) above the 7.2 Method B:
specimen measured from the bottom of the lamp. One lamp 7.2.1 Subject the specimen to a 24-h exposure cycle con-
2 2
shall be used for each 8 ft (0.74 m ) of specimen, or fraction sisting of 4 h wetting, 4 h drying, 4 h wetting, 4 h drying, and
thereof. 8 h rest. Repeat this cycle for a tot
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