ASTM D2898-08e1
(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
This practice describes different 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 two methods, ultraviolet (UV) 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. Four conditioning methods are described. Methods are 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 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 mathematical conversions to SI units that are provided for information only and are not considered standard.
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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Designation:D2898–08
Standard Practice for
Accelerated Weathering of Fire-Retardant-Treated Wood for
1
Fire Testing
This standard is issued under the fixed designation D2898; 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
´ NOTE—Mathematical conversion errors were editorially corrected throughout in March 2009.
1. Scope E84 Test Method for Surface Burning Characteristics of
Building Materials
1.1 This practice covers the durability of a fire-retardant
E108 Test Methods for Fire Tests of Roof Coverings
treatment of wood under exposure to accelerated weathering.
E176 Terminology of Fire Standards
Four conditioning methods are described. Methods are suitable
E1354 Test Method for Heat and Visible Smoke Release
for application to a test specimen prior to subjecting that
Rates for Materials and Products Using an Oxygen Con-
specimen to an appropriate fire test.
sumption Calorimeter
1.2 This practice is applicable to wood products that have
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2.2 ICC Evaluation Service Acceptance Criteria:
been treated with fire-retardant chemicals by pressure impreg-
AC 107 Classified Wood Roof Systems
nation.
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2.3 UL Standards:
1.3 The test specimens are to be in the form of, or suitable
UL 790 TestsforFireResistanceofRoofCoveringMaterial
for fabrication into, test specimens, such as those described in
Test Methods E84, E108, and E1354 and other standard test
3. Terminology
methods for evaluating the fire performance of fire-retardant-
3.1 Definitions—Definition used in this practice are in
treated wood products.
accordance withTerminologies D9 and E176, unless otherwise
1.4 Thetextofthesemethodsreferencesnotesandfootnotes
indicated.
that provide explanatory material. These notes and footnotes
(excluding those in tables and figures) shall not be considered
4. Significance and Use
as requirements of these test methods.
4.1 This practice describes different methods of exposing
1.5 The values stated in inch-pound units are to be regarded
fire-retardant-treated wood products or assemblies to con-
as standard. The values given in parentheses are mathematical
trolled accelerated weathering or conditioning.
conversions to SI units that are provided for information only
4.2 The conditioning simulates effects of leaching, drying,
and are not considered standard.
temperature, and, in two methods, ultraviolet (UV) light.
1.6 This standard does not purport to address all of the
4.3 Method A is the method normally specified for regula-
safety concerns, if any, associated with its use. It is the
tory purposes when testing fire-retardant-treated wood that is
responsibility of the user of this standard to establish appro-
intended for exterior applications.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
5. Apparatus
5.1 The test apparatus shall be capable of subjecting the
2. Referenced Documents
specimen uniformly to the test conditions described in Section
2
2.1 ASTM Standards:
7.
D9 Terminology Relating to Wood and Wood-Based Prod-
5.2 No special means of protecting the specimen back and
ucts
edges are required, but water shall not impinge directly on
those surfaces which are not exposed either to the weather in
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These test methods are under the jurisdiction of ASTM Committee D07 on
the assembled form, or to fire in the subsequent test. Water
Wood and are the direct responsibility of Subcommittee D07.07 on Fire Perfor-
spray nozzles shall be provided and arranged so as to distribute
mance of Wood.
water evenly over the exposed specimen surface.
Current edition approved Nov. 1, 2008. Published December 2008. Originally
approved in 1970. Last previous edition approved in 2007 as D2898 – 07. DOI:
10.1520/D2898-08E01.
2 3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Available from ICC Evaluation Service, Inc., 5360 Workman Mill Road,
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Whittier, CA 90601, http://icc-es.org.
4
Standards volume information, refer to the standard’s Document Summary page on Available from Underwriters Laboratories, Inc., 333 Pfingsten Road, North-
the ASTM website. brook, IL 60062, http://www.ul.com.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D2898–08
5.3 Accompany drying cycles with heating that is thermo- 7.1.2 Subject the specimens to an exposure cycle consisting
statically controlled. The controlling temperature shall be the of twelve one-week cycles. Each cycle is
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
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Designation:D2898–07 Designation: D 2898 – 08
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 (´) indicates an editorial change since the last revision or reapproval.
1
´ NOTE—Mathematical conversion errors were editorially corrected throughout in March 2009.
1. Scope
1.1 This practice covers the durability of a fire-retardant treatment of wood under exposure to accelerated weathering.TwoFour
conditioning methods are described, bothdescribed. Methods are 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
Test Methods E 84, E 108, and E 1354and 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 paraentheses are mathematical
conversions to SI units that are provided for information only and are not considered standard.
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.
2. Referenced Documents
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2.1 ASTM Standards:
D9 Terminology Relating to Wood and Wood-Based Products
E84 Test Method for Surface Burning Characteristics of Building Materials
E 108 Test Methods for Fire Tests of Roof Coverings
E 176 Terminology of Fire Standards
E 1354 Test Method for Heat and Visible Smoke Release Rates for Materials and Products Using an Oxygen Consumption
Calorimeter
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2.2 ICC Evaluation Service Acceptance Criteria:
AC 107 Classified Wood Roof Systems
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2.3 UL Standards:
UL 790 Tests for Fire Resistance of Roof Covering Material
3. Terminology
3.1 Definitions— Definition used in this practice are in accordance with Terminologyies D 9 and Terminology E 176, unless
otherwise indicated.
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ThesetestmethodsareunderthejurisdictionofASTMCommitteeD07onWoodandarethedirectresponsibilityofSubcommitteeD07.07onFirePerformanceofWood.
Current edition approved April 15, 2007. Published May 2007. Originally approved in 1970. Last previous edition approved in 2004 as D2898–94(2004).
Current edition approved Nov. 1, 2008. Published December 2008. Originally approved in 1970. Last previous edition approved in 2007 as D 2898 – 07.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM 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.
3
General Electric Type H275 RUV (275 W) or Osram Ultra-Vitalox (300 W), or equivalent, is suitable.
3
Available from ICC Evaluation Service, Inc., 5360 Workman Mill Road, Whittier, CA 90601, http://icc-es.org.
4
“Correlation of ASTM Exposure Tests for Evaluating Durability of Fire-Retardant Treatment of Wood,” by C.A. Holmes, Forest Products Laboratory, Research Paper
FPL 194, U.S.D.A. Forest Service, 1973.
4
Available from Underwriters Laboratories, Inc., 333 Pfingsten Road, Northbrook, IL 60062, http://www.ul.com.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
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D2898–08
4. Significance and Use
4.1These test methods provide a choice between two 4.1 This practice describes different methods of exposing fire-retardant-
treated wood products or assemblies to controlled accelerated weathering or conditioning.
4.2 Theconditioningsimulateseffectsofleaching,drying,temperature,and,inonemethod,twomethods,ultraviolet(UV)light.
4.3 MethodAis the method normally specified for regulatory purposes w
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