ASTM D5516-09

Standard Test Method for Evaluating the Flexural Properties of Fire-Retardant Treated Softwood Plywood Exposed to Elevated Temperatures

SIGNIFICANCE AND USE
The flexural properties evaluated by this test method are intended to provide any one or all of the following:
Data on the comparative effects of fire-retardant chemical formulations and environmental conditions on the flexural properties of plywood.
Data for use in developing modification factors for the allowable design properties of treated plywood when exposed to elevated temperatures and humidities.
Data comparing variables, such as other plywood species and dimensions.
Results obtained from tests conducted and analyzed in accordance with the procedures of this test method may be used with other information to establish recommended roof sheathing spans for fire-retardant treated plywood.
Note 1—Temperatures lower than the test temperature specified in this test method and the cumulative effects of the elevated temperatures and humidity exposures expected to be encountered in service should be taken into account when recommended roof sheathing spans are established.
SCOPE
1.1 This test method is designed to determine the effect of exposure to high temperatures and humidities on the flexure properties of fire-retardant treated softwood plywood. In this test method, plywood is exposed to a temperature of 77°C (170°F).  
1.2 The purpose of the test method is to compare the flexural properties of fire-retardant treated plywood relative to untreated plywood. The results of tests conducted in accordance with this test method provide a reference point for estimating strength temperature relationships. This test method is intended to provide an accelerated test at elevated temperatures and controlled humidities of plywood sheathing treated with the same chemical formulation(s) and processing conditions as plywood used commercially.
1.3 The values stated in SI units are to be regarded as standard. The values given in parentheses are mathematical conversions to inch-pound units that are provided for information only and are not considered standard.
1.4 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.

General Information

• Status: Historical
• Publication Date: 14-May-2009
• ICS: 79.060.20 - Fibre and particle boards
• Technical Committee: D07 - Wood
• Drafting Committee: D07.07 - Fire Performance of Wood

Relations

• Replaces: ASTM D5516-03 - Standard Test Method for Evaluating the Flexural Properties of Fire-Retardant Treated Softwood Plywood Exposed to Elevated Temperatures
• Effective Date: 15-May-2009
• Replaced By: ASTM D5516-17 - Standard Test Method for Evaluating the Flexural Properties of Fire-Retardant Treated Softwood Plywood Exposed to Elevated Temperatures
• Effective Date: 15-Apr-2017
• Referred By: ASTM D6305-21 - Standard Practice for Calculating Bending Strength Design Adjustment Factors for Fire-Retardant-Treated Plywood Roof Sheathing
• Effective Date: 15-May-2009
• Referred By: ASTM D5664-17 - Standard Test Method for Evaluating the Effects of Fire-Retardant Treatments and Elevated Temperatures on Strength Properties of Fire-Retardant Treated Lumber
• Effective Date: 15-May-2009
• Referred By: ASTM D7857-16 - Standard Test Method for Evaluating the Flexural Properties and Internal Bond Strength of Fire-Retarded Mat-Formed Wood Structural Composite Panels Exposed to Elevated Temperatures
• Effective Date: 15-May-2009

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D5516 − 09
Standard Test Method for
Evaluating the Flexural Properties of Fire-Retardant Treated
1
Softwood Plywood Exposed to Elevated Temperatures
This standard is issued under the fixed designation D5516; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope D1165Nomenclature of Commercial Hardwoods and Soft-
woods
1.1 This test method is designed to determine the effect of
D2915Practice for Sampling and Data-Analysis for Struc-
exposure to high temperatures and humidities on the flexure
tural Wood and Wood-Based Products
properties of fire-retardant treated softwood plywood. In this
D3043Test Methods for Structural Panels in Flexure
test method, plywood is exposed to a temperature of 77°C
D6305Practice for Calculating Bending Strength Design
(170°F).
Adjustment Factors for Fire-Retardant-Treated Plywood
1.2 The purpose of the test method is to compare the
Roof Sheathing
flexural properties of fire-retardant treated plywood relative to
E84Test Method for Surface Burning Characteristics of
untreated plywood. The results of tests conducted in accor-
Building Materials
dance with this test method provide a reference point for
E176Terminology of Fire Standards
estimatingstrengthtemperaturerelationships.Thistestmethod
2.2 Other Standards:
is intended to provide an accelerated test at elevated tempera-
AWPAC-27Plywood-Fire Retardant Treatment by Pressure
3
tures and controlled humidities of plywood sheathing treated
Processes
with the same chemical formulation(s) and processing condi-
NFPA703Standard for Fire Retardant Impregnated Wood
4
tions as plywood used commercially.
and Fire Retardant Coatings for Building Materials
5
1.3 The values stated in SI units are to be regarded as PS1U.S. Product Standard for Structural Plywood
PS2U.S. Product Standard for Wood-Based Structural Use
standard. The values given in parentheses are mathematical
5
conversions to inch-pound units that are provided for informa- Panels
tion only and are not considered standard.
3. Terminology
1.4 This standard does not purport to address all of the
3.1 Definitions—Definitions used in this test method are in
safety concerns, if any, associated with its use. It is the
accordance with Terminologies D9 and E176 and Nomencla-
responsibility of the user of this standard to establish appro-
ture D1165.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. 3.2 Definitions of Terms Specific to This Standard:
3.2.1 depth of beam—that dimension of the beam which is
2. Referenced Documents
perpendicular to the span and parallel to the direction in which
2
the load is applied.
2.1 ASTM Standards:
D9Terminology Relating to Wood and Wood-Based Prod-
3.2.2 span—the total distance between the centerline of
ucts
supports providing the reactions on which a beam is supported
to accommodate a transverse load.
1
3.2.3 span-depth ratio—the numerical ratio of span divided
This test method is under the jurisdiction ofASTM Committee D07 on Wood
and is the direct responsibility of Subcommittee D07.07 on Fire Performance of
by beam depth.
Wood.
Current edition approved May 15, 2009. Published June 2009. Originally
3
approved in 1991 as ES20–91. Last previous edition approved in 2003 as Available from American Wood Protection Association (AWPA), P.O. Box
D5516–03. DOI: 10.1520/D5516-09. 361784, Birmingham, AL 35236-1784, http://www.awpa.com.
2 4
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Available from National Fire Protection Association (NFPA), 1 Batterymarch
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Park, Quincy, MA 02169-7471, http://www.nfpa.org.
5
Standards volume information, refer to the standard’s Document Summary page on Available from the U.S. Department of Commerce, 1401 Constitution Ave.,
the ASTM website. NW Washington, DC 20230, http://ts.nist.gov/Standards/Conformity/vps.cfm.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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D5516 − 09
4. Summary of Test Method required. Alternate 610 mm (2 ft) long sections to be treated
andadjacentuntreated610mm(2ft)sections(seeFig.1)shall
4.1 After preconditioning (see 6.5), matched specimens of
have visually similar wood quality.
treatedanduntreatedplywoodwillbeexposedto77°C(170°F)
6.1.2.1 Specimens shall be inspected and the culling of
temperature and relative humidity equal to or greater than
specimens done as necessary in accordance with the criteria in
50%
...

This document is not anASTM standard and is intended only to provide the user of anASTM 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.
Designation:D5516–03 Designation: D 5516 – 09
Standard Test Method for
Evaluating the Flexural Properties of Fire-Retardant Treated
1
Softwood Plywood Exposed to Elevated Temperatures
This standard is issued under the fixed designation D5516; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This test method is designed to determine the effect of exposure to high temperatures and humidities on the flexure
properties of fire-retardant treated softwood plywood. In this test method, plywood is exposed to a temperature of 77°C (170°F).
1.2 The purpose of the test method is to compare the flexural properties of fire-retardant treated plywood relative to untreated
plywood. The results of tests conducted in accordance with this test method provide a reference point for estimating strength
temperature relationships. This test method is intended to provide an accelerated test at elevated temperatures and controlled
humidities of plywood sheathing treated with the same chemical formulation(s) and processing conditions as plywood used
commercially.
1.3The values stated in SI units are to be regarded as the standard. The values in parentheses are for information only.
1.3 The values stated in SI units are to be regarded as standard. The values given in parentheses are mathematical conversions
to inch-pound units that are provided for information only and are not considered standard.
1.4 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
2
2.1 ASTM Standards:
D9 Terminology Relating to Wood Terminology Relating to Wood and Wood-Based Products
D1165 Nomenclature of DomesticCommercial Hardwoods and Softwoods
D2915 Practice for Evaluating Allowable Properties for Grades of Structural Lumber
D3043 Test Methods for Structural Panels in Flexure
D5516Test Methods for Evaluating the Mechanical Properties of Fire-Retardant Treated Softwood Plywood Exposed to
2
Elevated Temperatures
D6305 Practice for Calculating Bending Strength DesignAdjustment Factors for Fire-Retardant-Treated Plywood WoodRoof
Sheathing
E84 Test Method for Surface Burning Characteristics of Building Materials
E176 Terminology of Fire Standards
2.2 Other Standards:
3
AWPAC–27 AWPAC-27 Plywood-Fire Retardant Treatment by Pressure Processes
4
NFPA703 Standard for Fire Retardant Impregnated Wood and Fire Retardant Coatings for Building Materials
U.S. Product StandardPS1for Construction and Industrial Plywood
NFPA703StandardforFireRetardantImpregnatedWoodandFireRetardantCoatingsforBuildingMaterialsPS1 U.S.Product
5
Standard for Structural Plywood
5
PS2 U.S. Product Standard for Wood-Based Structural Use Panels
1
This test method is under the jurisdiction of ASTM Committee D07 on Wood and is the direct responsibility of Subcommittee D07.07 on Fire Performance of Wood.
CurrenteditionapprovedApril10,2003.May15,2009.PublishedJune2003.2009.Originallyapprovedin1991asES20–91.Lastpreviouseditionapprovedin20022003
as D5516–023.
2
ForreferencedASTMstandards,visittheASTMwebsite,www.astm.org,[e-mail] Annual Book ofASTM Standards
, Vol 04.10.volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Annual Book of ASTM Standards, Vol 04.07.
3
Available from American Wood Protection Association (AWPA), P.O. Box 361784, Birmingham, AL 35236-1784, http://www.awpa.com.
4
Available from American Wood-Preservers’ Assoc., P.O. Box 5690, Granbury, TX 76049–0690.
4
Available from National Fire Protection Association (NFPA), 1 Batterymarch Park, Quincy, MA 02169-7471, http://www.nfpa.org.
5
Available from U.S. Department of Commerce, Washington, DC.
5
Available from the U.S. Department of Commerce, 1401 Constitution Ave., NW Washington, DC 20230, http://ts.nist.gov/Standards/Conformity/vps.cfm.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

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D5516–09
3. Terminology
3.1 Definitions—Definitions used in this test method are in accordance with Terminologies D9
...