ASTM D5516-01a

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

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 77oC (170oF).
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 the standard. The values in parentheses are for information only.
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: 09-Sep-2001
• ICS: 79.060.20 - Fibre and particle boards
• Technical Committee: D07 - Wood
• Drafting Committee: D07.07 - Fire Performance of Wood

Relations

• Replaces: ASTM D5516-01 - Standard Test Method for Evaluating the Flexural Properties of Fire-Retardant Treated Softwood Plywood Exposed to Elevated Temperatures
• Effective Date: 10-Sep-2001
• Replaced By: ASTM D5516-02 - Standard Test Method for Evaluating the Flexural Properties of Fire-Retardant Treated Softwood Plywood Exposed to Elevated Temperatures
• Effective Date: 10-Nov-2002
• 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: 10-Sep-2001
• 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: 10-Sep-2001
• Referred By: ASTM D6305-21 - Standard Practice for Calculating Bending Strength Design Adjustment Factors for Fire-Retardant-Treated Plywood Roof Sheathing
• Effective Date: 10-Sep-2001

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: D 5516 – 01a
Standard Test Method for
Evaluating the Flexural Properties of Fire-Retardant Treated
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Softwood Plywood Exposed to Elevated Temperatures
This standard is issued under the fixed designation D 5516; 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 84 Test Method for Surface Burning Characteristics of
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Building Materials
1.1 This test method is designed to determine the effect of
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E 176 Terminology of Fire Standards
exposure to high temperatures and humidities on the flexure
2.2 Other Standards:
properties of fire-retardant treated softwood plywood. In this
AWPA C–27 Plywood-Fire Retardant Treatment by Pres-
test method, plywood is exposed to a temperature of 77°C
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sure Processes
(170°F).
U.S. Product Standard PS1 for Construction and Industrial
1.2 The purpose of the test method is to compare the
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Plywood
flexural properties of fire-retardant treated plywood relative to
NFPA 703 Standard for Fire Retardant Impregnated Wood
untreated plywood. The results of tests conducted in accor-
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and Fire Retardant Coatings for Building Materials
dance with this test method provide a reference point for
estimating strength temperature relationships. This test method
3. Terminology
is intended to provide an accelerated test at elevated tempera-
3.1 Definitions—Definitions used in this test method are in
tures and controlled humidities of plywood sheathing treated
accordance with Terminologies D 9 and E 176, and Nomencla-
with the same chemical formulation(s) and processing condi-
ture D 1165.
tions as plywood used commercially.
3.2 Definitions of Terms Specific to This Standard:
1.3 The values stated in SI units are to be regarded as the
3.2.1 depth of beam—that dimension of the beam which is
standard. The values in parentheses are for information only.
perpendicular to the span and parallel to the direction in which
1.4 This standard does not purport to address all of the
the load is applied.
safety concerns, if any, associated with its use. It is the
3.2.2 span—the total distance between the centerline of
responsibility of the user of this standard to establish appro-
supports providing the reactions on which a beam is supported
priate safety and health practices and determine the applica-
to accommodate a transverse load.
bility of regulatory limitations prior to use.
3.2.3 span-depth ratio—the numerical ratio of span divided
2. Referenced Documents by beam depth.
2.1 ASTM Standards:
4. Summary of Test Method
2
D 9 Terminology Relating to Wood
4.1 After preconditioning (see 6.5), matched specimens of
D 1165 Nomenclature of Domestic Hardwoods and Soft-
2 treated and untreated plywood will be exposed to 77°C (170°F)
woods
temperature and relative humidity equal to or greater than
D 2915 Practice for Evaluating Allowable Properties for
2 50 %.
Grades of Structural Lumber
2 4.2 Flexural strength tests are conducted on exposed speci-
D 3043 Methods of Testing Structural Panels in Flexure
mens removed after various time periods. Flexural strength
D 5516 Test Methods for Evaluating the Mechanical Prop-
results shall include maximum moment, bending stiffness, and
erties of Fire-Retardant Treated Softwood Plywood Ex-
2 work to maximum load. Adjust the test results to 67 % relative
posed to Elevated Temperatures
humidity. (See X1.2.)
D 6305 Practice for Calculating Bending Strength Design
4.3 The purpose of this test method is to determine the ratio
Adjustment Factors for Fire-Retardant Plywood Wood
2 of the treated mean to the untreated mean for the plywood and
Sheathing
1 3
This test method is under the jurisdiction of ASTM Committee D07 on Wood Annual Book of ASTM Standards, Vol 04.07.
4
and is the direct responsibility of Subcommittee D07.07 on Fire Performance of Available from American Wood-Preservers’ Assoc., P.O. Box 5690, Granbury,
Wood. TX 76049–0690.
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Current edition approved Sept. 10, 2001. Published November 2001. Originally Available from U.S. Department of Commerce, Washington, DC.
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published as ES 20 – 91. Last previous edition D 5516 – 01. Available from National Fire Protection Association, P.O. Box 9191, Quincy,
2
Annual Book of ASTM Standards, Vol 04.10. MA 02269-9101.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
D 5516
plot the accelerated exposure strength data again
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