ASTM D5516-02

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 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 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-Nov-2002
• ICS: 79.060.20 - Fibre and particle boards
• Technical Committee: D07 - Wood
• Drafting Committee: D07.07 - Fire Performance of Wood

Relations

• Replaces: ASTM D5516-01a - Standard Test Method for Evaluating the Flexural Properties of Fire-Retardant Treated Softwood Plywood Exposed to Elevated Temperatures
• Effective Date: 10-Nov-2002
• Replaced By: ASTM D5516-03 - Standard Test Method for Evaluating the Flexural Properties of Fire-Retardant Treated Softwood Plywood Exposed to Elevated Temperatures
• Effective Date: 10-Apr-2003
• 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-Nov-2002
• Referred By: ASTM D6305-21 - Standard Practice for Calculating Bending Strength Design Adjustment Factors for Fire-Retardant-Treated Plywood Roof Sheathing
• Effective Date: 10-Nov-2002
• 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-Nov-2002

Standards Content (Sample)

NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: D 5516 – 02
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 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 Adjustment Factors for Fire-Retardant Plywood Wood
2
Sheathing
1.1 This test method is designed to determine the effect of
E 84 Test Method for Surface Burning Characteristics of
exposure to high temperatures and humidities on the flexure
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Building Materials
properties of fire-retardant treated softwood plywood. In this
3
E 176 Terminology of Fire Standards
test method, plywood is exposed to a temperature of 77°C
2.2 Other Standards:
(170°F).
AWPA C–27 Plywood-Fire Retardant Treatment by Pres-
1.2 The purpose of the test method is to compare the
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sure Processes
flexural properties of fire-retardant treated plywood relative to
U.S. Product Standard PS1 for Construction and Industrial
untreated plywood. The results of tests conducted in accor-
5
Plywood
dance with this test method provide a reference point for
NFPA 703 Standard for Fire Retardant Impregnated Wood
estimating strength temperature relationships. This test method
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and Fire Retardant Coatings for Building Materials
is intended to provide an accelerated test at elevated tempera-
tures and controlled humidities of plywood sheathing treated
3. Terminology
with the same chemical formulation(s) and processing condi-
3.1 Definitions—Definitions used in this test method are in
tions as plywood used commercially.
accordance with Terminologies D 9 and E 176, and Nomencla-
1.3 The values stated in SI units are to be regarded as the
ture D 1165.
standard. The values in parentheses are for information only.
3.2 Definitions of Terms Specific to This Standard:
1.4 This standard does not purport to address all of the
3.2.1 depth of beam—that dimension of the beam which is
safety concerns, if any, associated with its use. It is the
perpendicular to the span and parallel to the direction in which
responsibility of the user of this standard to establish appro-
the load is applied.
priate safety and health practices and determine the applica-
3.2.2 span—the total distance between the centerline of
bility of regulatory limitations prior to use.
supports providing the reactions on which a beam is supported
2. Referenced Documents to accommodate a transverse load.
3.2.3 span-depth ratio—the numerical ratio of span divided
2.1 ASTM Standards:
2
by beam depth.
D 9 Terminology Relating to Wood
D 1165 Nomenclature of Domestic Hardwoods and Soft-
4. Summary of Test Method
2
woods
4.1 After preconditioning (see 6.5), matched specimens of
D 2915 Practice for Evaluating Allowable Properties for
2 treated and untreated plywood will be exposed to 77°C (170°F)
Grades of Structural Lumber
2 temperature and relative humidity equal to or greater than
D 3043 Test Methods for Structural Panels in Flexure
50 %.
D 5516 Test Methods for Evaluating the Mechanical Prop-
4.2 Flexural strength tests are conducted on exposed speci-
erties of Fire-Retardant Treated Softwood Plywood Ex-
2 mens removed after various time periods. Flexural strength
posed to Elevated Temperatures
results shall include maximum moment, bending stiffness, and
D 6305 Practice for Calculating Bending Strength Design
work to maximum load. Adjust the test results to 67 % relative
humidity. (See X1.2.)
1
This test method is under the jurisdiction of ASTM Committee D07 on Wood
3
and is the direct responsibility of Subcommittee D07.07 on Fire Performance of Annual Book of ASTM Standards, Vol 04.07.
4
Wood. Available from American Wood-Preservers’ Assoc., P.O. Box 5690, Granbury,
Current edition approved Nov. 10, 2002. Published January 2003. Originally TX 76049–0690.
5
approved in 1991 as ES 20 – 91. Last previous edition approved in 2001 as Available from U.S. Department of Commerce, Washington, DC.
6
D 5516 – 01a. 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 superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
D5516–02
4.3 The purpose of this test method is to determine the ratio
of the treated mean to the untreated mean for the plywood and
plot the accelerated e
...