ASTM D8223-19

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D8223 − 19
Standard Practice for
Evaluation of Fire-Retardant Treated Laminated Veneer
Lumber
This standard is issued under the fixed designation D8223; 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. Scope D3201/D3201M Test Method for Hygroscopic Properties of
Fire-Retardant Wood and Wood-Based Products
1.1 This practice covers procedures for the evaluation of
D5456 Specification for Evaluation of Structural Composite
laminated veneer lumber (LVL) pressure-treated with commer-
Lumber Products
cially available fire retardants after exposure to both standard
D5664 Test Method for Evaluating the Effects of Fire-
environmentalconditionsandanextendedexposuretoelevated
Retardant Treatments and Elevated Temperatures on
temperature.
Strength Properties of Fire-Retardant Treated Lumber
1.2 LVL products utilizing overlays or fire-retardant paints
D6841 Practice for Calculating Design Value Treatment
andcoatingsrequireotherconsiderationsandareoutsideofthe
Adjustment Factors for Fire-Retardant-Treated Lumber
scope of this practice.
E84 Test Method for Surface Burning Characteristics of
1.3 LVL products manufactured for rim board applications Building Materials
E2768 Test Method for Extended Duration Surface Burning
requireotherconsiderationsandareoutsideofthescopeofthis
practice. CharacteristicsofBuildingMaterials(30minTunnelTest)
2.2 Other Standards:
1.4 This practice provides one method to establish design
ANSI/AWC National Design Specification for Wood Con-
valuesforfire-retardanttreated(FRT)LVL.Itisnotintendedto
struction
preclude the use of alternative methods for deriving design
AWPA E12 Standard Method for Determining Corrosion of
values, such as Test Method D5664 and Practice D6841 for
Metal in Contact with Treated Wood
FRT lumber.
UL723 Test for Surface Burning Characteristics of Building
1.5 This standard does not purport to address all of the
Materials
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
3. Terminology
priate safety, health, and environmental practices and deter-
3.1 Definitions—Definitions used in this practice are in
mine the applicability of regulatory limitations prior to use.
accordance with Terminology D9 and Specification D5456.
1.6 This international standard was developed in accor-
dance with internationally recognized principles on standard- 3.2 Definitions of Terms Specific to This Standard:
ization established in the Decision on Principles for the
3.2.1 design value adjustment factor, C —factor used to
tr
Development of International Standards, Guides and Recom- adjust the design value for FRT LVL that will be exposed to
mendations issued by the World Trade Organization Technical
end-use temperatures in excess of 38 °C (100 °F) but not
Barriers to Trade (TBT) Committee. exceeding 66 °C (150 °F), depending on the ratio of f and
tr,108
f , and the climate zone.
tr,0
2. Referenced Documents
3.2.2 f —mean property of FRT LVL equilibrated to
tr,0
2.1 ASTM Standards:
standard conditions of 6.3.1.
D9 Terminology Relating to Wood and Wood-Based Prod-
3.2.3 f —mean property of FRT LVL after 108-day
tr,108
ucts
exposure to elevated temperature and relative humidity of
6.3.2.
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.
Current edition approved July 1, 2019. Published August 2019. DOI: 10.1520/ AvailablefromAmericanWoodCouncil(AWC),222CatoctinCircle,SE,Suite
D8223-19. 201, Leesburg, VA 20175, http://www.awc.org.
2 4
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Available from American Wood Protection Association (AWPA), P.O. Box
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM 361784, Birmingham, AL 35236-1784, http://www.awpa.com.
Standards volume information, refer to the standard’s Document Summary page on Available from Underwriters Laboratories (UL), 333 Pfingsten Road,
the ASTM website. Northbrook, IL 60062-2096, https://www.ulstandards.ul.com.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D8223 − 19
4. Summary of Practice untreated LVL that has been previously evaluated in accor-
dance with Specification D5456, this section is not required.
4.1 This practice establishes requirements for the evaluation
of LVL pressure-treated with commercially available fire
6.2 Fire Retardant Treatment:
retardants. The FRT LVLis considered as a new grade of LVL
6.2.1 The fire retardant formulation, and the treatment
and evaluated in the same manner as a grade of untreated LVL
processes and conditions used for the FRT LVL shall be
in accordance with Specification D5456 after exposure to
documented in accordance with the treating plant’s quality
environmental conditions specified in 4.2 and 4.3.
manual. The retention level of each charge shall not be less
than the midpoint of the retention range as specified for the
4.2 The FRT LVL shall be evaluated for the initial FRT
product in the quality manual. Changes in the fire retardant
treatment effect after conditioning to the standard moisture
formulation or the treatment processes and conditions shall
conditions specified in 6.3.1. The data from these qualification
require a new FRT LVL evaluation.
tests are used to establish the design value in accordance with
6.2.2 After the fire-retardant treatment, all specimens shall
Specification D5456 for FRT LVL that will be exposed to
bere-driedinaccordancewiththeFRT-manufacturer’spractice
end-use temperatures not in excess of 38 °C (100 °F).
documented in the in-plant quality manual. The treated pieces
4.3 The FRT LVL shall be evaluated for the additional
shallberedriedatthemaximumspecifieddrybulbtemperature
hygrothermal effects after an extended exposure to elevated
with a –2 °C (4 °F) tolerance for 21 h of the first 24-h period.
temperature specified in 6.3.2. The data from these qualifica-
For the remainder of the drying period, the tolerance shall be
tion tests are used to establish the design value adjustment
–3 °C (5 °F). There is no upper limit on the re-drying tempera-
factors in accordance with 6.5.2 for FRT LVL that will be
ture. Sticker all test pieces to obtain proper air flow across both
exposed to end-use temperatures in excess of 38 °C (100 °F)
surfacesandtoprovideevendrying.Subsequentchangesusing
but not exceeding 66 °C (150 °F).
a faster or hotter re-drying schedule shall require a new FRT
LVL evaluation.
5. Significance and Use
6.3 Pre-Evaluation Conditioning:
5.1 Designvaluesobtainedfrom4.2arepermittedforusein
6.3.1 Specimens Tested for Initial Treatment Effect—After
design where the end-use temperature does not exceed 38 °C
re-drying, all treated specimens for the initial FRT treatment
(100 °F).
effect shall be equilibrated to constant weight at 20 6 6°C
5.1.1 The mean test values for the properties evaluated in
(68 6 11 °F) and 65 % relative humidity in accordance with
4.2(f )and4.3(f )shallbeusedtodeterminedesignvalue
tr,0 tr,108
Section 6.3 of Specification D5456 before evaluation testing in
adjustment factors for FRT LVL that will be exposed to
accordance with 6.4.
end-use temperatures in excess of 38 °C (100 °F) but not
6.3.2 Specimens Tested After Hygrothermal Effect—After
exceeding 66 °C (150 °F). Temperature adjustment factors in
re-drying,alltreatedspecimensfortheadditionalhygrothermal
accordance with the National Design Specification for Wood
effects shall be conditioned at 66 6 2 °C (150 6 4 °F) and
Construction (NDS) shall also be applied in these applications.
50 % or higher relative humidity for 108 6 3 days. Upon
completion of the elevated temperature exposure, the speci-
6. Procedure
mens shall be re-equilibrated to constant weight at 20 66°C
6.1 Selection of LVL Materials:
(68 6 11 °F) and 65 % relative humidity in accordance with
6.1.1 Untreated LVLmaterials selected for the fire-retardant
Section 6.3 of Specification D5456 before evaluation testing in
treatment shall meet pertinent requirements for LVLin Section
accordance with 6.4.1.
4 of Specification D5456.
NOTE 2—Appendix X1 provides background information for this test
6.1.2 Sampling requirements for untreated LVL materials
protocol.
selected for the fire-retardant treatment shall meet the require-
mentsspecifiedinSections6.1and6.2ofSpecificationD5456. 6.4 Evaluation of FRT LVL Properties:
6.4.1 All mechanical and physical properties, connections,
NOTE 1—Due to possible damage during transportation and handling,
shear modulus, bond durability, and product durability of the
additional specimens are recommended to be sampled to ensure a
FRT LVL shall be evaluated by qualification testing in accor-
sufficient number of specimens are available for evaluation after the fire
retardant treatment.
dancewithSpecificationD5456afterenvironmentalcondition-
ing in accordance with 6.3.1 and 6.3.2.
6.1.3 Samples for fire-retardant treatment shall be prepared
to sizes prior to FRT treatment so that the cross-sectional 6.4.2 Surface burning characteristics of the FRT LVL after
environmental conditioning in accordance with 6.3.1 shall be
dimensions of the samples are representative of the cross-
section dimensions required by Specification D5456 and shall evaluated in accordance with Test Method E84 or UL 723
extended to 30 min. Only the wide face of the FRT LVL is
include incising if the actual production requires incising to
required to be tested. The FRT LVL shall have a flame-spread
achieve the targeted fire-retardant chemical retention.
index of 25 or less for the 10-min test in accordance with Test
6.1.4 To provide a basis for the quality assurance testing
Method E84 or UL 723 and the flame front shall not progress
required in Section 10.4 of Specification D5456, untreated
more than 3.2 m (10.5 ft) beyond the centerline of the burners
LVL materials selected for the fire-retardant treatment shall be
at any time during the entire 30-min test.
pre-evaluated for bending strength and stiffness, tensile
strength parallel to grain, moisture content, bond quality, and 6.4.2.1 Alternatively, surface burning characteristics of the
productdurabilityinaccordancewithSpecificationD5456.For FRT LVLafter environmental conditioning in accordance with
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