ASTM D3930-08(2023)

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: D3930 − 08 (Reapproved 2023)
Standard Specification for
Adhesives for Wood-Based Materials for Construction of
Manufactured Homes
This standard is issued under the fixed designation D3930; 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.
INTRODUCTION
This specification provides a standard for measuring and evaluating the performance of adhesives
that will be used in joints of wood-based materials in constructing manufactured homes. This
specification has two parts: Part I contains the requirements necessary for an adhesive to conform to
this specification; and Part II provides test methods by which the performance of the adhesives will
be measured. A classification system is provided that groups adhesives according to resistance to
deformation under load, resistance to moisture, and gap-filling ability. Minimum test values have been
specified for certain properties of durability, while other property requirements are left open-ended.
The test methods used to obtain these values reflect adverse exposure and stress conditions that exist
during the construction, transit, and use of manufactured homes. By using values published from these
prescribed test methods, the design engineer can select an adhesive that best meets the requirements
of a specific adhesive application.
The test methods used in this specification were developed predominantly from existing ASTM
standards, while others came from standards that have been generally accepted for years. Some test
methods were more recently developed. In most instances, only parts of these standards have been
used in this specification. Since no precision and bias statements are available from the original test
methods, none can be made for this specification at this time.
PART I— REQUIREMENTS
1. Scope
Number Test Section
1 Low Temperature 16
1.1 This specification provides the means to measure and
2 Dry Lumber 17
evaluate the performance of adhesives for structural or semi-
3 Gap-Filling 18
4 High Temperature 19
structural bonding of wood-to-wood in manufactured homes.
5 Type 3 Qualification 20
Wood as used in this specification includes lumber, plywood,
6 Type 2 Qualification 21
particleboard, gypsum board, and all materials having wood- 7 Aging, Film Oxidation 22
8 Aging, Bond Oxidation 23
based surfaces at the bondline. This specification does not
9 Resistance to Deformation, Creep 24
cover other adhesives used in manufactured homes such as
10 Mold 25
adhesives for carpet, floor tile, ceramic fixtures, plastic 11 Type 1 Qualification 26
laminates, trim and millwork, and similar nonstructural appli-
1.2 The values stated in inch-pound units are to be regarded
cations.
as standard. The values given in parentheses are mathematical
1.1.1 The performance of the adhesives is measured in the
conversions to SI units that are provided for information only
following tests:
and are not considered standard.
1.3 This standard does not purport to address all of the
This specification is under the jurisdiction of ASTM Committee D14 on
Adhesives and is the direct responsibility of Subcommittee D14.70 on Construction
safety concerns, if any, associated with its use. It is the
Adhesives.
responsibility of the user of this standard to establish appro-
Current edition approved May 1, 2023. Published May 2023. Originally
priate safety, health, and environmental practices and deter-
approved in 1980. Last previous edition approved in 2015 as D3930 – 08 (2015).
DOI: 10.1520/D3930-08R23. mine the applicability of regulatory limitations prior to use.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D3930 − 08 (2023)
1.4 This international standard was developed in accor- differ from standards in electronics. Some adhesives will bond
dance with internationally recognized principles on standard- by bridging without completely filling the gap; others by filling
ization established in the Decision on Principles for the the gap completely.
Development of International Standards, Guides and Recom-
3.2 Definitions of Terms Specific to This Standard:
mendations issued by the World Trade Organization Technical 4
3.2.1 manufactured home —a structure, transportable in
Barriers to Trade (TBT) Committee.
one or more sections which in the traveling mode is 8 body feet
or more in width or 40 body feet or more in length or when
2. Referenced Documents
erected on site, is 320 or more square feet and which is built on
2.1 ASTM Standards:
a permanent chassis and designed to be used as a dwelling with
A269 Specification for Seamless and Welded Austenitic
or without a permanent foundation when connected to the
Stainless Steel Tubing for General Service
required utilities, and includes the plumbing, heating, air-
A376/A376M Specification for Seamless Austenitic Steel
conditioning, and electrical systems contained therein. Calcu-
Pipe for High-Temperature Service
lations used to determine the number of square feet in a
D9 Terminology Relating to Wood and Wood-Based Prod-
structure will be based on the structure’s exterior dimensions
ucts
measured at the largest horizontal projections when erected on
D905 Test Method for Strength Properties of Adhesive site. These dimensions will include all expandable rooms, bay
Bonds in Shear by Compression Loading
windows, cabinets, and other projections containing interior
D907 Terminology of Adhesives space.
D1002 Test Method for Apparent Shear Strength of Single-
3.2.2 semi-structural adhesive—an adhesive capable of
Lap-Joint Adhesively Bonded Metal Specimens by Ten-
transferring required loads between adherends and which
sion Loading (Metal-to-Metal)
deforms a maximum of 0.050 in. (1.27 mm) under static load
D1165 Nomenclature of Commercial Hardwoods and Soft-
when tested in accordance with Test 9, Section 24.
woods
3.2.3 structural adhesive—an adhesive capable of transfer-
D2294 Test Method for Creep Properties of Adhesives in
ring required loads between adherends and which deforms a
Shear by Tension Loading (Metal-to-Metal)
maximum of 0.006 in. (0.15 mm) under static load when tested
D2339 Test Method for Strength Properties of Adhesives in
in accordance with Test 9, Section 24.
Two-Ply Wood Construction in Shear by Tension Loading
3.2.4 total deformation—the total dimensional change with
D3110 Specification for Adhesives Used in Laminate Joints
time of a material under constant load, and consisting of the
for Nonstructural Glued Lumber Products (Withdrawn
initial instantaneous elastic or rapid deformation and the slower
1996)
time dependent deformation or creep.
D3632 Test Method for Accelerated Aging of Adhesive
Joints by the Oxygen-Pressure Method
3.2.5 Type 1 adhesive—an adhesive that will retain its bond
D3931 Test Method for Determining Strength of Gap-Filling
integrity when the joint is repeatedly wetted and dried.
Adhesive Bonds in Shear by Compression Loading
3.2.6 Type 2 adhesive—an adhesive intended for use in
D4300 Test Methods for Ability of Adhesive Films to
protected locations but that will maintain its bond integrity
Support or Resist the Growth of Fungi
when the bond is subjected to occasional wetting.
E6 Terminology Relating to Methods of Mechanical Testing
3.2.7 Type 3 adhesive—an adhesive intended for use in
E41 Terminology Relating to Conditioning (Withdrawn
3 interior locations, but that will maintain its bond integrity
2019)
during conditions of high humidity.
3. Terminology
NOTE 1—The following ASTM standards may be referred to for other
terms used in this specification: D9, Terms Relating to Timber; D907,
3.1 Definitions:
Terms Relating to Adhesives; D1165, Nomenclature of Domestic Hard-
3.1.1 Many terms in this specification are defined in Termi-
woods and Softwoods; E6, Terms Relating to Methods of Mechanical
nology D907.
Testing; and E41, Terms Relating to Conditioning.
3.1.2 creep, n—in an adhesive, the time-dependent increase
4. Classification
in strain resulting from a sustained stress.
4.1 Adhesives shall be classified as follows (see Table 1):
3.1.3 gap-filling adhesive, n—an adhesive capable of form-
4.1.1 By resistance to deformation as:
ing and maintaining a bond between surfaces that are not
4.1.1.1 Group A, Structural; or Group B, Semistructural,
close-fitting.
4.1.2 By resistance to water and water vapor as:
3.1.3.1 Discussion—Close fitting is relative to a given
4.1.2.1 Type 1, Type 2, or Type 3, and
material and industry; for example, standards in construction
4.1.3 By gap-filling ability.
4.1.3.1 Those adhesives tested in accordance with Test 3,
Section 18, shall carry the designation G/F.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on This definition conforms to that of the U.S. Department of Housing and Urban
the ASTM website. Development (Manufactured Housing Construction and Safety Standards Act of
The last approved version of this historical standard is referenced on 1974 as amended in proposed rules in the Federal Register, Vol 48, No. 152, Aug.
www.astm.org. 7, 1981, pp. 40498 to 40500).
D3930 − 08 (2023)
TABLE 1 Tests Required for Group A (Structural), and Group B
5.5 High- and Low-Temperature Resistance—The adhesive
(Semi-Structural) Adhesives
is tested at high and low temperatures to determine whether
Tests Required
extremes in temperature would cause problems in bonding.
Type Recommended Use
(Test Number)
A B 5.6 Moisture Resistance—The adhesive is tested at three
1 interior-exterior 1, 2, 4, 7 (or 8), 9, 10, 11
A
2 interior-weather protected 1, 2, 4, 6, 7 (or 8), 9, 10 levels of exposure. Adhesive durability for Type 1 is deter-
A
3 interior 1, 2, 4, 5, 7 (or 8), 9, 10
mined by exposure to a cyclic boil and a vacuum-pressure test.
A
To qualify as G/F (gap-filling), adhesives must be tested by Test 3, Section 18.
For Type 2, a vacuum-soak is used. For Type 3, a humidity test
B
The exposure and testing conditions for the cyclic-boil and vacuum-pressure
at elevated temperature is used.
tests, described in the Exposure Conditions and Treatments section of Specifica-
tion D3110, shall apply to Test 11.
5.7 Aging, Oxidation Resistance—To ensure that the adhe-
sive does not become embrittled or substantially deteriorate
with age, the adhesive film or tensile lap shear specimens
bonded with the adhesive, are exposed to pure oxygen at an
5. Significance and Use
elevated temperature and pressure.
5.1 Shear Strength—This specification requires determining
5.8 Mold Resistance—Conditions fostering the growth of
ultimate shear strength of adhesive bonds under a variety of
mold are encountered in the structural spaces of walls, floors,
conditions of assembly and service.
and roofs. The adhesive is tested against three species of mold
5.2 Gap-Filling Ability—Gap-filling adhesives must be ca- commonly present on wood, either as separate tests or as a
pable of maintaining a bond between construction members single test with a mixed culture of the mold species.
whose faying surfaces are not closely matched. The gap-filling
ability and shear strength are determined for ⁄16 in. (1.6 mm) 6. Test Methods
gap between members. The adhesive manufacturer may qualify
6.1 The tests required for compliance with this specification
larger gap-filling abilities, provided the adhesive is tested and
are given in Table 1.
shear values are provided for the greater dimension.
6.2 The compliance criteria for Tests 1 through 11, Sections
5.3 Total Deformation Resistance—The total deformation of
16 – 26, are given in Table 2.
an adhesive under static load is used to establish the structural
6.2.1 For Tests 1 through 6, Sections 16 – 21, and Test 11,
grouping for the adhesive. The adhesive manufacturer deter-
Section 26, only test results must be reported.
mines the maximum shear stress below which the adhesive will
6.2.1.1 Type 1 adhesives in Group A or Group B shall be
perform structurally and semi-structurally in accordance with
evaluated on the basis of test specimens prepared in accordance
the description of terms used in this specification, and also
with Sections 14 and 26, and subsequently exposed and tested
reports the stress used for testing the adhesive. To ensure that
in accordance with the procedures for the cyclic-boil and
the total deformation is approaching a zero rate of increase, no
vacuum-pressure tests specified for wet-use adhesives in the
more than 25 % of the deformation is allowed to occur during
Exposure Conditions and Treatments section of Specification
the last half of the test period.
D3110. The only exception is that average strength values shall
5.4 Moisture and Temperature Limitations During be reported in pounds-force per square inch (or megapascals).
Fabrication—Adhesives may be used under a wide variety of 6.2.2 Minimum performance levels are given for Test 7,
moisture and temperature conditions. To ensure reliable per- Section 22; Test 8, Section 23; and Test 10, Section 25.
formance under test conditions, adhesive shear strength is 6.2.3 For Test 9, Section 24, an evaluation shall be made on
determined for specified adverse moisture and temperature the basis of the loads used to test the adhesive for total
conditions. deformation.
TABLE 2 Performance Requirements
Test Number Section Number Test Description Requirements
Conditions of Application:
A
1 16 low temperature shear strength
A
2 17 dry lumber shear strength
A
3 18 gap-filling shear strength
Measurements of Durability:
A
4 19 high temperature shear strength
A
5 20 Type 3 Qualification shear strength
A
6 21 Type 2 Qualification shear strength
7 22 aging, film oxidation one, 180° bend around a ⁄4 in. (6.4 mm) mandrel with none of
the 5 specimens breaking
8 23 aging, bond oxidation maintain 50 % of original shear strength
B
9 24 resistance to deformation (creep) Group A: 0.006 in. (0.152 mm)
B
Group B: 0.050 in. (1.27 mm)
10 25 mold no growth after 14 days
A
11 26 Type 1 Qualification shear strength
A
Post average shear strength.
B
Maximum allowable total deformation under given load and conditions of 24.2.2.
D3930 − 08 (2023)
TABLE 3 Summary of Shear Strength (lbf)
Repeatability Reproducibility
Repeatability Reproducibility
Average Δ Standard Standard
Material, Adhesive Limit Limit
x¯ Deviation Deviation
s d
(r) (R)
(Sr) (SR)
Plywood to Douglas Fir,
296 61 77 171 217
Adhesive A
Plywood to Douglas Fir,
567 86 258 242 723
Adhesive B
Plywood to Douglas Fir,
1367 262 446 735 1249
Adhesive C
TABLE 4 Summary of Wood Failure (%)
9.1.2 The shear strength precision statement was deter-
Population mined through statistical examination of results from nine
Average Δ
Material, Adhesive Standard
laboratories, on three adhesive materials. Doug-fir to PS1
x¯
s d
Deviation
plywood substrates were assembled and tested for each adhe-
Plywood to Douglas Fir, 0 0
sive. The three adhesives were the following:
Adhesive A
Plywood to Douglas Fir, 9 12 (1) one-component polyurethane
Adhesive B
(2) latex based low-VOC
Plywood to Douglas Fir, 43 27
(3) poly-vinyl acetate
Adhesive C
9.1.3 The shear strength precision statistics are expressed in
terms of within a laboratory (repeatability) and between-
laboratories (reproducibility). Standard deviation (sr and SR)
7. Sampling
and 95 % repeatability and reproducibility limits (r and R)
were selected as the precision statistics. See Table 3. Corre-
7.1 Take a representative sample from each lot of adhesive
sponding wood failure mean and standard deviation values are
to be tested.
displayed. See Table 4.
7.1.1 For liquid or paste adhesives, the sample from each lot
9.1.4 Qualification testing for Specification D3930 compli-
shall not be less than 1 qt (946 mL).
ance specifies testing a sample set of 24 replicates. The shear
7.1.2 For adhesives consisting of more than one part, take a
strength variability of a sample group larger than 5 replicates
sufficient sample of each part in order to prepare not less than
would represent the adhesive performance estimate with a
2 lb (908 g) of adhesive at the time of use.
higher degree of probability.
7.1.3 For dry adhesives, the sample from each lot shall not
9.1.4.1 Committee D14 plans for a future interlaboratory
be less than 2 lb (908 g).
study of Specification D3930 with the standard’s recom-
7.2 Consult the adhesive manufacturer as to proper packing
mended test set of 24 replicates.
and handling of the sample.
9.1.4.2 All of the test specimens were assembled and precut
into shear blocks by an accredited laboratory professional
8. Retest and Rejection
technician. The test adhesives samples used for specimen
8.1 If the results of any initial test do not conform to the
preparation were of the same batch on the same day with the
requirements prescribed in this specification, that test shall be
same equipment. Variability contributors such as substrate
repeated on two additional sets of specimens from a new
moisture content, adhesive application rate, assembly time,
sample of the same lot of adhesive, each of which shall
press pressure, and curing conditions met the standard’s
conform to the requirements specified. If either of these two
tolerance.
additional sets of specimens fail to meet the requirements, the
9.1.5 The precision of the test method may be affected by
lot or batch of material shall be rejected.
the inherent natural differences of wood mechanical properties.
9. Precision and Bias NOTE 2—The Wood Handbook indicates a 14 % coefficient of varia-
tion for clear wood including shear strength parallel to grain and
9.1 Precision:
maximum shearing strength.
9.1.1 The precision of this test method is based on an
9.1.5.1 Other sources of variability include test equipment
interlaboratory study of Specification D3930 – 93a (2005), Test
suitability, oven temperature control, equipment set-up and
Number 4, High Temperature, conducted in 2006. Each of nine
accuracy of force measurement. For this study the variability
laboratories tested five replicates of specimens prepared using
contributed by different laboratories composed of different
three different adhesives, recording shear strength (lbf) and
personnel and equipment was included in the analysis.
percentage of wood failure. Table 3 and Table 4 summarize the
9.1.6 Repeatability—Two individual test results obtained
precision statistics for the statistical analysis on the data
within one laboratory shall be judged not equivalent if they
collected.
Wood Handbook: Wood as an Engineering Material, U.S. Dept. of Agriculture
Supporting data have been filed at ASTM International Headquarters and may Handbook 72, Revised, 1974, Chapter 3, p. 8. Available from U.S. Department of
be obtained by requesting Research Report RR:D14-1012. Contact ASTM Customer Agriculture, Forrest Products Laboratory, One Gifford Pinchot Drive, Madison, WI
Service at service@astm.org. 53726–2398, http://www.fpl.fs.fed.us.
D3930 − 08 (2023)
differ by more than the “r” value for that material; “r” is the 13.1.3 Conditions for application of the adhesive including
interval representing the critical difference between two test the rate of spread or thickness of film, bead size, number of
results for the same material, obtained by the same operator coats to be applied, temperature of application, whether to be
using the same equipment on the same day in the same applied to one or both surfaces, and the condition of drying
laboratory. where more than one coat is required.
9.1.7 Reproducibility—Two individual test results should be
13.1.4 Adhesive open and closed assembly time over the
judged not equivalent if they differ by more than the “R” value
ambient temperature and humidity range specified.
for that material; “R” is the interval representing the difference
13.1.5 Curing conditions, including the amount of pressure
between two test results for the same material, obtained by
to be applied, if any, whether this pressure may be provided by
different operators using different equipment in different labo-
nails or staples, or both, or by other means, the length of time
ratories.
under pressure and the temperature of the assembly when
9.1.8 The Reproducibility Limits (R) with Adhesives B and
under pressure. It should be stated whether this temperature is
C appear to be significantly greater than the Repeatability
that of the glue line, or of the atmosphere at which the
Limits (r). This may indicate an additional source or amount of
assembly is to be maintained.
variability exits between laboratories than within each labora-
13.1.6 Storage Conditions Prior to Use—Instructions shall
tory.
include data on shelf life and storage under various conditions.
9.1.9 Any judgment in accordance with statements 9.1.1 or
9.1.2 would have an approximate 95 % probability of being PART II—TEST METHODS
correct.
14. Test Assemblies for Tests 1 through 6 and 11
9.2 Bias—At the time of the study, there was no accepted
reference material suitable for determining the bias for this test
14.1 Materials—Use the following materials for the prepa-
method, therefore no statement on bias can be made.
ration of test assemblies for Tests 1 through 6 and 11.
14.1.1 Plywood—Use ⁄8 in. (16 mm) commercial softwood
10. Certification
plywood of underlayment grade with exterior adhesive, or
10.1 Upon request of the purchaser in the contract or order,
sanded exterior-grade plywood (Group I species). To help
a manufacturer’s certification that the adhesive was manufac-
ensure uniformity of the bonding surface, select plywood
tured in conformance with this specification shall be furnished
having all sapwood or all heartwood in the face veneer—not
at the time of shipment.
both (Note 3). Also check the face veneer to see that lathe
checks do not appear in the bonding surface. The plywood
11. Packaging
must be free of splits, patches, core voids, knots, and knot holes
11.1 The material shall be packaged in standard commercial in the bonding area. The plywood must be flat within ⁄16 in. (2
mm), that is, the maximum permissible bow for a 16 in.
containers, as required by Department of Transportation
regulations, if applicable. The containers shall be so con- (406 mm) length of plywood shall be ⁄16 in. (2 mm). Bowed
plywood may be used only if it meets the limitation above and
structed as to ensure acceptance by common or other carrier for
safe transportation at the lowest rate to the point of delivery, if the convexity occurs on the bottom surface that contacts the
lumber.
unless otherwise specified in the contract or order. The con-
tainer shall provide suitable protection of the contents to ensure
14.1.2 Framing Lumber—Use 2 in. (51 mm) (nominal)
that the adhesive is not spoiled due to exposure to the elements. Douglas-fir or southern pine lumber that is clear and dry. Select
lumber that is all sapwood or all heartwood, except as noted for
12. Marking
southern pine (Note 3). The lumber must have been knife-
12.1 Shipping containers or cases shall be marked with the planed on all four surfaces at the factory, or so prepared in the
laboratory. The lumber must be free of splits, knots, knot holes,
following information:
12.1.1 Manufacturer’s name, product code number, batch bark, and pitch on the surface being bonded.
lot number, and date of manufacture.
NOTE 3—Only the sapwood of loblolly, slash, longleaf, and shortleaf
12.1.2 Group and type of adhesive as classified in Table 1,
pine may be used.
including use of the symbol G/F if the adhesive is gap-filling.
14.1.3 Adhesive—Use the adhesive in accordance with the
12.1.3 Special handling instructions during product transfer.
manufacturer’s instructions.
12.1.4 Special precautions required because of product
14.1.4 Nails—In preparing test joint assemblies, use six-
toxicity, flammability, or such information pertinent to the
penny (2.1 in. (53 mm) in length) double-headed scaffold nails
proper handling and storage of the product.
to fasten plywood and lumber together (Note 4). If these are
13. Adhesive Manufacturer’s Instructions not available, use eight-penny (2.6 in. (66 mm) in length)
double-headed nails. If the nail points are a problem when they
13.1 The adhesive manufacturer shall provide instructions
protrude from the assembly, cut them to a minimum of 2 in. (51
for the proper preparation of the adhesive and proper use with
mm) in length, as measured from the cut point to the inside
the material to be bonded. Such instructions shall indicate:
head.
13.1.1 The moisture content range of the materials being
bonded at the time of bonding.
NOTE 4—Six-penny double-headed nails usually are not stocked in
13.1.2 Complete mixing directions for the adhesives. retail hardware stores. However, they are manufactured and may be
D3930 − 08 (2023)
obtained at some wholesale building supply dealers such as Georgia- NOTE 5—TFE-fluorocarbon sheet is suggested for use as spacers.
Pacific Corp.
14.2 Clean the surfaces of wood to be bonded so they are
14.1.5 Spacers—For the gap-filling test, separate the ply-
free from oil, dust, and other contaminants that would be
1 1
wood and lumber with spacers ⁄4 in. (6 mm) wide, ⁄16 in. (1.6
detrimental to satisfactory bonding.
mm) thick, and 4 in. (102 mm) long (Note 5).
14.3 Cut the lumber and plywood to the required size as
shown in Fig. 1 or Fig. 2 (Note 6). If the lumber must be
reduced in height, retain at least one mill-finished surface as
the surface to be bonded. If the lumber must be reduced in
width to achieve a maximum 1 ⁄2 in. (38 mm) dimension, plane
both sides in equal amounts.
14.4 Predrill the plywood and lumber to receive nails as
shown in Fig. 1 or Fig. 2. Drill to a depth of 1 in. (25 mm)
through the plywood and into the lumber. Use a No. 46
(diameter 0.081 in. (2.05 mm)) drill for the six-penny nail and
a No. 43 (diameter 0.089 in. (2.26 mm)) drill for the eight-
penny nail.
14.5 Conditioning of Materials Before Bonding:
14.5.1 Prepare the adhesive in accordance with the manu-
facturer’s instructions, or if ready to use, condition at 75 °F 6
5.0 °F (23.9 °C 6 2.8 °C) for a period of 48 h prior to use.
14.5.2 Condition the lumber and plywood to an EMC
(equilibrium moisture content) of 10 % to 12 % in accordance
Table of Dimensions
in. (mm)
Dimension Tolerance
3 1
A 15 ⁄4 (400) ⁄8 (3)
B 5 ⁄2 (140) .
C 16 (406) .
D 15 (381) ⁄8 (3)
E 13 (330) ⁄8 (3)
F 1 (25) ⁄8 (3)
1 1
G 1 ⁄2 (38) min ⁄16 (2)
3 1
H 1 ⁄8 (33) ⁄16 (2)
1 1
J 1 ⁄2 (38) max ⁄16 (2)
FIG. 1 Test Assembly
D3930 − 08 (2023)
(a) Positioning Jig
(b) Test Assemblies
Table of Dimensions
in. (mm)
Dimension Tolerance
3 1
A 15 ⁄4 (400) ⁄8 (3)
1 1
B 6 ⁄2 (165) ⁄8 (3)
C 2 (51) ⁄16 (2)
D 15 (381) ⁄8 (3)
1 1
E 1 ⁄2 (38) ⁄16 (2)
F 1 (25) ⁄8 (3)
G 13 (330) ⁄8 (3)
1 1
H ⁄2 (13) ⁄16 (2)
FIG. 2 Alternative Positioning Jig and Test Assemblies
assemblies for Test 1 or Test 2 with assemblies for other test numbers in
with the schedule in Appendix X2, before proceeding with the
the same jig.
conditioning schedules of Table 5 for Tests 1 through 6.
14.7 General Procedure for Preparation of Test Assemblies:
14.6 Number of Test Assemblies—Prepare three test assem-
blies as shown in Fig. 1 or Fig. 2, using positioning jigs shown
14.7.1 Set nails in the plywood through the predrilled holes
in Fig. 2 or Fig. 3, for each set of test conditions within each
so that tips of the nails extend ⁄16 in. (5 mm) beyond the
test (Note 6). Cut ei
...