ASTM E72-22
(Test Method)Standard Test Methods of Conducting Strength Tests of Panels for Building Construction
Standard Test Methods of Conducting Strength Tests of Panels for Building Construction
SIGNIFICANCE AND USE
8.1 The procedures described are those that will test the behavior of segments of wall construction under conditions representative of those encountered in service. Performance criteria based on data from those procedures can ensure structural adequacy and service life.
SCOPE
1.1 These test methods cover the following procedures for determining the structural properties of segments of wall, floor, and roof constructions:
Section
Test Specimens
3
Loading
4
Deformation Measurements
5
Reports
6
Precision and Accuracy
7
TESTING WALLS
Significance and Use
8
Compressive Load
9
Tensile Load
10
Transverse Load—Specimen Horizontal
11
Transverse Load—Specimen Vertical
12
Concentrated Load
13
Impact Load—See Test Methods E695 and E661
Racking Load—Evaluation of Sheathing Materials
on a Standard Wood Frame
14
Racking Load—Evaluation of Sheathing Materials (Wet)
on a Standard Wood Frame
15
TESTING FLOORS
Significance and Use
16
Transverse Load
17
Concentrated Load
18
Impact Load—See Test Methods E695 and E661
TESTING ROOFS
Section
Significance and Use
19
Transverse Load
20
Concentrated Load
21
APPENDIX
Technical Interpretation
Appendix X1
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.3 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.4 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.
General Information
- Status
- Published
- Publication Date
- 30-Sep-2022
- Technical Committee
- E06 - Performance of Buildings
Relations
- Effective Date
- 01-Mar-2020
- Effective Date
- 01-Feb-2020
- Effective Date
- 01-Aug-2019
- Effective Date
- 01-Jul-2018
- Effective Date
- 01-Jul-2018
- Effective Date
- 01-Jul-2018
- Effective Date
- 15-Nov-2016
- Effective Date
- 01-Jun-2015
- Effective Date
- 01-Jun-2014
- Effective Date
- 01-May-2014
- Effective Date
- 01-May-2014
- Effective Date
- 01-Oct-2012
- Effective Date
- 01-May-2011
- Effective Date
- 01-Apr-2011
- Effective Date
- 15-Jan-2011
Overview
ASTM E72-22: Standard Test Methods of Conducting Strength Tests of Panels for Building Construction provides well-defined procedures for evaluating the structural performance of wall, floor, and roof panels used in building construction. Established by ASTM International, this standard ensures that panel segments are tested under conditions that closely replicate those experienced in service, which is critical for guaranteeing the structural adequacy and longevity of construction materials and assemblies.
The standard is widely recognized across the building and construction industries, enabling designers, engineers, builders, and building officials to obtain reliable data on the strength and rigidity of various construction elements. ASTM E72-22 informs engineering judgment and design by providing a systematic approach to appraising panels' behavior under different load conditions.
Key Topics
ASTM E72-22 covers several essential test methods related to the structural assessment of building panels:
- Test Specimens: Guidance on representative specimen construction, size selection, and handling for accurate simulation of real-world conditions.
- Loading Procedures: Step-by-step instructions for applying various loads, including compressive, tensile, transverse (horizontal and vertical), concentrated, impact, and racking loads.
- Deformation Measurements: Methods for precision measurement of panel deformation to construct detailed load-deformation curves.
- Reporting Requirements: Standardized protocols for data presentation, including graphical plots and comprehensive reporting in line with ASTM guidelines.
- Precision and Bias Considerations: Discussion on ensuring valid results across diverse material types and construction methods.
- Significance and Use: Explanations of test relevance for building safety, service life, and structural reliability.
Applications
ASTM E72-22 is crucial in a variety of contexts within building construction and material evaluation, including:
- Structural System Design: Used by architects and engineers to verify the load-bearing capacity of wall, floor, and roof panels before specifying materials and assemblies in new construction.
- Product Development and Quality Control: Manufacturers utilize these test methods to develop, qualify, and compare new building materials, including sheathing products, sandwich panels, and prefabricated components.
- Building Code Compliance: Assists builders and regulators in ensuring that construction panels meet minimum strength requirements for safety and durability, supporting both prescriptive and performance-based code provisions.
- Performance Assessment of Sheathing Materials: Particularly for racking resistance, ASTM E72-22 enables evaluation of wood-framed wall assemblies with different sheathing configurations under simulated lateral loads, such as those imposed by wind or seismic activity.
- Comparative Analysis: Provides a benchmark for comparing the performance of various construction types or manufacturing practices under standardized conditions.
Related Standards
ASTM E72-22 references and aligns with several related standards to ensure comprehensive and consistent testing, including:
- ASTM D2395 - Test Methods for Density and Specific Gravity of Wood and Wood-Based Materials
- ASTM D4442 - Test Methods for Direct Moisture Content Measurement of Wood and Wood-Based Materials
- ASTM E4 - Practices for Force Calibration and Verification of Testing Machines
- ASTM E573 - Practice for Static Load Testing of Truss Assemblies
- ASTM E564 - Practice for Static Load Test for Shear Resistance of Framed Walls for Buildings
- ASTM E575 - Practice for Reporting Data from Structural Tests of Building Constructions, Elements, Connections, and Assemblies
- ASTM E661 and E695 - Methods for floor and roof sheathing performance under concentrated static and impact loads
- NIST PS20 - American Softwood Lumber Standard
Conclusion
ASTM E72-22 is an essential standard for reliable evaluation of the structural properties of panels in building construction. Its test methods inform safe design, product quality, and code compliance, supporting industry-wide best practices. By following ASTM E72-22, building professionals can ensure that wall, floor, and roof panels meet the necessary strength and serviceability demands throughout the lifecycle of a building.
Buy Documents
ASTM E72-22 - Standard Test Methods of Conducting Strength Tests of Panels for Building Construction
REDLINE ASTM E72-22 - Standard Test Methods of Conducting Strength Tests of Panels for Building Construction
Get Certified
Connect with accredited certification bodies for this standard

ICC Evaluation Service
Building products evaluation and certification.

QAI Laboratories
Building and construction product testing and certification.

Aboma Certification B.V.
Specialized in construction, metal, and transport sectors.
Sponsored listings
Frequently Asked Questions
ASTM E72-22 is a standard published by ASTM International. Its full title is "Standard Test Methods of Conducting Strength Tests of Panels for Building Construction". This standard covers: SIGNIFICANCE AND USE 8.1 The procedures described are those that will test the behavior of segments of wall construction under conditions representative of those encountered in service. Performance criteria based on data from those procedures can ensure structural adequacy and service life. SCOPE 1.1 These test methods cover the following procedures for determining the structural properties of segments of wall, floor, and roof constructions: Section Test Specimens 3 Loading 4 Deformation Measurements 5 Reports 6 Precision and Accuracy 7 TESTING WALLS Significance and Use 8 Compressive Load 9 Tensile Load 10 Transverse Load—Specimen Horizontal 11 Transverse Load—Specimen Vertical 12 Concentrated Load 13 Impact Load—See Test Methods E695 and E661 Racking Load—Evaluation of Sheathing Materials on a Standard Wood Frame 14 Racking Load—Evaluation of Sheathing Materials (Wet) on a Standard Wood Frame 15 TESTING FLOORS Significance and Use 16 Transverse Load 17 Concentrated Load 18 Impact Load—See Test Methods E695 and E661 TESTING ROOFS Section Significance and Use 19 Transverse Load 20 Concentrated Load 21 APPENDIX Technical Interpretation Appendix X1 1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.3 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.4 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.
SIGNIFICANCE AND USE 8.1 The procedures described are those that will test the behavior of segments of wall construction under conditions representative of those encountered in service. Performance criteria based on data from those procedures can ensure structural adequacy and service life. SCOPE 1.1 These test methods cover the following procedures for determining the structural properties of segments of wall, floor, and roof constructions: Section Test Specimens 3 Loading 4 Deformation Measurements 5 Reports 6 Precision and Accuracy 7 TESTING WALLS Significance and Use 8 Compressive Load 9 Tensile Load 10 Transverse Load—Specimen Horizontal 11 Transverse Load—Specimen Vertical 12 Concentrated Load 13 Impact Load—See Test Methods E695 and E661 Racking Load—Evaluation of Sheathing Materials on a Standard Wood Frame 14 Racking Load—Evaluation of Sheathing Materials (Wet) on a Standard Wood Frame 15 TESTING FLOORS Significance and Use 16 Transverse Load 17 Concentrated Load 18 Impact Load—See Test Methods E695 and E661 TESTING ROOFS Section Significance and Use 19 Transverse Load 20 Concentrated Load 21 APPENDIX Technical Interpretation Appendix X1 1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.3 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.4 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.
ASTM E72-22 is classified under the following ICS (International Classification for Standards) categories: 91.060.10 - Walls. Partitions. Facades. The ICS classification helps identify the subject area and facilitates finding related standards.
ASTM E72-22 has the following relationships with other standards: It is inter standard links to ASTM D4442-20, ASTM E2309/E2309M-20, ASTM E2126-19, ASTM E564-06(2018), ASTM E575-05(2018), ASTM E2126-11(2018), ASTM D4442-16, ASTM D4442-15, ASTM E4-14, ASTM D2395-14, ASTM D2395-14e1, ASTM E564-06(2012), ASTM E2126-11, ASTM E575-05(2011), ASTM E2309/E2309M-05(2011)e1. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
ASTM E72-22 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
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: E72 − 22
Standard Test Methods of
Conducting Strength Tests of Panels for Building
Construction
This standard is issued under the fixed designation E72; 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.Asuperscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
INTRODUCTION
Sound engineering design of structures using existing or new materials requires accurate technical
data on the strength and rigidity of the basic elements employed in various construction systems. It is
the purpose of these test methods to provide a systematic basis for obtaining engineering data on
various construction elements and structural details of value to designers, builders, building officials,
and others interested in this field. The results should closely approximate the performance in actual
service.
1. Scope
Concentrated Load 21
APPENDIX
1.1 These test methods cover the following procedures for
Technical Interpretation Appendix X1
determining the structural properties of segments of wall, floor,
1.2 The values stated in inch-pound units are to be regarded
and roof constructions:
as standard. The values given in parentheses are mathematical
Section
conversions to SI units that are provided for information only
Test Specimens 3
and are not considered standard.
Loading 4
Deformation Measurements 5
1.3 This standard does not purport to address all of the
Reports 6
safety concerns, if any, associated with its use. It is the
Precision and Accuracy 7
TESTING WALLS responsibility of the user of this standard to establish appro-
Significance and Use 8
priate safety, health, and environmental practices and deter-
Compressive Load 9
mine the applicability of regulatory limitations prior to use.
Tensile Load 10
Transverse Load—Specimen Horizontal 11
1.4 This international standard was developed in accor-
Transverse Load—Specimen Vertical 12
dance with internationally recognized principles on standard-
Concentrated Load 13
ization established in the Decision on Principles for the
Impact Load—See Test Methods E695 and E661
Racking Load—Evaluation of Sheathing Materials 14
Development of International Standards, Guides and Recom-
on a Standard Wood Frame
mendations issued by the World Trade Organization Technical
Racking Load—Evaluation of Sheathing Materials (Wet) 15
Barriers to Trade (TBT) Committee.
on a Standard Wood Frame
TESTING FLOORS
Significance and Use 16
2. Referenced Documents
Transverse Load 17
Concentrated Load 18
2.1 ASTM Standards:
Impact Load—See Test Methods E695 and E661
D2395 TestMethodsforDensityandSpecificGravity(Rela-
TESTING ROOFS
tive Density) of Wood and Wood-Based Materials
Section
Significance and Use 19
D4442 Test Methods for Direct Moisture Content Measure-
Transverse Load 20
ment of Wood and Wood-Based Materials
D7438 Practice for Field Calibration and Application of
Hand-Held Moisture Meters
These test methods are under the jurisdiction of ASTM Committee E06 on
Performance of Buildings and are the direct responsibility of Subcommittee E06.11
on Horizontal and Vertical Structures/Structural Performance of Completed Struc-
tures. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Oct. 1, 2022. Published October 2022. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1947. Last previous edition approved in 2015 as E72 – 15. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/E0072-22. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
E72−22
E4 Practices for Force Calibration and Verification of Test- fabrication. This age requirement applies also to plastered and
ing Machines stuccoed constructions.
E73 Practice for Static Load Testing of Truss Assemblies
E564 Practice for Static Load Test for Shear Resistance of
4. Loading
Framed Walls for Buildings
4.1 Apparatus—The testing machine or load-measuring ap-
E575 Practice for Reporting Data from Structural Tests of
paratus shall comply with the requirements prescribed in
Building Constructions, Elements, Connections, and As-
Practices E4.
semblies
E661 Test Method for Performance of Wood and Wood-
4.2 Application of Load—Apply the load to all of the
Based Floor and Roof Sheathing Under Concentrated
specimens in any test in increments so chosen that a sufficient
Static and Impact Loads
number of readings will be obtained to determine definitely the
E695 Test Method of Measuring Relative Resistance of
load-deformation curve (see Section 6). Record the initial
Wall, Floor, and Roof Construction to Impact Loading
reading of the load and the reading of the deformation, either
E2126 Test Methods for Cyclic (Reversed) Load Test for
with no load on the specimen or under a small initial load.
Shear Resistance ofVertical Elements of the Lateral Force
Increase the load to the first increment and record the defor-
Resisting Systems for Buildings
mation. Unless otherwise specified, decrease the load to the
E2309/E2309M Practices for Verification of Displacement
initial load and record the set (sometimes designated “perma-
Measuring Systems and Devices Used in Material Testing
nent set”). Increase the load to two increments and record the
Machines
set, when it is released to the initial load. Follow this sequence
E2322 Test Method for Conducting Transverse and Concen-
of readings for three increments, four increments, and so forth,
trated Load Tests on Panels used in Floor and Roof
of load. When for each specimen the behavior of the specimen
Construction
under load indicates that the specimen might fail suddenly and
2.2 Other Document:
damage the deformation-measuring apparatus, remove this
NISTVoluntary Product Standard PS20 American Softwood
apparatus from the specimen and increase the load continu-
Lumber Standard
ously until the maximum load that can be applied to the
specimen is determined.
3. Test Specimens
4.3 Duration of Load Application—Except for racking tests,
3.1 Size—There shall be at least three specimens for each
after each increment of load is applied, maintain the load level
test.Specimensshallbeconstructedtorepresentsectionsofthe
as constant as possible for a period of 5 min (see Note 1).Take
wall, floor, or roof assembly. The specimens shall be represen-
deformation readings as soon as practical after load
tative as to material and workmanship and shall be of the
application, at the end of the 5 min period under constant load,
largest practical size to predict structural performance attri-
and immediately and at the end of the 5 min period after any
butes of the assembly. Unsymmetrical assemblies shall be
partial or complete load release. Plot initial and 5 min readings
tested in each axis for which the results may be different.
in the form of load-deformation curves. Maintain complete
3.2 Length or Height—The length or height of specimen for
load-deformation-time records throughout the test. If applica-
eachelementshallbechosentoconformtothelengthorheight
tion of a given load is required for a certain period, such as
of that element in actual use.
24 h, take deformation readings at the beginning, at intervals
3.3 Width—The width of specimen shall be chosen, insofar
during this period, and at the end of this period, to allow the
as possible, to include several of the principal load-carrying
satisfactory plotting of a time-deformation curve for the
members to ensure that the behavior under load will simulate
complete period.
that under service conditions. With the exception of specimens
for the racking load test, the nominal width of wall specimens
NOTE 1—Reasons for the 5 min application of constant-level increment
shall be 4 ft (1.2 m). The actual width of specimens shall be a loads are as follows:
(1) To permit the assembly to come to a substantial rest prior to taking
whole number multiplied by the spacing of the principal
the second set of readings (Depending on the method employed for
load-carrying members except for prefabricated panels, for
applying the test load, it may be necessary to continue, at a reduced rate,
which the actual width shall be the width of panel used. If the
the motion of the loading device in order to maintain the constant load
structural properties of a particular construction are to be
level during the 5 min period.)
compared with another construction, there should not be a
(2) Toprovidesufficienttimeformakingallobservations.(Longertime
intervals may be required under certain conditions.)
great difference in the actual widths of the specimens.
(3) To observe any time-dependent deformation or load redistribution,
3.4 Age—Constructions, such as concrete and masonry
or both, and to record accurately the load level when time-dependent
(brick, structural clay tile, concrete block) for which the
deformation starts, that is, at the divergence of the immediate and delayed
structural properties depend upon the age of the specimen, load-deformation curves. This load level may, under certain conditions,
have an important bearing on the design load.
shallbetestednotlessthan25daysnormorethan31daysafter
(4) To be able to stop the test, if this should be desirable, prior to total
failure, after initial failure has been anticipated as a result of the
observations.
(5) To assure uniformity in test performance and consistency in test
Available from National Institute of Standards and Technology (NIST), 100
Bureau Dr., Stop 1070, Gaithersburg, MD 20899-1070, http://www.nist.gov. results.
E72−22
5. Deformation Measurements representative of those encountered in service. Performance
criteria based on data from those procedures can ensure
5.1 Measure the deformations with sufficient precision to
structural adequacy and service life.
define the load-deformation relationship, and report at least to
the nearest 0.01 in. (0.25 mm). The deformation-measuring
9. Compressive Load
apparatus specified for any loading may be replaced by other
apparatus,providedthatitpermitsreadingsofdeformationthat
9.1 Test Specimens—Tests shall be made on three like
are equivalent in accuracy to those from the specified appara-
specimens, each having a height equal to the length of the
tus.
element and a nominal width of 4 ft (1.2 m) (see Section 3).
6. Reports
9.2 Apparatus—The apparatus shall be assembled as shown
6.1 Show the results of each of the tests graphically, as
in Fig. 2 and shall conform to the detailed requirements for
illustrated in Fig. 1. Plot loads as ordinates and the deforma-
component parts prescribed in 9.2.1 and 9.2.2, or the equiva-
tions as abscissas for all tests. There shall be at least three
lent.
specimens for each test, and the results for each test shall be
9.2.1 Compressometer—A bracket shall be attached to the
shown on the same graph. Show the points for deformation
specimen near the upper end, supporting a metal rod.Abracket
under load by open circles and those for set by solid circles.
shall also be attached to the specimen near its lower end,
Average the three values for either the deformation or the set
supporting a deflection—measuring device with the spindle up
and plot this average value in pencil on the graph. Draw a
and the gage length shall be recorded. The conical end of the
smooth curve among the average points to show the average
rod shall seat in a hole in the end of the spindle and the rod and
behavior of the construction. The load-deformation curves
spindle shall be held in contact by stretched rubber bands. The
shall be continuous lines and the load-set curves shall be
deflection—measuring device shall be graduated to 0.001 in.
dashed lines. Although the particular specimen for each point
(0.025 mm) or less.
on the graph is not designated, record it on the laboratory data
9.2.2 Deflectometer—A fine wire shall be attached to a
sheets. If readings are obtained under greater loads for some
clamp near the upper end of the specimen. The free end
specimens than for others, plot all the values, but draw the
connected to stretched rubber bands shall be attached to a
curves only to the average values for which there are three
clamp near the lower end of the specimen. A mirror having a
values.
paper scale one-half the width of the mirror shall be attached
6.2 PreparethetestreportinaccordancewithPracticeE575.
horizontally to the edge of the specimen at mid-height. The
scale shall be graduated to 0.1 in. (2.5 mm) or less.
7. Precision and Bias
7.1 No statement is made either on the precision or on the
9.3 Procedure:
bias of these test methods due to the variety of materials and
9.3.1 Loading—Test the specimen as a column having a flat
combinations of materials involved.
end at the bottom (Fig. 2). Apply compressive loads to a steel
plate covering the upper end of the specimen. Apply the load
TESTING WALLS
uniformly along a line parallel to the inside face, and one-third
8. Significance and Use
the thickness of the specimen from the inside face. For wood
construction, a rate of loading corresponding to a movement of
8.1 The procedures described are those that will test the
the testing machine crosshead of nominally 0.03 in./min
behavior of segments of wall construction under conditions
(0.8 mm⁄min) has been found satisfactory.
9.3.2 Load-Deformation Data—Attach four compressom-
eters to the faces of the specimen, one near each corner of the
specimen as shown in Fig. 2, to measure the shortening of the
specimen. Record the readings to the nearest 0.001 in.
(0.025 mm).
9.3.3 Lateral Deflection—Attach two deflectometers, one to
each edge of the specimen, as shown in Fig. 2. Record the
readings, when the image of the wire coincides with the wire,
to the nearest 0.01 in. (0.25 mm).
9.4 Calculations and Report:
9.4.1 Deformation—For each compressometer, calculate the
shortening under each load as the difference between the
readingofthecompressometerwhentheloadisappliedandthe
initial reading. Calculate the shortening of the specimen as the
average of the shortenings for each of the four compressom-
eters multiplied by the ratio: specimen length divided by the
compressometer gage length. Obtain the sets in a similar
FIG. 1 Typical Graph Showing Results manner.
E72−22
FIG. 2 Compressive Load Test on Wall Specimen
9.4.2 Lateral Deflection—Calculate the lateral deflection of the fixtures or the fastenings, not of the wall construction.
andthelateralsetundereachloadforeachdeflectometerasthe When the failure occurs in fastenings, the tensile load indicates
difference between the reading of the deflectometer when the the maximum tensile strength of the construction that can be
load is applied and the initial reading. Calculate the lateral
realized in actual service unless improved fastenings are
deflection and lateral set for the specimen as the average of the provided.
lateral deflection and lateral set of the two deflectometers.
10.3.1.1 Masonry Constructions—The construction may be
9.4.3 Data Presentation—Record the maximum load for
continued upward beyond the top of the specimen and down-
each specimen and report the results of load-deformation and
ward below the bottom of the specimen to enclose attachments
load-deflection measurements in the form of a graph in
for the pulling fixtures.
accordance with Section 6. Report gage lengths of all deflec-
10.3.1.2 Framed Wall Constructions—If the construction
tion or deformation gages.
has studs (either of wood or metal) the studs may be extended
upward and downward beyond the top and bottom of the
10. Tensile Load
specimen and attached to the pulling fixtures. If the framed
10.1 Test Specimens—Tests shall be made on three like
wall has plates at the top and the bottom, attach the pulling
specimens, each having a height equal to the length of the
fixtures to the plates in the specimen.
element and a nominal width of 4 ft (1.2 m) (see Section 3).
10.3.2 Load-Deformation Data—Attach four extensometers
10.2 Apparatus—The apparatus preferably shall be as-
to the faces of the specimen, one near each corner, as shown in
sembled in a vertical testing machine and shall conform to the
Fig. 2, to measure the stretch of the specimen. Record the
detailed requirements for component parts prescribed in 9.2.1
readings to the nearest 0.001 in. (0.025 mm).
and 9.2.2, or the equivalent, with the exception that the
10.3.3 Lateral Deflection—Attach two deflectometers, one
compressometers prescribed in 9.2.1 shall be replaced by
to each edge of the specimen, as shown in Fig. 2. Record the
extensometers which shall be like the compressometers but so
readings, when the image of the wire coincides with the wire,
adjusted before load is applied that the stretch of the specimen
to the nearest 0.01 in. (0.25 mm). Lateral deflection (if any)
can be measured.
may be caused by nonaxial loading of the specimen.
10.3 Procedure:
10.4 Calculations and Report—For tensile loads, the calcu-
10.3.1 Loading—Test the specimen as a tension specimen
lations and report shall be similar to those required for
by uniform application of tensile forces along the line of the
compressive loads (see 9.4).
fastenings at the top and the bottom of the wall in a building.
The top and bottom pulling fixtures may be attached to the
11. Transverse Load—Specimen Horizontal
specimen by fastenings similar to those used in a building,
provided that, under the maximum load, failure of the speci- 11.1 Test Specimens—Tests shall be made on three like
men occurs between the top and the bottom of the specimen, specimens on symmetrical assemblies and six like specimens
not in either the pulling fixtures or the fastenings. If, under the onunsymmetricalassemblies,eachhavingalengthequaltothe
tensile load, failure occurs either in a pulling fixture or in a length of the element and a nominal width of 4 ft (1.2 m) (see
fastening, the results of the test determine only the properties Section 3).
E72−22
11.2 Apparatus—The apparatus shall be assembled as loads applied at the quarter-points of the span.Transverse load,
shown in Fig. 3 and shall conform to the detailed requirements uniformly distributed, may be applied by air pressure, either in
for component parts prescribed in 11.2.1 – 11.2.3,orthe abagorinachamberhavingthespecimenasoneface.Support
equivalent. specimens tested under uniform loading by rollers as for
11.2.1 Supports—Two steel rollers with a steel plate be- quarter-point loading.
tween each supporting roller and the specimen. 11.3.1.2 The bag method of loading is shown schematically
11.2.2 Loading Assembly—Two steel rollers with a steel in Fig. 4. Connect a reaction platform parallel to the face to be
plate between each loading roller and the specimen. loaded and wider than the specimen to the supports by tie rods.
11.2.3 Deflection Gage—A frame shall be placed on the Place an airtight bag of rubberized cloth as wide as the
upper face of the specimen. To prevent stresses deforming the specimenandaslongasthespanbetweenthespecimenandthe
frame as the specimen deforms under load, this frame shall rest reaction platform. Apply transverse load to the specimen by
onthreehardenedsteelballseachsupportedbyasteelblockon increasing the air pressure in the bag. Measure the pressure by
the face of the specimen. Two of the balls shall be placed in a means of a manometer. Water is usually the liquid in the
line vertically above one support and the third ball vertically manometer, but the specific gravity of the liquid shall be such
above the other support. Two deflection—measuring devices, that the error in pressure readings does not exceed 1 %.
one near each longitudinal edge of the specimen, shall be 11.3.1.3 When the chamber method of loading is used with
attached to the frame at midspan.The spindles shall rest on the the specimen horizontal, place the specimen near the floor,
upper face of the specimen. The devices shall be graduated to which should be practically airtight. An airtight frame or curb
0.001 in. (0.025 mm) or less. shallsurroundthespecimencloselyandbeaboutflushwiththe
upper surface of the specimen. A rubber blanket covers the
11.3 Procedure:
specimen, overlaps the frame, and is sealed so that it is
11.3.1 Loading—Use “two-point” loading for transverse
reasonably airtight. Use a small vacuum pump or positive
load tests. Test the specimen as a simple beam (Fig. 3)ona
action exhaust blower to reduce air pressure between the
span approximately 6 in. (150 mm) less than the specimen
specimen and floor. Measure the difference in pressure above
length.Applytwoequalloads,eachatadistanceofonequarter
and below the specimen by means of a manometer.
of the span from the supports, toward the middle of the span.
11.3.2 Strength on Short Span—The transverse strength of
For wall specimens tested horizontally (Fig. 3), the load on the
any construction increases as the span is shortened. If the
specimen shall include the weight of specimen between the
strength of the construction for a shorter span is desired, do not
supports. Apply the transverse loads to the outside face for
compute it, but test the construction on the short span.
three of the specimens and to the inside face for three of the
specimens. For symmetrical assemblies, test only three speci- 11.4 Calculations and Report:
mens. 11.4.1 Load-Deflection Data—For each micrometer, calcu-
11.3.1.1 Uniformly distributed loading may be used instead late the deflection under a given load as the difference between
of quarter-point loading, if a satisfactory method is available. the reading to the nearest division of the micrometer when the
The transverse strength for any span may be greater for some load is applied and the initial reading. Calculate the deflection
constructions under uniformly distributed load than under of the specimen for the span as the average of the deflections
FIG. 3 Transverse Load Test on Wall Specimen
E72−22
FIG. 4 Apparatus for Uniformly Distributed Transverse Load (Bag Method)
obtained from each of the two micrometers. Calculate the sets 12.3.2 Thebagmethodofloadingisshownschematicallyin
under the initial load by using a similar method. Record the Fig. 4. Connect a reaction platform parallel to the face to be
maximum load for each specimen. loaded and wider than the specimen to the supports by tie rods.
11.4.2 Data Presentation—Report the results in the form of
Placeanairtightbagaswideasthespecimenandaslongasthe
a graph in accordance with Section 6. span between the specimen and the reaction platform. Apply
transverse load to the specimen by increasing the air pressure
12. Transverse Load—Specimen Vertical
in the bag. Measure the pressure by means of a manometer or
12.1 Test Specimens—Tests shall be made on three like other pressure measuring device. The error of the pressure
specimens on symmetrical assemblies and six like specimens
reading shall not exceed 1 %.
on unsymmetrical assemblies each having a length equal to the
12.3.3 When the Chamber Method of loading is used with
length of the element and a nominal width of 4 ft (1.2 m) (see
the specimen vertical, the specimen forms one face of an
Section 3).
airtight chamber from which the air is exhausted. If all four
12.2 Apparatus—The apparatus shall be assembled as edges of the specimen bear on the chamber, this loading
determines the strength of the specimen as a plate supported at
shown in Fig. 3 and shall conform to the requirements for
component parts prescribed in 12.2.1 – 12.2.5, or the equiva- the four edges, not the transverse strength as defined in these
lent. methods.
12.2.1 Steel Channel.
12.3.4 If a specimen tested by the chamber method, either
12.2.2 Rollers—Cylindrical rollers, two supporting rollers,
horizontally or vertically, has an airtight cavity, vent each
two loading rollers.
cavity to the low-pressure face by a hole in the face of the
12.2.3 Screw Jack.
specimen not less than 0.2 in. (5 mm) in diameter, located
12.2.4 Ring Dynamometer.
where it will least affect the transverse strength of the speci-
12.2.5 Deflectometers—Two taut-wire mirror-scale deflec-
men.
tometers similar to those described in 9.2.2.
12.4 Calculations and Report—Calculate the results of test
12.3 Procedure—Transverse loads cannot be applied satis-
and report as described in 11.4, and report deflectometer
factorily to some wall constructions, such as masonry, with the
readings to the nearest 0.01 in. (0.25 mm).
specimen in a horizontal position. For such constructions,
apply the loads with the specimen in a vertical position, as
13. Concentrated Load
shown in Fig. 3, thus simulating service conditions. The
specimen, on a steel channel, shall rest on cylindrical rollers to 13.1 Test Specimens—Concentrated load tests shall be made
prevent restrained end conditions. The axes of the rollers shall
on each transverse specimen after the transverse load tests, the
be parallel to the faces of the specimen. The two supporting concentrated load being applied to the same face to which the
rollers shall be in contact with the vertical surface of the frame
transverse load was applied.
and each roller shall rest horizontally on sponge rubber about
13.2 Apparatus—The apparatus shall be assembled as
0.4 in. (10 mm) thick to prevent longitudinal restraint. Each of
shown in Fig. 5 and shall conform to the requirements for
the two loading rollers shall also rest on sponge rubber.Apply
component parts prescribed in 13.2.1 – 13.2.3, or the equiva-
the loads horizontally by a screw jack and measure by a ring
lent.
dynamometer between the jack and the specimen. The error in
13.2.1 Steel Bar—Steel bar having a diameter of 1 in.
the load indicated by the dynamometer shall not exceed 1 %.
(25.4 mm) and the edge of the face contacting the specimen
Attach two taut-wire mirror-scale deflectometers to the
rounded to a radius of 0.05 in. (1.3 mm).
specimen, one to each vertical edge.
13.2.2 Depth Gage—The depth gage shall consist of a
12.3.1 Applythetransverseloadtotheoutsidefaceforthree
of the specimens, and to the inside face for three of the deflection—measuring device graduated to 0.001 in.
specimens. For symmetrical assemblies, test only three speci- (0.025 mm) or less mounted on a three-legged support. The
mens. support shall be notched to permit placing the device directly
E72−22
construction. Since a standard frame is employed, the relative
performance of the sheathing is the test objective.
14.1.1 This test is conducted with standardized framing,
loading procedures, and method of measuring deflection, as
detailed in the method to ensure reproducibility. Provision is
made for following the sheathing manufacturers’ recommen-
dations for attaching the sheathing to the frame, and for
reporting the behavior of the specimen over its entire range of
use.
14.1.2 In applying the results, due allowance shall be made
for any variation in construction details or test conditions from
those in actual service.
14.2 Test Specimens:
14.2.1 Size and Number—The test specimen shall be 8 ft by
8 ft (2.4 m by 2.4 m) and the framing shall be constructed as
FIG. 5 Concentrated Load Test
shown in Fig. 6 and a minimum of three panels of each
construction shall be tested.
14.2.2 Framing—Frames shall be newly constructed for
adjacent to the bar and shall be long enough to permit placing
each test.All individual framing members shall be continuous.
the supporting legs on undisturbed areas of the face of the
14.2.2.1 Sheathing Material Evaluation—The frame shall
specimen.
be constructed as nearly like the frames shown in Fig. 6 as
13.2.3 Loading Device—Any convenient means for apply-
possible. No. 1 Douglas-fir Larch or Southern Pine lumber
ing a compressive load up to 1100 lbf (5 kN) and means for
conforming to NISTVoluntary Product Standard PS20 shall be
measuring the load within 1 %.
used.The stud spacing and size of the stud at the vertical panel
joint shall be permitted to vary as necessary to reflect the
13.3 Procedure:
manufacturer’sspecifiedtestconditionorstandardizedrequire-
13.3.1 Loading—Place the entire specimen or portion of the
ments. Any deviations from the framing scheme depicted in
specimen on a horizontal support and properly level. Place the
Fig. 6 shall be reported.
steel bar on the face of the specimen at what is judged to be the
weakest place and, also, at what is judged to be the strongest
NOTE 3—A common situation where the 14.2.2.1 framing provisions
place.Applyaloadverticallydownwardtotheuppersurfaceof
apply would be for product qualification and evaluation of sheathing
thebar.Continueloadinguntilmaximumloador1000lbf(4.45 products where design values have already been established. In those
instances, the sheathing performance and variation is the primary interest.
kN) is attained.
13.3.2 Depth of Indentation—Measure the depth of
14.2.2.2 Sheathing and Sheathing-to-Framing Attachment
indentation,bymeansofthedepthgage,andrecordthereading
Desi
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM 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: E72 − 15 E72 − 22
Standard Test Methods of
Conducting Strength Tests of Panels for Building
Construction
This standard is issued under the fixed designation E72; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
INTRODUCTION
Sound engineering design of structures using existing or new materials requires accurate technical
data on the strength and rigidity of the basic elements employed in various construction systems. It is
the purpose of these test methods to provide a systematic basis for obtaining engineering data on
various construction elements and structural details of value to designers, builders, building officials,
and others interested in this field. The results should closely approximate the performance in actual
service.
1. Scope
1.1 These test methods cover the following procedures for determining the structural properties of segments of wall, floor, and roof
constructions:
Section
Test Specimens 3
Loading 4
Deformation Measurements 5
Reports 6
Precision and Accuracy 7
TESTING WALLS
Significance and Use 8
Compressive Load 9
Tensile Load 10
Transverse Load—Specimen Horizontal 11
Transverse Load—Specimen Vertical 12
Concentrated Load 13
Impact Load—See Test Methods E695 and E661
Racking Load—Evaluation of Sheathing Materials 14
on a Standard Wood Frame
Racking Load—Evaluation of Sheathing Materials (Wet) 15
on a Standard Wood Frame
TESTING FLOORS
Significance and Use 16
Transverse Load 17
Concentrated Load 18
Impact Load—See Test Methods E695 and E661
TESTING ROOFS
These test methods are under the jurisdiction of ASTM Committee E06 on Performance of Buildings and are the direct responsibility of Subcommittee E06.11 on
Horizontal and Vertical Structures/Structural Performance of Completed Structures.
Current edition approved May 1, 2015Oct. 1, 2022. Published May 2015October 2022. Originally approved in 1947. Last previous edition approved in 20142015 as
E72 – 14a.E72 – 15. DOI: 10.1520/E0072-15.10.1520/E0072-22.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
E72 − 22
Section
Significance and Use 19
Transverse Load 20
Concentrated Load 21
APPENDIX
Technical Interpretation Appendix X1
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only and are not considered standard.
1.2.1 Exception—SI units are used in Fig. 6.
1.3 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, health, and environmental practices and determine the applicability of
regulatory limitations prior to use.
1.4 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.
2. Referenced Documents
2.1 ASTM Standards:
D2395 Test Methods for Density and Specific Gravity (Relative Density) of Wood and Wood-Based Materials
D4442 Test Methods for Direct Moisture Content Measurement of Wood and Wood-Based Materials
D7438 Practice for Field Calibration and Application of Hand-Held Moisture Meters
E4 Practices for Force Calibration and Verification of Testing Machines
E73 Practice for Static Load Testing of Truss Assemblies
E564 Practice for Static Load Test for Shear Resistance of Framed Walls for Buildings
E575 Practice for Reporting Data from Structural Tests of Building Constructions, Elements, Connections, and Assemblies
E661 Test Method for Performance of Wood and Wood-Based Floor and Roof Sheathing Under Concentrated Static and Impact
Loads
E695 Test Method of Measuring Relative Resistance of Wall, Floor, and Roof Construction to Impact Loading
E2126 Test Methods for Cyclic (Reversed) Load Test for Shear Resistance of Vertical Elements of the Lateral Force Resisting
Systems for Buildings
E2309/E2309M Practices for Verification of Displacement Measuring Systems and Devices Used in Material Testing Machines
E2322 Test Method for Conducting Transverse and Concentrated Load Tests on Panels used in Floor and Roof Construction
2.2 Other Document:
NIST Voluntary Product Standard PS20 American Softwood Lumber Standard
3. Test Specimens
3.1 Size—There shall be at least three specimens for each test. Specimens shall be constructed to represent sections of the wall,
floor, or roof assembly. The specimens shall be representative as to material and workmanship and shall be of the largest practical
size to predict structural performance attributes of the assembly. Unsymmetrical assemblies shall be tested in each axis for which
the results may be different.
3.2 Length or Height—The length or height of specimen for each element shall be chosen to conform to the length or height of
that element in actual use.
3.3 Width—The width of specimen shall be chosen, insofar as possible, to include several of the principal load-carrying members
to ensure that the behavior under load will simulate that under service conditions. With the exception of specimens for the racking
load test, the nominal width of wall specimens shall be 4 ft (1.2 m). The actual width of specimens shall be a whole number
multiplied by the spacing of the principal load-carrying members except for prefabricated panels, for which the actual width shall
be the width of panel used. If the structural properties of a particular construction are to be compared with another construction,
there should not be a great difference in the actual widths of the specimens.
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’sstandard’s Document Summary page on the ASTM website.
Available from National Institute of Standards and Technology (NIST), 100 Bureau Dr., Stop 1070, Gaithersburg, MD 20899-1070, http://www.nist.gov.
E72 − 22
3.4 Age—Constructions, such as concrete and masonry (brick, structural clay tile, concrete block) for which the structural
properties depend upon the age of the specimen, shall be tested not less than 25 days nor more than 31 days after fabrication. This
age requirement applies also to plastered and stuccoed constructions.
4. Loading
4.1 Apparatus—The testing machine or load-measuring apparatus shall comply with the requirements prescribed in Practices E4.
4.2 Application of Load—Apply the load to all of the specimens in any test in increments so chosen that a sufficient number of
readings will be obtained to determine definitely the load-deformation curve (see Section 6). Record the initial reading of the load
and the reading of the deformation, either with no load on the specimen or under a small initial load. Increase the load to the first
increment and record the deformation. Unless otherwise specified, decrease the load to the initial load and record the set
(sometimes designated “permanent set”). Increase the load to two increments and record the set, when it is released to the initial
load. Follow this sequence of readings for three increments, four increments, and so forth, of load. When for each specimen the
behavior of the specimen under load indicates that the specimen might fail suddenly and damage the deformation-measuring
apparatus, remove this apparatus from the specimen and increase the load continuously until the maximum load that can be applied
to the specimen is determined.
4.3 Duration of Load Application—Except for racking tests, after each increment of load is applied, maintain the load level as
constant as possible for a period of 5 min (see Note 1). Take deformation readings as soon as practical after load application, at
the end of the 5-min5 min period under constant load, and immediately and at the end of the 5-min5 min period after any partial
or complete load release. Plot initial and 5-min5 min readings in the form of load-deformation curves. Maintain complete
load-deformation-time records throughout the test. If application of a given load is required for a certain period, such as 24 h, 24 h,
take deformation readings at the beginning, at intervals during this period, and at the end of this period, to allow the satisfactory
plotting of a time-deformation curve for the complete period.
NOTE 1—Reasons for the 5-min5 min application of constant-level increment loads are as follows:
(1) To permit the assembly to come to a substantial rest prior to taking the second set of readings (Depending on the method employed for applying
the test load, it may be necessary to continue, at a reduced rate, the motion of the loading device in order to maintain the constant load level during the
5-min period.)
(1) To permit the assembly to come to a substantial rest prior to taking the second set of readings (Depending on the method employed for applying
the test load, it may be necessary to continue, at a reduced rate, the motion of the loading device in order to maintain the constant load level during the
5 min period.)
(2) To provide sufficient time for making all observations. (Longer time intervals may be required under certain conditions.)
(3) To observe any time-dependent deformation or load redistribution, or both, and to record accurately the load level when time-dependent
deformation starts, that is, at the divergence of the immediate and delayed load-deformation curves. This load level may, under certain conditions, have
an important bearing on the design load.
(4) To be able to stop the test, if this should be desirable, prior to total failure, after initial failure has been anticipated as a result of the observations.
(5) To assure uniformity in test performance and consistency in test results.
(2) To provide sufficient time for making all observations. (Longer time intervals may be required under certain conditions.)
(3) To observe any time-dependent deformation or load redistribution, or both, and to record accurately the load level when time-dependent
deformation starts, that is, at the divergence of the immediate and delayed load-deformation curves. This load level may, under certain conditions, have
an important bearing on the design load.
(4) To be able to stop the test, if this should be desirable, prior to total failure, after initial failure has been anticipated as a result of the observations.
(5) To assure uniformity in test performance and consistency in test results.
5. Deformation Measurements
5.1 Measure the deformations with sufficient precision to define the load-deformation relationship, and report at least to the nearest
0.01 in. (0.25 mm). The deformation-measuring apparatus specified for any loading may be replaced by other apparatus, provided
that it permits readings of deformation that are equivalent in accuracy to those from the specified apparatus.
6. Reports
6.1 Show the results of each of the tests graphically, as illustrated in Fig. 1. Plot loads as ordinates and the deformations as
abscissas for all tests. There shall be at least three specimens for each test, and the results for each test shall be shown on the same
graph. Show the points for deformation under load by open circles and those for set by solid circles. Average the three values for
either the deformation or the set and plot this average value in pencil on the graph. Draw a smooth curve among the average points
to show the average behavior of the construction. The load-deformation curves shall be continuous lines and the load-set curves
E72 − 22
FIG. 1 Typical Graph Showing Results
shall be dashed lines. Although the particular specimen for each point on the graph is not designated, record it on the laboratory
data sheets. If readings are obtained under greater loads for some specimens than for others, plot all the values, but draw the curves
only to the average values for which there are three values.
6.2 Prepare the test report in accordance with Practice E575.
7. Precision and Bias
7.1 No statement is made either on the precision or on the bias of these test methods due to the variety of materials and
combinations of materials involved.
TESTING WALLS
8. Significance and Use
8.1 The procedures described are those that will test the behavior of segments of wall construction under conditions representative
of those encountered in service. Performance criteria based on data from those procedures can ensure structural adequacy and
service life.
9. Compressive Load
9.1 Test Specimens—Tests shall be made on three like specimens, each having a height equal to the length of the element and a
nominal width of 4 ft (1.2 m) (see Section 3).
9.2 Apparatus—The apparatus shall be assembled as shown in Fig. 2 and shall conform to the detailed requirements for component
parts prescribed in 9.2.1 and 9.2.2, or the equivalent.
9.2.1 Compressometer—A bracket shall be attached to the specimen near the upper end, supporting a metal rod. A bracket shall
also be attached to the specimen near its lower end, supporting a deflection—measuring device with the spindle up and the gage
length shall be recorded. The conical end of the rod shall seat in a hole in the end of the spindle and the rod and spindle shall be
held in contact by stretched rubber bands. The deflection—measuring device shall be graduated to 0.001 in. (0.025 mm) or less.
9.2.2 Deflectometer—A fine wire shall be attached to a clamp near the upper end of the specimen. The free end connected to
stretched rubber bands shall be attached to a clamp near the lower end of the specimen. A mirror having a paper scale one-half
the width of the mirror shall be attached horizontally to the edge of the specimen at midheight.mid-height. The scale shall be
graduated to 0.1 in. (2.5 mm) or less.
E72 − 22
FIG. 2 Compressive Load Test on Wall Specimen
9.3 Procedure:
9.3.1 Loading—Test the specimen as a column having a flat end at the bottom (Fig. 2). Apply compressive loads to a steel plate
covering the upper end of the specimen. Apply the load uniformly along a line parallel to the inside face, and one-third the
thickness of the specimen from the inside face. For wood construction, a rate of loading corresponding to a movement of the testing
machine crosshead of nominally 0.03 in./min (0.8(0.8 mm mm/min) ⁄min) has been found satisfactory.
9.3.2 Load-Deformation Data—Attach four compressometers to the faces of the specimen, one near each corner of the specimen
as shown in Fig. 2, to measure the shortening of the specimen. Record the readings to the nearest 0.001 in. (0.025 mm).(0.025 mm).
9.3.3 Lateral Deflection—Attach two deflectometers, one to each edge of the specimen, as shown in Fig. 2. Record the readings,
when the image of the wire coincides with the wire, to the nearest 0.01 in. (0.25 mm).
9.4 Calculations and Report:
9.4.1 Deformation—For each compressometer, calculate the shortening under each load as the difference between the reading of
the compressometer when the load is applied and the initial reading. Calculate the shortening of the specimen as the average of
the shortenings for each of the four compressometers multiplied by the ratio: specimen length divided by the compressometer gage
length. Obtain the sets in a similar manner.
E72 − 22
9.4.2 Lateral Deflection—Calculate the lateral deflection and the lateral set under each load for each deflectometer as the
difference between the reading of the deflectometer when the load is applied and the initial reading. Calculate the lateral deflection
and lateral set for the specimen as the average of the lateral deflection and lateral set of the two deflectometers.
9.4.3 Data Presentation—Record the maximum load for each specimen and report the results of load-deformation and
load-deflection measurements in the form of a graph in accordance with Section 6. Report gage lengths of all deflection or
deformation gages.
10. Tensile Load
10.1 Test Specimens—Tests shall be made on three like specimens, each having a height equal to the length of the element and
a nominal width of 4 ft (1.2 m) (see Section 3).
10.2 Apparatus—The apparatus preferably shall be assembled in a vertical testing machine and shall conform to the detailed
requirements for component parts prescribed in 9.2.1 and 9.2.2, or the equivalent, with the exception that the compressometers
prescribed in 9.2.1 shall be replaced by extensometers which shall be like the compressometers but so adjusted before load is
applied that the stretch of the specimen can be measured.
10.3 Procedure:
10.3.1 Loading—Test the specimen as a tension specimen by uniform application of tensile forces along the line of the fastenings
at the top and the bottom of the wall in a building. The top and bottom pulling fixtures may be attached to the specimen by
fastenings similar to those used in a building, provided that, under the maximum load, failure of the specimen occurs between the
top and the bottom of the specimen, not in either the pulling fixtures or the fastenings. If, under the tensile load, failure occurs either
in a pulling fixture or in a fastening, the results of the test determine only the properties of the fixtures or the fastenings, not of
the wall construction. When the failure occurs in fastenings, the tensile load indicates the maximum tensile strength of the
construction that can be realized in actual service unless improved fastenings are provided.
10.3.1.1 Masonry Constructions—The construction may be continued upward beyond the top of the specimen and downward
below the bottom of the specimen to enclose attachments for the pulling fixtures.
10.3.1.2 Framed Wall Constructions—If the construction has studs (either of wood or metal) the studs may be extended upward
and downward beyond the top and bottom of the specimen and attached to the pulling fixtures. If the framed wall has plates at
the top and the bottom, attach the pulling fixtures to the plates in the specimen.
10.3.2 Load-Deformation Data—Attach four extensometers to the faces of the specimen, one near each corner, as shown in Fig.
2, to measure the stretch of the specimen. Record the readings to the nearest 0.001 in. (0.025 mm).
10.3.3 Lateral Deflection—Attach two deflectometers, one to each edge of the specimen, as shown in Fig. 2. Record the readings,
when the image of the wire coincides with the wire, to the nearest 0.01 in. (0.25 mm). Lateral deflection (if any) may be caused
by nonaxial loading of the specimen.
10.4 Calculations and Report—For tensile loads, the calculations and report shall be similar to those required for compressive
loads (see 9.4).
11. Transverse Load—Specimen Horizontal
11.1 Test Specimens—Tests shall be made on three like specimens on symmetrical assemblies and six like specimens on
unsymmetrical assemblies, each having a length equal to the length of the element and a nominal width of 4 ft (1.2 m) (see Section
3).
11.2 Apparatus—The apparatus shall be assembled as shown in Fig. 3 and shall conform to the detailed requirements for
component parts prescribed in 11.2.1 – 11.2.3, or the equivalent.
11.2.1 Supports—Two steel rollers with a steel plate between each supporting roller and the specimen.
E72 − 22
FIG. 3 Transverse Load Test on Wall Specimen
11.2.2 Loading Assembly—Two steel rollers with a steel plate between each loading roller and the specimen.
11.2.3 Deflection Gage—A frame shall be placed on the upper face of the specimen. To prevent stresses deforming the frame as
the specimen deforms under load, this frame shall rest on three hardened steel balls each supported by a steel block on the face
of the specimen. Two of the balls shall be placed in a line vertically above one support and the third ball vertically above the other
support. Two deflection—measuring devices, one near each longitudinal edge of the specimen, shall be attached to the frame at
midspan. The spindles shall rest on the upper face of the specimen. The devices shall be graduated to 0.001 in. (0.025 mm) or less.
11.3 Procedure:
11.3.1 Loading—Use “two-point” loading for transverse load tests. Test the specimen as a simple beam (Fig. 3) on a span
approximately 6 in. (150 mm) less than the specimen length. Apply two equal loads, each at a distance of one quarter of the span
from the supports, toward the middle of the span. For wall specimens tested horizontally (Fig. 3), the load on the specimen shall
include the weight of specimen between the supports. Apply the transverse loads to the outside face for three of the specimens and
to the inside face for three of the specimens. For symmetrical assemblies, test only three specimens.
11.3.1.1 Uniformly distributed loading may be used instead of quarter-point loading, if a satisfactory method is available. The
transverse strength for any span may be greater for some constructions under uniformly distributed load than under loads applied
at the quarter-points of the span. Transverse load, uniformly distributed, may be applied by air pressure, either in a bag or in a
chamber having the specimen as one face. Support specimens tested under uniform loading by rollers as for quarter-point loading.
11.3.1.2 The bag method of loading is shown schematically in Fig. 4. Connect a reaction platform parallel to the face to be loaded
and wider than the specimen to the supports by tie rods. Place an airtight bag of rubberized cloth as wide as the specimen and as
long as the span between the specimen and the reaction platform. Apply transverse load to the specimen by increasing the air
pressure in the bag. Measure the pressure by means of a manometer. Water is usually the liquid in the manometer, but the specific
gravity of the liquid shall be such that the error in pressure readings does not exceed 1 %.
11.3.1.3 When the chamber method of loading is used with the specimen horizontal, place the specimen near the floor, which
should be practically airtight. An airtight frame or curb shall surround the specimen closely and be about flush with the upper
surface of the specimen. A rubber blanket covers the specimen, overlaps the frame, and is sealed so that it is reasonably airtight.
Use a small vacuum pump or positive action exhaust blower to reduce air pressure between the specimen and floor. Measure the
difference in pressure above and below the specimen by means of a manometer.
11.3.2 Strength on Short Span—The transverse strength of any construction increases as the span is shortened. If the strength of
the construction for a shorter span is desired, do not compute it, but test the construction on the short span.
E72 − 22
FIG. 4 Apparatus for Uniformly Distributed Transverse Load (Bag Method)
11.4 Calculations and Report:
11.4.1 Load-Deflection Data—For each micrometer, calculate the deflection under a given load as the difference between the
reading to the nearest division of the micrometer when the load is applied and the initial reading. Calculate the deflection of the
specimen for the span as the average of the deflections obtained from each of the two micrometers. Calculate the sets under the
initial load by using a similar method. Record the maximum load for each specimen.
11.4.2 Data Presentation—Report the results in the form of a graph in accordance with Section 6.
12. Transverse Load—Specimen Vertical
12.1 Test Specimens—Tests shall be made on three like specimens on symmetrical assemblies and six like specimens on
unsymmetrical assemblies each having a length equal to the length of the element and a nominal width of 4 ft (1.2 m) (see Section
3).
12.2 Apparatus—The apparatus shall be assembled as shown in Fig. 3 and shall conform to the requirements for component parts
prescribed in 12.2.1 – 12.2.5, or the equivalent.
12.2.1 Steel Channel. Steel Channel.
12.2.2 Rollers—Cylindrical rollers, two supporting rollers, two loading rollers.
12.2.3 Screw Jack. Screw Jack.
12.2.4 Ring Dynamometer. Ring Dynamometer.
12.2.5 Deflectometers—Two taut-wire mirror-scale deflectometers similar to those described in 9.2.2.
12.3 Procedure—Transverse loads cannot be applied satisfactorily to some wall constructions, such as masonry, with the specimen
in a horizontal position. For such constructions, apply the loads with the specimen in a vertical position, as shown in Fig. 3, thus
simulating service conditions. The specimen, on a steel channel, shall rest on cylindrical rollers to prevent restrained end
conditions. The axes of the rollers shall be parallel to the faces of the specimen. The two supporting rollers shall be in contact with
the vertical surface of the frame and each roller shall rest horizontally on sponge rubber about 0.4 in. (10 mm) thick to prevent
longitudinal restraint. Each of the two loading rollers shall also rest on sponge rubber. Apply the loads horizontally by a screw jack
and measure by a ring dynamometer between the jack and the specimen. The error in the load indicated by the dynamometer shall
not exceed 1 %. Attach two taut-wire mirror-scale deflectometers to the specimen, one to each vertical edge.
12.3.1 Apply the transverse load to the outside face for three of the specimens, and to the inside face for three of the specimens.
For symmetrical assemblies, test only three specimens.
12.3.2 The bag method of loading is shown schematically in Fig. 4. Connect a reaction platform parallel to the face to be loaded
and wider than the specimen to the supports by tie rods. Place an airtight bag as wide as the specimen and as long as the span
E72 − 22
between the specimen and the reaction platform. Apply transverse load to the specimen by increasing the air pressure in the bag.
Measure the pressure by means of a manometer or other pressure measuring device. The error of the pressure reading shall not
exceed 1 %.
12.3.3 When the Chamber Method of loading is used with the specimen vertical, the specimen forms one face of an airtight
chamber from which the air is exhausted. If all four edges of the specimen bear on the chamber, this loading determines the strength
of the specimen as a plate supported at the four edges, not the transverse strength as defined in these methods.
12.3.4 If a specimen tested by the chamber method, either horizontally or vertically, has an airtight cavity, vent each cavity to the
low-pressure face by a hole in the face of the specimen not less than 0.2 in. (5 mm) in diameter, located where it will least affect
the transverse strength of the specimen.
12.4 Calculations and Report—Calculate the results of test and report as described in 11.4, and report deflectometer readings to
the nearest 0.01 in. (0.25 mm).
13. Concentrated Load
13.1 Test Specimens—Concentrated load tests shall be made on each transverse specimen after the transverse load tests, the
concentrated load being applied to the same face to which the transverse load was applied.
13.2 Apparatus—The apparatus shall be assembled as shown in Fig. 5 and shall conform to the requirements for component parts
prescribed in 13.2.1 – 13.2.3, or the equivalent.
13.2.1 Steel Bar—Steel bar having a diameter of 1 in. (25.4 mm) (25.4 mm) and the edge of the face contacting the specimen
rounded to a radius of 0.05 in. (1.3 mm).
13.2.2 Depth Gage—The depth gage shall consist of a deflection—measuring device graduated to 0.001 in. (0.025 mm)
(0.025 mm) or less mounted on a three-legged support. The support shall be notched to permit placing the device directly adjacent
to the bar and shall be long enough to permit placing the supporting legs on undisturbed areas of the face of the specimen.
13.2.3 Loading Device—Any convenient means for applying a compressive load up to 1100 lbf (5 kN) and means for measuring
the load within 1 %.
13.3 Procedure:
13.3.1 Loading—Place the entire specimen or portion of the specimen on a horizontal support and properly level. Place the steel
bar on the face of the specimen at what is judged to be the weakest place and, also, at what is judged to be the strongest place.
Apply a load vertically downward to the upper surface of the bar. Continue loading until maximum load or 1000 lbf (4.45 kN)
is attained.
FIG. 5 Concentrated Load Test
E72 − 22
13.3.2 Depth of Indentation—Measure the depth of indentation, by means of the depth gage, and record the reading of the
micrometer to the nearest 0.001 in. (0.025 mm).
13.4 Calculations and Report:
13.4.1 Depth of Indentation—Calculate the depth of indentation (set) after a given load has been applied and the bar removed to
the nearest 0.001 in. (0.025 mm) as the difference between the depth for that load and the initial reading of the micrometer before
a load has been applied to the specimen.
13.4.2 Data Presentation—Report the results in the form of a graph in accordance with Section 6.
14. Racking Load—Evaluation of Sheathing Materials on a Standard Wood Frame
NOTE 2—These test methods have been used to evaluate design shear resistance of wall assemblies without the involvement of anchorage details. If the
test objective is to measure the performance of the complete wall, Practice E564 is recommended.
14.1 Scope—This test method measures the resistance of panels, having a wood frame, and sheathed with sheet materials such as
structural insulating board, plywood, gypsum board, transite, and so forth, to a racking load such as would be imposed by winds
blowing on a wall oriented at 90° to the panel. It is intended to provide a reliable, uniform procedure
...








Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.
Loading comments...