ASTM D7989-21

Standard Practice for Demonstrating Equivalent In-Plane Lateral Seismic Performance to Wood-Frame Shear Walls Sheathed with Wood Structural Panels

SIGNIFICANCE AND USE
5.1 This practice documents cyclic performance benchmarks for shear walls constructed with wood structural panel (WSP) sheathing attached to dimension lumber framing using common or galvanized box nails as defined in 3.2.8.  
5.2 Procedures described in this practice provide a method to evaluate an alternative shear wall system’s SEPs to demonstrate equivalent in-plane lateral seismic performance to the reference shear wall system.  
5.3 The procedures described in this practice do not address all factors to be considered for recognition of an alternative shear wall system. Such factors, as described in 1.4, vary by the end-use application and shall be addressed outside the scope of this standard through an evaluation of the acceptability of the alternative shear wall system in accordance with requirements of building codes and standards, as applicable.
SCOPE
1.1 This practice establishes a method for alternative shear wall systems to compare seismic equivalency parameters (SEP) derived from cyclic in-plane racking tests to performance targets derived from tests of light-frame shear walls constructed with wood structural panel (WSP) sheathing attached to dimension lumber framing using nails.  
1.2 This practice considers only the performance of shear walls subject to cyclic lateral loading, parallel to the plane of the shear wall. Design of walls with openings and performance for other wall functions, such as out-of-plane bending, combined shear and uplift, and so forth are not considered.  
1.3 This practice is applicable only to shear walls where all vertical-load-supporting elements are intact at the end of the in-plane lateral load test and remain capable of supporting gravity loads. Wall assemblies whose vertical-load-supporting elements buckle or otherwise become incapable of supporting gravity loads during the lateral load test are outside the scope of this practice. In addition, for bearing wall systems, this practice assumes that the shear wall system under evaluation has documented design procedures to ensure that vertical-load-supporting elements have adequate resistance to the combined effect of compression loads caused by overturning and gravity loads.  
1.4 This practice does not address height limitations, detailing requirements, wall openings, derivation of design values for strength and stiffness, or other requirements and limitations that may be necessary for an alternative shear wall system. These requirements shall be provided elsewhere, such as by a suitable product standard for the alternative shear wall system.  
1.5 This practice assumes that the stiffness or deformation of the alternative shear wall system can be estimated, and that design loads within a structure will be distributed among seismically equivalent wall systems based on their relative stiffness.  
1.6 This practice is not intended to preclude other rational means of evaluating seismic performance.  
1.7 This practice assumes that the alternative shear wall system may be used alone or in combination with wood-frame shear walls sheathed with wood structural panels.  
1.8 Units—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.  
1.9 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.  
1.10 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)...

General Information

• Status: Published
• Publication Date: 31-Oct-2021
• ICS: 79.060.01 - Wood-based panels in general
• ICS: 91.060.10 - Walls. Partitions. Facades
• Technical Committee: D07 - Wood
• Drafting Committee: D07.05 - Wood Assemblies

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: D7989 − 21
Standard Practice for
Demonstrating Equivalent In-Plane Lateral Seismic
Performance to Wood-Frame Shear Walls Sheathed with
1
Wood Structural Panels
This standard is issued under the fixed designation D7989; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 1.6 This practice is not intended to preclude other rational
means of evaluating seismic performance.
1.1 This practice establishes a method for alternative shear
wall systems to compare seismic equivalency parameters
1.7 This practice assumes that the alternative shear wall
(SEP) derived from cyclic in-plane racking tests to perfor- system may be used alone or in combination with wood-frame
mance targets derived from tests of light-frame shear walls
shear walls sheathed with wood structural panels.
constructed with wood structural panel (WSP) sheathing at-
1.8 Units—The values stated in inch-pound units are to be
tached to dimension lumber framing using nails.
regarded as standard. The values given in parentheses are
1.2 This practice considers only the performance of shear
mathematical conversions to SI units that are provided for
walls subject to cyclic lateral loading, parallel to the plane of
information only and are not considered standard.
the shear wall. Design of walls with openings and performance
1.9 This standard does not purport to address all of the
for other wall functions, such as out-of-plane bending, com-
safety concerns, if any, associated with its use. It is the
bined shear and uplift, and so forth are not considered.
responsibility of the user of this standard to establish appro-
1.3 This practice is applicable only to shear walls where all
priate safety, health, and environmental practices and deter-
vertical-load-supporting elements are intact at the end of the
mine the applicability of regulatory limitations prior to use.
in-plane lateral load test and remain capable of supporting
1.10 This international standard was developed in accor-
gravity loads. Wall assemblies whose vertical-load-supporting
dance with internationally recognized principles on standard-
elements buckle or otherwise become incapable of supporting
ization established in the Decision on Principles for the
gravity loads during the lateral load test are outside the scope
Development of International Standards, Guides and Recom-
of this practice. In addition, for bearing wall systems, this
mendations issued by the World Trade Organization Technical
practice assumes that the shear wall system under evaluation
Barriers to Trade (TBT) Committee.
has documented design procedures to ensure that vertical-load-
supporting elements have adequate resistance to the combined 2. Referenced Documents
effect of compression loads caused by overturning and gravity
2
2.1 ASTM Standards:
loads.
E2126 Test Methods for Cyclic (Reversed) Load Test for
1.4 This practice does not address height limitations, detail-
Shear Resistance ofVertical Elements of the Lateral Force
ing requirements, wall openings, derivation of design values
Resisting Systems for Buildings
for strength and stiffness, or other requirements and limitations
F1667 Specification for Driven Fasteners: Nails, Spikes, and
that may be necessary for an alternative shear wall system.
Staples
These requirements shall be provided elsewhere, such as by a
2.2 Other Documents:
suitable product standard for the alternative shear wall system.
PS1 Structural Plywood, U.S. Department of Commerce
3
1.5 This practice assumes that the stiffness or deformation
Voluntary Product Standard
of the alternative shear wall system can be estimated, and that
PS2 Performance Standard for Wood-Based Structural Use
design loads within a structure will be distributed among
seismically equivalent wall systems based on their relative
stiffness.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
1
This practice is under the jurisdiction ofASTM Committee D07 on Wood and Standards volume information, refer to the standard’s Document Summary page on
is the direct responsibility of Subcommittee D07.05 on Wood Assemblies. the ASTM website.
3
Current edition approved Nov. 1, 2021. Published December 2021. Originally Online, Available: https://www.nist.gov/system/files/documents/2019/12/16/
approved in 2015. Last previous edition approved in 2020 as D7989 – 20. DOI: PS%201
...

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: D7989 − 20 D7989 − 21
Standard Practice for
Demonstrating Equivalent In-Plane Lateral Seismic
Performance to Wood-Frame Shear Walls Sheathed with
1
Wood Structural Panels
This standard is issued under the fixed designation D7989; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This practice establishes a method for alternative shear wall systems to compare seismic equivalency parameters (SEP) derived
from cyclic in-plane racking tests to performance targets derived from tests of light-frame shear walls constructed with wood
structural panel (WSP) sheathing attached to dimension lumber framing using nails.
1.2 This practice considers only the performance of shear walls subject to cyclic lateral loading, parallel to the plane of the shear
wall. Design of walls with openings and performance for other wall functions, such as out-of-plane bending, combined shear and
uplift, and so forth are not considered.
1.3 This practice is applicable only to shear walls where all vertical-load-supporting elements are intact at the end of the in-plane
lateral load test and remain capable of supporting gravity loads. Wall assemblies whose vertical-load-supporting elements buckle
or otherwise become incapable of supporting gravity loads during the lateral load test are outside the scope of this practice. In
addition, for bearing wall systems, this practice assumes that the shear wall system under evaluation has documented design
procedures to ensure that vertical-load-supporting elements have adequate resistance to the combined effect of compression loads
caused by overturning and gravity loads.
1.4 This practice does not address height limitations, detailing requirements, wall openings, derivation of design values for
strength and stiffness, or other requirements and limitations that may be necessary for an alternative shear wall system. These
requirements shall be provided elsewhere, such as by a suitable product standard for the alternative shear wall system.
1.5 This practice assumes that the stiffness or deformation of the alternative shear wall system can be estimated, and that design
loads within a structure will be distributed among seismically equivalent wall systems based on their relative stiffness.
1.6 This practice is not intended to preclude other rational means of evaluating seismic performance.
1.7 This practice assumes that the alternative shear wall system may be used alone or in combination with wood-frame shear walls
sheathed with wood structural panels.
1.8 Units—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
This test method practice is under the jurisdiction of ASTM Committee D07 on Wood and is the direct responsibility of Subcommittee D07.05 on Wood Assemblies.
Current edition approved Nov. 1, 2020Nov. 1, 2021. Published December 2020December 2021. Originally approved in 2015. Last previous edition approved in 20182020
as D7989 – 18.20. DOI: 10.1520/D7989-20.10.1520/D7989-21.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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D7989 − 21
1.9 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of
the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory
limitations prior to use.
1.9 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.
1.10 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
2.1 ASTM Standards:
E2126 Test Methods for Cyclic (
...