ASTM A1044/A1044M-22a
(Specification)Standard Specification for Steel Stud Assemblies for Shear Reinforcement of Concrete
Standard Specification for Steel Stud Assemblies for Shear Reinforcement of Concrete
SCOPE
1.1 This specification covers steel stud assemblies for shear reinforcement of concrete. Stud assemblies consist of either single-headed studs (Type 1) attached to a structural steel base rail by structural welding or stud welding, or double-headed studs (Type 2) mechanically crimped into a non-structural steel shape or attached to a steel plate by spot welding or tack welding. These stud assemblies are not intended for use as shear connectors in steel-concrete composite construction.
Note 1: The configuration of the studs for stud assemblies is much different than the configuration of the headed-type studs prescribed in Clause 9, Figure 9.1 of AWS D1.1/D1.1M. Ratios of the cross-sectional areas of the head-to-shank of the AWS D1.1/D1.1M studs range from about 2.5 to 4. In contrast, this specification requires the area of the head of the studs for stud assemblies to be at least 10 times the area of the shank. Thus, the standard headed-type studs in Clause 9, Figure 9.1 of AWS D1.1/D1.1M do not conform to the requirements of this specification for use as stud assemblies for shear reinforcement.
1.2 This specification is applicable for orders in either inch-pound units or in SI units.
1.3 The values stated either in inch-pound or SI units are to be regarded as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with this specification.
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.
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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:A1044/A1044M −22a
Standard Specification for
Steel Stud Assemblies for Shear Reinforcement of
1
Concrete
This standard is issued under the fixed designation A1044/A1044M; 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* 2. Referenced Documents
2
2.1 ASTM Standards:
1.1 This specification covers steel stud assemblies for shear
A29/A29MSpecificationforGeneralRequirementsforSteel
reinforcement of concrete. Stud assemblies consist of either
Bars, Carbon and Alloy, Hot-Wrought
single-headed studs (Type 1) attached to a structural steel base
A36/A36MSpecification for Carbon Structural Steel
rail by structural welding or stud welding, or double-headed
A370Test Methods and Definitions for Mechanical Testing
studs(Type2)mechanicallycrimpedintoanon-structuralsteel
of Steel Products
shape or attached to a steel plate by spot welding or tack
A615/A615MSpecificationforDeformedandPlainCarbon-
welding. These stud assemblies are not intended for use as
Steel Bars for Concrete Reinforcement
shear connectors in steel-concrete composite construction.
A706/A706MSpecification for Deformed and Plain Low-
NOTE 1—The configuration of the studs for stud assemblies is much
Alloy Steel Bars for Concrete Reinforcement
different than the configuration of the headed-type studs prescribed in
3
Clause 9, Figure 9.1 of AWS D1.1/D1.1M. Ratios of the cross-sectional
2.2 AWS Standard:
areas of the head-to-shank of the AWS D1.1/D1.1M studs range from
AWS D1.1/D1.1M-2020Structural Welding Code—Steel
about 2.5 to 4. In contrast, this specification requires the area of the head
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2.3 U.S. Military Standards:
of the studs for stud assemblies to be at least 10 times the area of the
MIL-STD-129Marking for Shipment and Storage
shank. Thus, the standard headed-type studs in Clause 9, Figure 9.1 of
AWS D1.1/D1.1M do not conform to the requirements of this specifica-
MIL-STD-163SteelMillProductsPreparationforShipment
tion for use as stud assemblies for shear reinforcement.
and Storage
4
2.4 U.S. Federal Standard:
1.2 This specification is applicable for orders in either
Fed. Std. No. 123Marking for Shipment (Civil Agencies)
inch-pound units or in SI units.
1.3 The values stated either in inch-pound or SI units are to
3. Terminology
beregardedasstandard.Withinthetext,theSIunitsareshown
3.1 Definitions of Terms Specific to this Specification:
in brackets. The values stated in each system are not exact
3.1.1 base rail, n—the steel shape or plate that a group of
equivalents;therefore,eachsystemshallbeusedindependently
headed studs is attached to by welding or other means.
of the other. Combining values from the two systems may
3.1.1.1 Discussion—Stud assemblies comprised of single-
result in nonconformance with this specification.
headed studs (Type 1) require a base rail; the base rail acts as
1.4 This international standard was developed in accor-
a structural element to provide anchorage to the concrete. For
dance with internationally recognized principles on standard-
stud assemblies in which double-headed studs (Type 2) are
ization established in the Decision on Principles for the
mechanically crimped into a steel shape, for example, into a
Development of International Standards, Guides and Recom-
steelchannel,thebaserailisnotrequiredtoprovideanchorage
mendations issued by the World Trade Organization Technical
to the concrete; the purpose of the base rail is to hold the studs
Barriers to Trade (TBT) Committee.
2
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
1
This specification is under the jurisdiction ofASTM Committee A01 on Steel, Standards volume information, refer to the standard’s Document Summary page on
Stainless Steel and RelatedAlloys and is the direct responsibility of Subcommittee the ASTM website.
3
A01.05 on Steel Reinforcement. Available from American Welding Society (AWS), 8669 NW 36 St., #130,
Current edition approved Nov. 1, 2022. Published November 2022. Originally Miami, FL 33166-6672, http://www.aws.org.
4
approved in 2005. Last previous edition approved in 2022 as A1044/A1044M–22. Available from DLA Document Services, Building 4/D, 700 Robbins Ave.,
DOI: 10.1520/A1044_A1044M-22A. Philadelphia, PA 19111-5094, http://quicksearch.dla.mil.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C7
...
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: A1044/A1044M − 22 A1044/A1044M − 22a
Standard Specification for
Steel Stud Assemblies for Shear Reinforcement of
1
Concrete
This standard is issued under the fixed designation A1044/A1044M; 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 specification covers steel stud assemblies for shear reinforcement of concrete. Stud assemblies consist of either
single-headed studs (Type 1) attached to a structural steel base rail by structural welding or stud welding, or double-headed studs
(Type 2) mechanically crimped into a non-structural steel shape or attached to a steel plate by spot welding or tack welding. These
stud assemblies are not intended for use as shear connectors in steel-concrete composite construction.
NOTE 1—The configuration of the studs for stud assemblies is much different than the configuration of the headed-type studs prescribed in Section
7,Clause 9, Figure 7.19.1 of AWS D1.1/D1.1M. Ratios of the cross-sectional areas of the head-to-shank of the AWS D1.1/D1.1M studs range from about
2.5 to 4. In contrast, this specification requires the area of the head of the studs for stud assemblies to be at least 10 times the area of the shank. Thus,
the standard headed-type studs in Section 7,Clause 9, Figure 7.19.1 of AWS D1.1/D1.1M do not conform to the requirements of this specification for use
as stud assemblies for shear reinforcement.
1.2 This specification is applicable for orders in either inch-pound units or in SI units.
1.3 The values stated either in inch-pound or SI units are to be regarded as standard. Within the text, the SI units are shown in
brackets. The values stated in each system are not exact equivalents; therefore, each system mustshall be used independently of
the other. Combining values from the two systems may result in nonconformance with this specification.
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
2.1 ASTM Standards:
A29/A29M Specification for General Requirements for Steel Bars, Carbon and Alloy, Hot-Wrought
A36/A36M Specification for Carbon Structural Steel
A370 Test Methods and Definitions for Mechanical Testing of Steel Products
A615/A615M Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement
A706/A706M Specification for Deformed and Plain Low-Alloy Steel Bars for Concrete Reinforcement
3
2.2 AWS Standard:
AWS D1.1/D1.1M-2004D1.1/D1.1M-2020 Structural Welding Code—Steel
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel, Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee A01.05
on Steel Reinforcement.
Current edition approved Sept. 1, 2022Nov. 1, 2022. Published September 2022November 2022. Originally approved in 2005. Last previous edition approved in 20162022
ɛ1
as A1044/A1044M – 16aA1044/A1044M – 22. . DOI: 10.1520/A1044_A1044M-22.10.1520/A1044_A1044M-22A.
2
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 the ASTM website.
3
Available from American Welding Society (AWS), 8669 NW 36 St., #130, Miami, FL 33166-6672, http://www.aws.org.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
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A1044/A1044M − 22a
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2.3 U.S. Military Standards:
MIL-STD-129 Marking for Shipment and Storage
MIL-STD-163 Steel Mill Products Preparation for Shipment and Storage
4
2.4 U.S. Federal Standard:
Fed. Std. No. 123 Marking for Shipment (Civil Agencies)
3. Terminology
3.1 Definitions of Terms Specific to This Standard:this Specification:
3.1.1 base rail, n—the steel shape or plate that a group of headed studs is attached to by welding or other means.
3.1.1.1 Discussion—
Stud assemblies comprised of single-headed studs (Type 1) require a base rail; th
...
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