Samukus This standard is also available to be included in Standards Subscriptions. No items in cart. In contrast, this specification requires the area of the head of the studs for stud assemblies to be at least 10 times the a of the shank. You can download and open this file to your own computer but DRM prevents opening this file on another computer, including a networked server. If the document is revised or amended, you will be notified by email. Combining values from the two systems may result in nonconformance with this specification.

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A number in parentheses indicates the year of lastreapproval. Stud assemblies consist of eithersingle-headed studs attached to a steel base rail by welding, ordouble-headed studs mechanically crimped into a steel shape.

NOTE 1—The configuration of the studs for stud assemblies is muchdifferent than the configuration of the headed-type studs prescribed inSection 7, Figure 7. Ratios of the cross-sectionalareas of the head-to-shank of the AWS D1. In contrast, this specification requires the area of the headof the studs for stud assemblies to be at least 10 times the area of theshank.

Thus, the standard headed-type studs in Section 7, Figure 7. Within the text, the SI units are shownin brackets. The values stated in each system are not exactequivalents; therefore, each system must be used indepen-dently of the other. Combining values from the two systemsmay result in nonconformance with this specification.

Referenced Documents2. Federal Standard:4Fed. For stud assem-blies in which double-headed studs are mechanically crimpedinto a base rail, for example, into a steel channel, the base railis not required to provide anchorage to the concrete; thepurpose of the base rail is to hold the studs in the appropriatelocation, direction, and spacing until the concrete is cast.

Ordering Information4. Such requirements shall include but are notlimited to the following Current edition approved March 1, Published March Originallyapproved in DOI: United States1of the studs should be specified such that the appropriate height of the studassembly is achieved.

Materials and Manufacture5. The stud material shall conform to the requirements for tensileproperties prescribed in Table 1. Thebase rail material shall conform to the requirements for tensileproperties prescribed in Table 2.

Themanufacturer shall furnish documentation to the purchaser inthe form of test reports that confirms the suitability of theselected base rail material for: 1 manufacturing stud assem-blies; and 2 structural adequacy of the stud assemblies for theintended application.

Tensile Tests6. Tensile tests on the studs shall beconducted by the assembly manufacturer, or an inspectionagency, or the stud supplier. Tensile testing of headed studs shall be performed usinga test fixture as described in Section 7. Acceptance Criteria7. The failure shall occur either in the stud material a minimum ofone-half shank diameter from the head-to-shank or stud-to-base rail connection, or by tearing a hole in the base rail.

Failure of the head or stud-to-base rail connection within theattachment region shall be cause for rejection. The tensile forceat which failure occurs shall exceed the minimum yieldstrength of the stud. Number of Tests8. It shall be permissible totest separate base rail material of the same thickness, chemicalcomposition, and configuration of the base rails used inproduction. One test at the start and one test at the end of each8-h production shift or less than 8-h production period, or atrandom intervals during the production period, shall be con-ducted.

Twospecimens taken at random from the production lot shall betested during a retest. Both assembled specimens shall pass theminimum yield strength requirements of Section 6 or the lotshall be rejected. Radial cracks or bursts in the head s of the studs shall not be cause for rejection provided that thelength of cracks or bursts do not exceed the value 0. Surface rust and mill scale shall not be causefor rejection provided they do not adversely affect welding orstructural strength of the stud assembly.

Cracks or bursts designate an abrupt interruption of theperiphery of the stud head by radial separation of the metal. The manufac-turer shall afford the inspector reasonable access to the facili-ties to satisfy the inspector that the materials and proceduresare in accordance with this specification.

Unless otherwise specified, any rejectionbased on tests made in accordance with this specification shallbe reported to the manufacturer within five working days fromthe receipt of samples by the purchaser. In case of dissatisfaction with the results of the test, themanufacturer shall make claim for a rehearing within that time. Certification and Test Reports The certificate shall include astatement of compliance to this specification, copies of testreports required by Acopy of the test report shall be provided to the purchaser uponrequest.


ASTM A1044 Steel Stud Assemblies Test Machine





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