ASTM A1044:16 pdf download

ASTM A1044:16 pdf download.Standard Specification for Steel Stud Assemblies for Shear Reinforcement of Concrete.
5.2.3 For stud assemblies in which double-headed studs (Type 2) are mechanically crimped into a steel shape, the steel shape shall be sufficiently stiff to hold the studs in the appropriate location, direction, and spacing.
5.2.4 For stud assemblies in which double-headed studs (Type 2) are attached to a steel plate by spot welding or tack welding, the steel plate shall be sufficiently stiff to hold the studs in the appropriate location, direction and spacing.
5.3 Dimensions:
5.3. 1 Minimum dimensions of Type I single-headed studs and plate base rails shall conform to Table 3.
5.3.2 Minimum dimensions of Type 2 double-headed studs shall conform to Table 4.
NOTE 3—The configurations of stud assemblies are shown in Fig. I.
5.3.3 Headed studs with heads that have variable thickness shall be permitted, provided they meet the tensile requirements of this specification.
6. Tensile Tests
6.1 At periodic intervals, tensile tests of the headed stud with a single or double head formed at one or both ends of the shank or welded to the base rail shall be performed as specified in the quality assurance program of the manufacturer and agreed upon by the purchaser. Tensile tests on the studs shall be conducted by the assembly manufacturer, or an inspection agency, or the stud manufacturer.
6.2 Tensile testing shall be performed in accordance with the requirements described in Test Methods and Definitions A370. Tensile testing of headed studs shall be performed using a test fixture as described in Section 7.3.2 of AWS Dl.l/ D1.1M.
7. Acceptance Criteria
7.1 In addition to meeting the strength requirements of 5. 1 and 5.2. no observed partial or total fracture of the head, the stud weld, or the stud-to-base rail connection shall be permitted. The failure shall occur either in the stud material a minimum of one-half shank diameter from the head-to-shank or the 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 the attachment region shall he cause for rejection. The tensile force at which failure occurs shall exceed the minimum specified yield strength of the stud material.
8. Number of Tests
8.1 A minimum of two tensile tests shall be conducted during a production shift or period. It shall be permissible to test separate base rail material of the same thickness,chemicalcomposition,and configuration of the base rails used inproduction.