ASTM A970 PDF

A/AM – 07 Standard Specification for Headed Steel Bars for Concrete Reinforcement, carbon-steel reinforcing bars, concrete reinforcement. ASTM A Headed Steel Bars锚固头钢筋标准_自然科学_专业资料。Designation : A /A M – 07 Standard Speci?cation for Headed Steel. Terminator headed bar systems comply with the requirements of , and editions of ASTM A Class A. • The D6, D14, and D16 families of.

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Worldwide Standards We can source any standard from anywhere in the world. Combining values from the two systems may result in non-conformance with the standard. Search all products by.

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The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. NOTE 4—The industry de? This examination and survey should be used for diagnostic purposes in the aastm that later production testing reveals ast, tension or bend test performance. This type of diagnostic examination should be conducted prior to continuous production for each combination of bar and head materials that will be produced.

Mechanical testing also shall be performed at intervals during production. A number in parentheses indicates the year of last reapproval. This specification covers deformed and plain steel reinforcing bars in cut lengths with a head attached to one or both ends for reinforcing concrete structures.

The information should be traceable to speci? ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date. Mechanical Test and Performance Requirements 6. ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. Heads are forge formed, machined from bar stock, or cut from plate.

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Failure mode shall be reported as partial or total fracture of the bar, the head, or the head-to-bar connection.

Where the welded head interferes with placement of the bend test mandrel, sufficient head material and any excess material associated with the welding process shall be removed along one edge of the reinforcing bar to provide a? Class A and Class B. It is the a9700 of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

During production tests of welded, forged, or threaded bars, if any tensile test specimen fails to not meet the requirements for tensile properties in 6.

The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Find Similar Items This product falls into the following categories. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

Such requirements shall include but are asstm limited to the following: Material and Manufacture 5. For forged headed bars or threaded headed bars, the reinforcing bars shall conform to Speci? A superscript epsilon e indicates an editorial change since the last revision or reapproval.

Nominal head dimensions were previously provided to inform manufacturers of these systems as to typical head dimensions.

The anchorage of the bar via the head provides the shortest tensile development length possible and essentially means that the headed bar is immediately anchored. The tests shall be repeated for each combination of head and bar material speci?

ASTM A Headed Steel Bars锚固头钢筋标准_百度文库

Attachment can be accomplished through welding, by integrally hot forging of a head from the reinforcing bar end, by internal threads in the head mating to threads on the bar end, or by a separate threaded nut to secure the head to the bar. Heads are forge formed, machined from bar stock, or cut from plate. Z970 website is best viewed with browser version of up to Microsoft Internet Explorer adtm or Firefox 3.

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Note 1—This specification is applicable for headed bars produced with welded, threaded, or forged heads and used for reinforcement of concrete structures. You may experience issues viewing this site in Internet Explorer 9, 10 or This specification is applicable for headed bars produced with welded, threaded, or s970 heads and used for reinforcement of concrete structures.

The other option is for the head to have a non-threaded hole so that the head is held on the bar end by a nut and a counternut.

ASTM A970/A970M – 18

If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the aetm shown below. The data on this in-process monitoring should be recorded and preserved by the manufacturer for a minimum of one year after manufacture of the welded headed bars.

The manufacturer shall afford the inspector reasonable access to the facilities to satisfy the inspector that the materials and procedures are in accordance with this speci? This abstract is a brief summary of the referenced standard. Whereas, Class B headed steel bars ensure that the tensile strength of the actual bar is achieved along with the speci? Bend testing of the large bar sizes is subject to agreement between purchaser and manufacturer.

The requirements of this specification are not applicable to headed bars where the attachment of the head is accomplished by alternate means. A minimum of two tests shall be conducted during the production shift or period.