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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No nominal head dimensions are now astn in the speci? September Replaced By: For forged headed bars or threaded headed bars, the reinforcing bars shall conform to Speci? 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.

Learn more about the cookies we use and how to change your settings. The requirements of this specification are only applicable to headed bars where the attachment of the head is accomplished by one of the methods listed in 1.

This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? We use cookies to make our website easier to use and to better understand your needs. This specification is applicable for headed bars produced with welded, threaded, or forged asstm and used for reinforcement of concrete structures.

ASTM does not give any warranty express asrm implied or make any representation that the contents of this abstract are accurate, complete or up to date. Class A headed steel bars ensure that the speci?

Historical Version s – view previous versions of standard.

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ASTM A970/A970M – 18

The aetm shall be repeated for each combination of head and bar material speci? Combining values from the two systems may result in non-conformance with the specification.

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.

In the previous criteria, the failure of the head or the head-to-bar connection within the attachment region was cause for rejection. Current edition approved Oct. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices aastm determine the applicability of regulatory limitations prior to use.

Head dimensions shall de?

Standard Specification for Headed Steel Bars for Concrete Reinforcement

Designers, purchasers, and manufacturers who have no other information regarding head proportioning a9970 refer to these dimensions as a starting point.

Work Item s – proposed revisions of this standard.

Heads are forge formed, machined from bar stock, or cut from plate. A superscript epsilon e indicates an editorial change since the last revision or reapproval. The head shall either thread onto the bar directly, or it shall be held on the bar end by a nut and counternut. Referenced Documents purchase ast The documents listed below are referenced within the subject standard but asym not provided as part of the standard.

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. The head dimensions found asgm editions prior to of this speci? 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.

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Bend testing of the large bar sizes is subject to agreement between purchaser and manufacturer.

ASTM A Headed Steel Bars锚固头钢筋标准_百度文库

Combining values from the two systems may result in non-conformance with the standard. 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 address shown below. Whereas, Class B headed steel bars ensure that the tensile strength of the actual bar is achieved along with the speci? The head may be internally threaded so that it directly screws on the threaded bar end.

This standard does not purport to address all of the safety concerns, if any, associated with its use.

ASTM A / AM – 18 Standard Specification for Headed Steel Bars for Concrete Reinforcement

Material and Manufacture 5. In either case the threads should be carefully cut or rolled so that the engagement of the threads results in a uniform load in the head-to-bar connection.

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. The values stated in each system are not exact equivalents; therefore, each system shall be s970 independently of the other.

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.