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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The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Attachment can be accomplished through welding, by integrally hot forging of a head from the reinforcing bar end, by internal threads in a97 head mating to threads on the bar end, or by a separate threaded nut to secure the head to the bar.

You may find similar items within these categories by selecting from the choices below:. 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 zstm. Two specimens taken at random from the production lot shall be tested during a retest. The head dimensions provided in previous editions of this speci? Heads are forge formed, machined from bar stock, or cut from plate.

The opposite bar end of the bar, without a head attached, shall be gripped by the testing machine and loaded to failure. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? September Replaced By: This abstract is a brief summary of the referenced standard.

A copy of the test report shall be provided to the purchaser upon request. The information should be traceable to speci?

ASTM A970/A970M – 18

Individual manufacturers will have to adtm their own standards for the out-of-roundness that can be tolerated with their particular threading system. A superscript epsilon e indicates an editorial change since the last revision or reapproval. The values stated in each system are not exact equivalents; therefore, each system shall be used independently of the other. Historical Ast, s – view previous versions of standard. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

Notwithstanding the absence of a signature, the organization submitting the EDI transmission is responsible for the content of the report. Heads are forge formed, machined from bar stock, or cut from plate. In case of dissatisfaction with the results of the test, the manufacturer shall make claim for a rehearing within that time. This website is best viewed with browser version of up to Microsoft Internet Explorer 8 or Firefox 3.

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ASTM A / AM – 07 Standard Specification for Headed Steel Bars for Concrete Reinforcement

Heads are forge-formed, machined from bar stock, or cut from plate. Combining values from the two systems may result in non-conformance with the specification. Attachment can be accomplished through: The asm 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 values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Accept and continue Learn more about the cookies we use x970 how to change your settings.

In addition, the Structural Concrete Building Code Committee of the American Concrete Institute is currently a70 on developing design and detailing provisions for the use of headed bars in concrete structures. Material, manufacturing and testing requirements for the reinforcing bars shall be in accordance with other ASTM documents listed herein.

Active view current version of standard.

This specification is applicable for headed bars produced with welded, threaded, or forged heads and used for reinforcement of concrete structures. This examination and survey should be used for diagnostic purposes in asgm event that later production testing reveals unacceptable tension or bend test performance. The requirements of this specification are not applicable to headed bars where the attachment of the head is accomplished by alternate means.

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. 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.

No nominal head dimensions are now provided in the speci? Attachment can be accomplished through a70, 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 sstm the head to the bar. One test at the start and one test at the end of each 8-h shift or less than 8-h production period or at random intervals during the production period shall be conducted.

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This specification is applicable for headed bars produced with welded, threaded, or forged heads and used for reinforcement of concrete structures.

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. The inch-pound units shall apply unless the “M” designation of this specification is specified in q970 order.

Learn more about the cookies we use and xstm to change your settings. For machine straight threads, additional quality inspection of the reinforcing steel will be required to eliminate bars that may be excessively out of round. Nominal head dimensions were previously astmm to inform manufacturers of these systems as to typical head dimensions.

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 A / AM – 06 Standard Specification for Headed Steel Bars for Concrete Reinforcement

If the results of both test specimens meet the speci? Thus, integrally forged headed bars are allowed to use either Speci? The head shall either thread onto the bar directly, or it shall be held on the bar end by a nut and counternut.

Please download Chrome or Firefox or view our browser tips. 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.

Standard Specification for Headed Steel Bars for Concrete Reinforcement

Failure mode shall be reported as partial or total fracture of the bar, the head, or the head-to-bar connection. Work Item s – proposed revisions of this standard. Note 1 This specification is applicable for headed bars produced with a790, threaded, or forged heads and used for reinforcement of concrete structures.

Combining values from the two systems may result in non-conformance with the standard.