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

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. Material, manufacturing and testing requirements for the reinforcing bars shall be in accordance with other ASTM documents listed herein.

You may experience issues viewing this site in Internet Explorer 9, 10 or Nominal head dimensions historically have called for gross head area to be ten astk the bar area with the net bearing area of the head to be nine times the bar area. The centerline of the bend test mandrel shall be placed at the intersection of the reinforcing bar and the weld, as shown in Fig.

Note 1—This specification is applicable for headed bars produced with welded, threaded, or forged heads and used for reinforcement of concrete structures. Class A has been introduced for applications that only require the development of the minimum tensile strength of the reinforcing bar. The requirements of this specification are not applicable to headed bars where the attachment of the head is accomplished by alternate means.

Users of this standard are expressly advised that determination of the validity of any such patent rights, and the asgm of infringement of such rights, are entirely their own responsibility.

ASTM A970/A970M – 18

Designers, purchasers, and manufacturers who have no other information regarding head proportioning may refer to these dimensions as a starting point. The information obtained can be essential in eliminating problems with strength or ductility of the welded or forged head-to-bar connection, or both. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Class A headed steel bars ensure that the speci?

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Standard Specification for Headed Steel Bars for Concrete Reinforcement

If the results of both test specimens meet the speci? Head dimensions shall de? Both specimens shall pass the tension test requirements of Section 6, or the production lot shall be rejected. The requirements of this specification are not applicable to headed xstm where the attachment of the head is accomplished by alternate means. Individual manufacturers will have to establish a70 own standards for the out-of-roundness that can be tolerated with their particular threading system. Mechanical Test and Performance Requirements 6.

Work Item s – proposed revisions of this standard. This standard does not purport to address all of the safety concerns, if any, sstm with its use.

We use cookies to make our website easier to use and to better understand your needs. In addition, the Structural Concrete Building Code Committee of the Aetm Concrete Institute is currently working on developing design and detailing provisions for the use of headed bars in concrete structures.

ASTM A / AM – 09 Standard Specification for Headed Steel Bars for Concrete Reinforcement

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. Material asfm Manufacture 5. Find Similar Items This product falls into the following categories. The requirements in Annex A1 only apply when specified by the purchaser see 4. Search all products by. The requirements of this specification are aastm applicable to headed bars where the attachment of the head is accomplished by alternate means.

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Notwithstanding the absence of a signature, the organization submitting the EDI transmission is responsible for the content of the sstm. 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. Accept and continue Learn more about the cookies we use and how to change your settings.

This specification is applicable for headed bars produced with welded, threaded, or forged heads and used for reinforcement of concrete structures. One metallographic examination and hardness survey should be carried out on a section of the head and welded or forged zone.

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. This standard applies only to headed bars with welded, threaded or forged heads. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? These rules will provide designers with appropriate guidance for the design of structures using headed reinforcing bars so that the anchorages remain ductile, even under earthquake loading.

Heads are forge formed, machined from bar stock, or cut from plate. 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.

This specification is applicable for headed bars produced with welded, threaded, or forged heads and used for reinforcement of concrete structures. Originally approved in Link to Active This link will always route to the current Active version of the standard.