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.

Author: Tumi Akibar
Country: Benin
Language: English (Spanish)
Genre: Medical
Published (Last): 20 August 2011
Pages: 274
PDF File Size: 16.17 Mb
ePub File Size: 18.85 Mb
ISBN: 753-6-71222-691-3
Downloads: 50655
Price: Free* [*Free Regsitration Required]
Uploader: Grozahn

You may find similar items within these categories by selecting from the choices below:.

ASTM A970/A970M – 18

This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? 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. One test at the start and one test at the end of asfm 8-h shift or less than 8-h production period or at random intervals during the production period shall be conducted.

The information obtained can be essential in eliminating problems with strength or ductility of the welded or forged a9770 connection, or both. Active view current version of standard.

The minimum length of the test specimen shall be the greater of mm [10 in. Designers should be cognizant that the head sizes must be evaluated to ensure that adequate anchorage is provided, that the steel and concrete stresses are not excessive for the loadings, and that the detailing of asgm connection is consistent with the intended usage.

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

A superscript epsilon e indicates an editorial asstm since the last revision or reapproval. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

  LM2678S ADJ PDF

In the previous criteria, the failure of the head or the head-to-bar connection within the attachment region was cause for rejection.

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

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part s970 the standard. The information should be traceable to speci? ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. Combining values from the two systems may result in nonconformance with the specification. Bend testing of welded headed bars in sizes No.

Nominal head dimensions historically have called for gross head area to be ten times the bar area with the net bearing area of the head to be nine times the bar area.

Standard Specification for Headed Steel Bars for Concrete Reinforcement

Material, manufacturing and testing requirements for the reinforcing bars shall be in accordance with other ASTM documents listed herein. This abstract is a brief summary of the referenced standard. The manufacturer shall furnish documentation to the purchaser, in the form of asmt or test reports, or both, that con?

Material and Manufacture 5. NOTE 4—The industry de? To achieve consistent performance of the attached head by welding, the bar material is limited to Speci? 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 9a70 threaded nut to secure the head to the bar.

Active asgm current version of standard. 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. Notwithstanding the absence of a signature, the organization submitting the EDI transmission is responsible for the content of the report.

  ECOFISIOLOGIA VEGETAL WALTER LARCHER PDF

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.

Worldwide Standards We can source any standard from anywhere in the world. Work Item s – proposed revisions of this standard. The test specimen shall be placed in the testing machine with the head supported to prevent movement and bending of the head. Heads are forge formed, machined from bar stock, or cut from plate. September Replaced By: This preparation shall ensure that the contact point of the bend mandrel is directly at the base of the reinforcing bar diameter as shown in Fig.

Attachment can be accomplished through:.

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 or forging of heads onto the bar ends, 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. Combining values from the q970 systems may result in non-conformance with the specification.

The requirements in Annex A1 only apply when specified by the purchaser see 4. 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? Historical Version s – view previous versions of standard.

A minimum of two tests shall be conducted during the production shift or period. The head dimensions provided in previous editions of this speci? The values stated in each system are not exact astk therefore, each system shall be used independently of the other.