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 test specimen shall be placed in the testing machine with the wstm supported to prevent movement and bending of the head. Work Item s – proposed revisions of this standard.
The head may be internally threaded so that it directly screws on the threaded bar end. The minimum length of the test specimen shall be the greater of mm [10 in. NOTE 4—The industry de? A superscript epsilon e indicates an editorial change since the last revision or reapproval.
Link to Active This link will always route to the current Active version of the standard. The requirements of this speci? 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.
ASTM A970/A970M – 18
The requirements of this specification are not applicable to headed bars where the attachment of the head is accomplished by alternate means. This specification is applicable for headed bars produced with welded, threaded, or forged heads and used for reinforcement of concrete structures.
Worldwide Standards We can source any standard from anywhere in the world. If the axtm of both test specimens meet the speci? Combining values from the two systems may result in non-conformance with the standard.
Class A and Class B. This type of diagnostic examination should be conducted prior to continuous production for each combination of bar and head materials that will be produced. 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 asym, or cut from plate.
ASTM A / AM – 07 Standard Specification for Headed Steel Bars for Concrete Reinforcement
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. Nominal head dimensions were previously provided to atm manufacturers of these systems as to typical head dimensions.
The records to be maintained include, but are not limited to, certi? Bend testing of wstm large bar sizes is subject to agreement between purchaser and manufacturer.
The requirements in Annex A1 only apply when specified by the purchaser see 4. A copy of the test report shall be provided to the purchaser upon request.
This standard is subject to revision at any time by the responsible technical committee and must be reviewed every?
For forged headed bars or threaded headed bars, the reinforcing bars shall conform to Speci? Link to Active This link will always route to the current Active version of the standard.
Within the text, the SI units are shown in brackets. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. This specification is applicable for headed bars produced with welded, threaded, or forged heads and used for reinforcement of concrete structures. You may find similar items within these categories by selecting from the choices below:. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other.
Combining values from the two systems may result in non-conformance with the standard. Material and Manufacture 5. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. 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.
Carbon-steel reinforcing bars, cold-extruded threaded headed reinforcing bars, cold-swaged coupling sleeve headed reinforcing bars, cold-swaged external sleeve headed reinforcing bars, cold-swaged headed sleeve reinforcing bars, concrete reinforcement, deformations protrusionsferrous-filled headed reinforcing bars, headed reinforcement, headed reinforcing bars, integrally-forged headed reinforcing bars, low-alloy steel reinforcing bars, threaded headed reinforcing bars, welded headed reinforcing bars.
Note 1 This specification is applicable for headed bars produced with welded, threaded, or forged heads and used for reinforcement of concrete structures. The required mandrel dimensions for bend testing are prescribed in Table 1. Current edition approved Oct.
Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Individual asym will have to establish their own standards aa970 the out-of-roundness that can be tolerated with their particular threading system.
Provisions shall be made for clearance between the support and any weld or forming material on the reinforcing bar-to-head connection. Active view current version of standard.
A minimum of two tests shall be conducted during the production shift or period. A number in parentheses indicates the year of last reapproval.
It is informational only and asmt an official part of the standard; the full text of the standard itself must wstm referred to for its use and application. 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.
September Replaced By: Click to learn more. Originally approved in The requirements in Annex A1 only apply when specified by the purchaser see 4. Class A has been introduced for applications that only require the development of the minimum tensile strength of the reinforcing bar. You may experience issues viewing this site in Internet Explorer 9, 10 or