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ASTM A970/A970M-18
Standard Specification for Headed Steel Bars for Concrete Reinforcement
Přeložit název
NORMA vydána dne 1.9.2018
Informace o normě:
Označení normy: ASTM A970/A970M-18
Datum vydání normy: 1.9.2018
Kód zboží: NS-897707
Počet stran: 10
Přibližná hmotnost: 30 g (0.07 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
Kategorie - podobné normy:
Anotace textu normy ASTM A970/A970M-18 :
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. This standard applies only to headed bars with welded, threaded or forged heads. Material, manufacturing and testing requirements for the reinforcing bars shall be in accordance with other ASTM documents listed herein.
Keywords:
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 (protrusions), ferrous-filled headed reinforcing bars, headed reinforcement, headed reinforcing bars, integrally-forged headed reinforcing bars, low-alloy steel reinforcing bars, threaded headed reinforcing bars
Doplňující informace
| 1. Scope | ||||||||||||||||||
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1.1 This specification covers deformed steel reinforcing bars in cut lengths, with a head attached to one or both ends, for concrete reinforcement. Heads are forge-formed, machined from bar stock, or cut from plate. Attachment can be accomplished through: 1.1.1 Welding; 1.1.2 Integrally hot forging of a head from the reinforcing bar end; 1.1.3 Internal threads in the head mating to threads on the bar end; 1.1.4 Cold-swaging an externally threaded coupling sleeve onto the reinforcing bar; 1.1.5 Cold-extruding an external coupling sleeve onto the reinforcing bar; 1.1.6 Cold-swaging an external coupling sleeve or headed sleeve onto the reinforcing bar; 1.1.7 Attaching a coupling sleeve to the end of the reinforcing bar by means of the means of a ferrous-filler medium; or 1.1.8 Separate threaded nut to secure the head to the bar. Note 1: 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 1.1.
1.2 Limitations on head dimensions and on obstructions and interruptions of bar deformations on the non-planar features on the bearing face of the head are presented in Annex A1. The requirements in Annex A1 only apply when specified by the purchaser (see 4.2.3). 1.3 This specification is applicable for orders in either inch-pound units as Specification A970 or SI units as Specification A970M. 1.4 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. 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 specification. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. |
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| 2. Referenced Documents | ||||||||||||||||||
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