ASTM-A722 Historical Revision Information
Standard Specification for Uncoated High-Strength Steel Bars for Prestressing Concrete

ASTM-A722 - 2007 EDITION - SUPERSEDED
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This specification covers uncoated high-strength steel bars intended for use in pretensioned and post-tensioned prestressed concrete construction or in prestressed ground anchors. Two types of bars are considered: Type I bar, which has a plain surface; and Type II bar, which has surface deformations. The bars shall be rolled from properly identified heats of ingot cast or strand cast steel. The bars shall be subjected to cold-stressing and then shall be stress-relieved to produce the prescribed mechanical properties. Yield strength, elongation, and tension tests shall be performed.

ORDER

Scope

1.1 This specification covers uncoated high-strength steel bars intended for use in pretensioned and post-tensioned prestressed concrete construction or in prestressed ground anchors. Bars are of a minimum ultimate tensile strength level of 1035 MPa (150000 psi).

1.2 Two types of bars are provided: Type I bar has a plain surface and Type II bar has surface deformations.

1.3 Supplementary requirements of an optional nature are provided. They shall apply only when specified by the purchaser.

1.4 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

Keywords

deformed bars; high-strength steel bars; plain bars ; post-tensioning; prestressed concrete

To find similar documents by ASTM Volume:

01.04 (Steel--Structural, Reinforcing, Pressure Vessel, Railway)

To find similar documents by classification:

77.140.15 (Steels for reinforcement of concrete)

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Document Number

ASTM-A722/A722M-07

Revision Level

2007 EDITION

Status

Superseded

Modification Type

Revision

Publication Date

Jan. 1, 2007

Document Type

Specification

Page Count

5 pages

Committee Number

A01.05