scope:

General. This Standard covers uncoated stress-relieved and low-relaxation smooth round wire, uncoated seven-wire stress-relieved and lowrelaxation strand, and high-strength stress-relieved alloy steel bars used in prestressed concrete construction. All requirements are applicable to such wire, strand, and bars unless specifically stated otherwise.

Wire. This Standard covers uncoated stressrelieved and low-relaxation round high-carbon steel wire for use in prestressed concrete construction in button-head-type (cold-end-deformation) and wedge-type anchorage. The use of quenched and tempered wire shall not be permitted.

Strand. This Standard covers seven-wire, uncoated, stress-relieved and low-relaxation steel strand for use in pre-tensioned and post-tensioned prestressed concrete construction. The use of quenched and tempered wire shall not be permitted.

Bars. This Standard covers plain or deformed high-tensile strength alloy bars having a nominal diameter greater than 9 mm. The use of quenched and tempered bars shall not be permitted. Supplementary requirements of an optional nature are provided and they shall apply only when specified by the purchaser.