AASHTO - American Association of State Highway and Transportation Officials
Scope
This specification covers Type I and Type II high-strength steel bars intended for use in prestressed concrete construction or in prestressed ground anchors. Bars are of a minimum ultimate tensile strength level of 1035 MPa [150@000 psi]. Two types of bars are provided: Type I bar has a plain surface and Type II bar has surface deformations. Supplementary requirements of an optional nature are provided. They shall apply only when specified by the purchaser. This specification is applicable for orders in either SI units (M 275M) or in inch-pound units (M 275). SI units and inch-pound units are not necessarily equivalent. Inch-pound units are shown in brackets in the text for clarity@ but they are the applicable values when the material is ordered to M 275.