scope:

This specification covers deformed and plain billet-steel concrete-reinforcement bars. A deformed bar is defined as a bar that is intended for use as reinforcement in reinforced concrete construction. The surface of the bar is provided with lugs or protrusions (herein-after called deformations) which inhibit longitudinal movement of the bar relative to the concrete which surrounds the bar in such construction and conform to the provisions of this specification. The standard sizes and dimensions of deformed bars and their number designations shall be those listed in Table I.

A supplementary requirement (SI) of an optional nature is provided. It shall apply only when specified by the purchaser.

Bars are of two minimum yield levels: namely, 40 000 psi and 60 000 psi, designated as Grade 40 and Grade 60, respectively.

Hot-rolled plain rounds, in sizes up to and including 2 in. in diameter in coils or cut lengths, when specified for dowels, spirals and structural ties or supports shall be furnished under this specification in Grade 40 and Grade 60 (Note I). For bending properties, test provisions of the nearest nominal diameter deformed bar size shall apply. Those requirements providing for deformations and marking shall not be applicable.

The weldability of the steel is not part of this specification.

NOTE 1-The weight for plain rounds smaller than ³/₈ in. in diameter shall be computed on the basis of the size in Specification A 510.

NOTE 2-A complete metric companion to Specification A 615 has been developed-A 615M; therefore, no metric equivalents are presented in this specification.