Preface
This new edition of CSA Standard G30.1, Billet-Steel Bars for Concrete Reinforcement, supersedes previous editions issued in 1923 under the designation A9, in 1930 and 1938 under the designation G30, and in 1954 under the designation G30.1.
This new edition is published as an individual Standard rather than part of one combined Series of Standards (G30.1 to G30.6—1954). This will allow future editions of the individual Standards to be published or revised, as required, without affecting the others.
The most important changes are in the bend test requirements for deformed bars. The new bend tests conform to the requirements of the current NBC and CSA design specifications. The intermediate grade bars up to size No. 6 satisfy the bending requirements for stirrups.
For structural and intermediate grades the upper limit for tensile strength has been deleted. This is similar to the hard grade and high strength grades where only the minimum tensile strength is specified.
This Standard was prepared by the Committee on Reinforcing Materials for Concrete under the jurisdiction of the Sectional Committee on Ferrous Metals, and was formally approved by these Committees and the CSA Technical Council.
Scope
1.1.1
This Standard covers two classes of billet-steel concrete reinforcement bars: namely, plain and deformed.
1.1.2
A deformed bar is defined as a bar which conforms to CSA Standard G30.6—1967, Minimum Requirements for the Deformations of Deformed Steel Bars for Concrete Reinforcement. The standard sizes of deformed bars with number designations shall be those listed in Table 1. The standard sizes of plain bars shall be designated by their nominal diameters.
1.2 Grades
Plain and deformed bars are of three grades: namely, structural, intermediate, and hard.
