ASTM WK90757
Revision of A970/A970M-18 Standard Specification for Headed Steel Bars for Concrete Reinforcement
Rationale
The bending pin diameters listed in the Bend Test Requirements table are understood by many to be the maximum allowable bending diameters. Bending around a smaller diameter pin than those specified in the table is a more challenging and conservative bend test. There are instances where manufacturers are not able to bend around pin diameters with the exact dimensions listed in the table. In some cases, a pin with the exact dimensions may not be available, or a pin may be worn and have a smaller diameter than originally designed. The proposed revision adds the word “Maximum” to allow manufacturers to bend around a smaller diameter pin those specified in the table. The superscript A in the table is also corrected to apply to the entire table.
Work Item Status
Date Initiated: 05-14-2024
Technical Contact: Ryan Pelter
Item: 010
Ballot: A01 (24-05)
Status: Will Reballot Item