AASHTO M 31M/M 31-21 PDF Download

The AASHTO M 31M/M 31-21 standard provides guidelines for the manufacturing and use of steel bars used in concrete reinforcement. The specification covers both deformed and plain carbon and low-alloy steel bars, which can be supplied in either cut lengths or coils.

The standard allows for the inclusion of alloy additions in the steel bars, as long as the resulting product meets all the other requirements outlined in the specification. The sizes and dimensions of the deformed bars are listed in Table 1, providing a standardized reference for manufacturers and users.

It's important to note that the specification includes explanatory notes and footnotes, which provide additional information and clarifications. However, these notes and footnotes, excluding those in tables and figures, are not considered as requirements of the standard.