Which standards specify the properties of reinforcing steel and their testing?

• A. ISO standards
• B. ACI Building Code
• C. ASTM A615/A706 and related test methods
• D. NEC electrical standards

Answer: (C)

Reinforcing steel must meet defined material properties and be verified through standardized tests. The standards that specify these properties and how to prove them are ASTM A615 and A706, which cover carbon and low-alloy reinforcing bars and outline the required mechanical properties (such as yield and tensile strength, elongation, and ductility) as well as weldability for the relevant type. They also point to the appropriate testing procedures. The related test methods, including tensile and bend tests, are described in ASTM testing standards (like A370) used to demonstrate compliance with those property requirements. ISO standards exist but aren’t the primary reference for reinforcing-bar properties in this context, NEC is unrelated to reinforcing steel, and while the ACI Building Code may reference these specifications, the actual properties and tests are defined by ASTM A615/A706 and the associated test methods.