Which best describes a mechanical connection in which the sleeve is heated to a malleable temperature and fitted over the end of one bar?

Which best describes a mechanical connection in which the sleeve is heated to a malleable temperature and fitted over the end of one bar?

• A. Hot Forged Steel Sleeve
• B. Metal Filled Sleeves
• C. Threaded Steel Coupling
• D. End-Bearing Connection

Answer: (A)

Heating a sleeve until it becomes malleable and slipping it over the end of a reinforcing bar creates a permanent mechanical splice. As the heated sleeve cools, it contracts and grips the bar, forming a tight, interlocked joint without threads or welding. This is the hot forged sleeve method. It differs from threaded couplings, which rely on screw threads to join bars; end-bearing connections, which transfer load through bearing surfaces rather than a sleeve; and from metal-filled sleeves, which is not a standard reinforcing‑steel joining method.

Heating a sleeve until it becomes malleable and slipping it over the end of a reinforcing bar creates a permanent mechanical splice. As the heated sleeve cools, it contracts and grips the bar, forming a tight, interlocked joint without threads or welding. This is the hot forged sleeve method. It differs from threaded couplings, which rely on screw threads to join bars; end-bearing connections, which transfer load through bearing surfaces rather than a sleeve; and from metal-filled sleeves, which is not a standard reinforcing‑steel joining method.