1999 MSJC and 2002 MSJC (allowable stress design)
2002 MSJC (strength design) and 2000 and 2003 IBC
Fig. 1. Illustrations detail a 20-ft high, low-lift grouted CMU wall using lap and mechanical or welded splices.
Fig. 2. A threaded coupler is simply a short shaft that receives the threaded portion from two adjoining sections of reinforcement.
Fig. 3. A wedge coupler receives reinforcement from both sides, with the bars lapped next to each other for a short length.
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