THE DESIGN

Following recommended values for lap splice length "X" and anchorage length "Y".  The splice length "X" must be coordinated with the project specific requirements based on the slab design in addition to the below minimum lap lengths.

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It should be noted that the anchorage length "Y" must terminate as a U-bar or in a 90 degree standard hook.  The standard hooks must satisfy the minimum inside bend diameter and minimum straight extension lengths L-ext as described in ACI 318M-14 Table 25.3.1.

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The connection box case design offers an efficient key and rebate sufficient to transfer the design shear force from the slab wall into the wall.  It requires no further joint preparation.  The rebate remains embedded in the joint and is filled with concrete on the subsequent concrete pour.