Design guide for considering concrete breakout in shear using ACI 318 anchoring-to-concrete provisions October 2025 | Page 13

PROFIS ENGINEERING
Figure 4.2( a).
Reference
Figure 4.2( a) [ 13 ]. The anchor spacing in the y direction between rows 1 and 2 equals s y12. The anchor spacing in the y direction between rows 2 and 3 equals s y23. The anchor spacing in the y direction between rows 3 and 4 equals s y34. Assume s y12, s y23, and s y34 are each > c a1, row 1, so Case 1 / Case 2 will be considered when calculating concrete breakout in shear. Case 1 / Case 2 provisions assume V ua is distributed proportionately between rows 1, 2, 3 and 4. For this anchorage, ACI 318 Case 1 / Case 2 provisions for considering concrete breakout in shear would be extrapolated as follows.
October 2025 13