Design guide for considering concrete breakout in shear using ACI 318 anchoring-to-concrete provisions October 2025 | Page 11

PROFIS ENGINEERING
Figure
4.1( a).
Reference
Figure 4.1( b) [ 11 ]. When considering Case 1 / Case 2 for this example, the shear load V ua is assumed to be distributed proportionally between columns 1 and 3.
Figure 4.1( b).
Calculate the design concrete breakout strength( ϕV cbg, col n) for col 1 and col 3 using the edge distance in the direction of the shear load for that column( c a1, col n).
• Calculate ϕV cbg, col 1 using c a1, col 1.
• Calculate ϕV cbg, col 3 using c a1, col 3.
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