Design guide for considering concrete breakout in shear using ACI 318 anchoring-to-concrete provisions October 2025 | Page 140

PROFIS ENGINEERING

Nominal Concrete Pryout Strength in Shear( V cpg)

There are 8 anchors in tension and 8 anchors in shear → calculate V cpg using N cpg for 8 anchors.

V cpg = k cp N cpg reference page 3: N cbg = 29,194 lb reference page 5: N ag = 36,807 lb

N cbg, pryout = 29,194 lb CONTROLS

N ag, pryout = 36,807 lb

N cpg = MIN N cbg, pryout | N ACI 318-19 Eq.( 17.7.3.1b) ag, pryout h ef = 8 in → k cp = 2.0 for h ef ≥ 2.5 in V cpg =( 2.0)( 29,194 lb) = 58,388 lb

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