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

PROFIS ENGINEERING

Table 16. Resultant Tension / Shear Loads and Individual Tension / Shear Loads

	Tension Load	Sustained Tension Load	Shear Load	Shear Load( x)	Shear Load( y)
Anchor	N ua = 20,000 lb Load / Anchor	N ua, s = 16,000 lb Load / Anchor	V ua =-12,000 lb Load / Anchor	V ua, x = 0 lb Load / Anchor	V ua, y =-12,000 lb Load / Anchor

Tension

eccentricity

e c1, N( x direction) = 0 in

e c2, N( y direction) = 1 in

Shear eccentricity

e cV = 0 in

Resultant Tension Load( N ua) = 20,000 lb

Resultant Shear Load( V ua) = 12,000 lb 1483 lb = highest loaded anchor in tension 750 lb = highest loaded anchor in shear

Table 17. Geometry Checks

h ef = 10.0 in ESR-4868 Table 12 h ef, min = 3.5 in h ef, max = 15.0 in

10.0 in > 3.5 in OK 10.0 in < 15.0 in OK

h concrete = 12.0 in	ESR-4868 Table 12 ESR-4868 Figure 1 [ 2 ]	h ef = 10.0 in d hole = 0.875 in h min = 10 in + 1.75 in	12.0 in > 11.75 in OK
		→ h min = 11.75 in

Table 18. Nominal Steel Strength in Tension( N sa)

N sa = ESR value ESR-4868 Table 11 N sa = 25,090 lb / anchor

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Design guide for considering concrete breakout in shear using ACI 318 anchoring-to-concrete provisions October 2025 | Page 93