Bolt Pull Out Force Calculator:
Enter the values of The Diameter of The Hole D(inches) , The Length of The Hole L(inches) & The Material Bond Factor MF(PSI) to determine the value of The Bolt Pull Out of Force Fpo(lb-f) .
Bolt Pull Out Force Formula:
The bolt pull out force Fpo(lb-f) in lb-f is equal to the diameter D(inches) in inches and the length L(inches) in inches times 3.141 then multiply by the material bond factor MF(PSI).
The formula of the bolt pull out of force can be written as,
Fpo(lb-f) = D(inches) * PI * L(inches) * MF
Here,
Fpo(lb-f) = the bolt pull out of force in lb-f
D(inches) = the diameter of the hole in inches
L(inches) = the length of the hole in inches
MF(PSI) = the material bond factor in PSI
= 600 for epoxy to concrete bond
= 1600 for epoxy to steel bond
Calculation for Bolt Pull Out Force :
1)To determine the bolt pull out of force and the diameter of the hole 3inches and the length of the hole 5 inches and the material bond factor 600 PSI (concrete bond)
Answer
Fpo = D * PI * L * MF
Fpo = 3 * 3.141 * 5 * 600
Fpo = 28269 lb-f
2)To determine the length of the hole and the bolt pull out of force 28269 lb-f and the diameter of the hole 3inches and the material bond factor 600 PSI (concrete bond)
Answer
Fpo = D * PI * L * MF
28269 = 3 * 3.141 * L * 600
L = 5inches