Pull out force calculation
Pull out force calculation
(OP)
Hi,
I face some problem in my research..... can anyone provide the formula to calculate the pull out force required to pull the steel bar from concrete?
Thanks a lot.
I face some problem in my research..... can anyone provide the formula to calculate the pull out force required to pull the steel bar from concrete?
Thanks a lot.





RE: Pull out force calculation
And is this for school??
RE: Pull out force calculation
This is for my own research.
RE: Pull out force calculation
assuming a conical failure of the concrete at 45 degrees
Force = shear strength of concrete x pi x 1.4142 x H^2
where H is the depth of the steel bar.
Here's where I got the info:
http://
RE: Pull out force calculation
The 45 degree formula given by zelgar is for headed anchor bolts and not necesarily applicable for plain bar.
RE: Pull out force calculation
RE: Pull out force calculation
Un = 0.80*35*sqrt(fc′)= 28*sqrt(fc′)
Developement bond length (Ultimate)is ldu=Abfy/Un
ldu=.0357*Ab*fy/sqrt(f'c) for spacing of less than 6 inches
ldu=.029*Ab*fy/sqrt(f'c) for spacing of greater than 6 inches
Responsively
Boo1
RE: Pull out force calculation
thanks, Dik
RE: Pull out force calculation
http:
RE: Pull out force calculation