ACI 318 / PCI Base plate with through bolts
ACI 318 / PCI Base plate with through bolts
(OP)
Hi
Please find the attachment. I would like to have reference to design plates and concrete checks.
Regards
M.S.Boobathi
Please find the attachment. I would like to have reference to design plates and concrete checks.
Regards
M.S.Boobathi






RE: ACI 318 / PCI Base plate with through bolts
1) I'd treat it as an an eccentric punching shear problem with the lower plate defining the origin of the critical shear perimeter. Moment = Shear x 0.5 x slab depth.
2) I'll prestress the bolts so that I can transfer shear to the concrete via shear friction at the base plate interface. Trouble is, prestressing short bolts reliably is tough. And they tend to relax over time as a result of concrete creep etc.
3) In addition to shear friction, I'll check the bolts for bearing against the concrete assuming that the bolts bear uniformly over a distance of six times the bolt diameter. This is just something that somebody told me to do once and I don't have a whole lot of faith in it.
4) If you're near a free edge in the direction of shear, you'll need to approximate a breakout failure check similar to what we do with ACI appD checks.
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
RE: ACI 318 / PCI Base plate with through bolts
RE: ACI 318 / PCI Base plate with through bolts
RE: ACI 318 / PCI Base plate with through bolts
RE: ACI 318 / PCI Base plate with through bolts
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
RE: ACI 318 / PCI Base plate with through bolts