Anchor Bolts
Anchor Bolts
(OP)
I have designed a 65 ton bearing press and now must attach it to a foundation. As a mechanical my knowledge of concrete is limited. I have searched some literature an have some formulas, but I do not know if these are the best for my situation. The load is in the horizontal direction this causes a tension force about 25ksi in one of my anchor bolts (FEA model). The formula I used for a j-bolt suggested 27.77" for a factor of safety of 3 with 3000psi concrete. I dont have this kind of depth available. Any suggestions on formulas or anchor types other than j-bolts? I would like to keep the foundation to 24" is this reasonable.





RE: Anchor Bolts
Depending also on your application and need, a manufactured anchor, such as an epoxy-grouted anchor, may work also. Check out Hilti, Ramset, and Powers for their epoxy anchors. If your loads are dynamic or under a great deal of vibration, these may or may not be suitable for you.
RE: Anchor Bolts
RE: Anchor Bolts
RE: Anchor Bolts
RE: Anchor Bolts
If you cannot get access to design equations, a manufacturer may be your only route, without hiring someone else to design your connections.
RE: Anchor Bolts
RE: Anchor Bolts
Appendix D of ACI 318 provides more specific guidelines for various anchor bolt/ base plate configurations.
The use of J bolts is not recommended for high strength bolts and many do not use them at all any more.