Anchor bolt embedment depth
Anchor bolt embedment depth
(OP)
This is probably a dumb question, but is there a simple rational method to determine the required depth of embedment for a single headed anchor bolt in normal reinforced concrete 24" thick that is nowhere near the edge or another anchor? If I use a 45 degree cone, the depth comes out pretty shallow but if I look at other designs they use 2 feet or more. I'm looking to design either cast in place or Hilti type for this application. The Hilti type is right from their catalog, it's the cast in place that I am struggling with. I have 1 1/2" bolts needing to develop 32000 pounds.





RE: Anchor bolt embedment depth
RE: Anchor bolt embedment depth
ACI 349.2R-97
(Reapproved 2002)
Embedment Design Examples
Reported by ACI Committee 349
PART A—Examples: Ductile single embedded
element in semi-in nite concrete. . . .p. 349.2R-3
Example A1 Single stud, tension only as
RE: Anchor bolt embedment depth
RE: Anchor bolt embedment depth
RE: Anchor bolt embedment depth
RE: Anchor bolt embedment depth
RE: Anchor bolt embedment depth
RE: Anchor bolt embedment depth
RE: Anchor bolt embedment depth
The answer is Yes and it is in ACI318 Appendix D. This method, the concrete capacity design (CCD) method is based on extensive research and supersedes and is much better the old method using 45 degree cones.
The anchors should be designed to yield before concrete failure to ensure ductility.
RE: Anchor bolt embedment depth
RE: Anchor bolt embedment depth
RE: Anchor bolt embedment depth
I wil try to place a copy of this set of worksheets at some file repository and then pass the link. Sorry, I didn't looked again this thread these days.
RE: Anchor bolt embedment depth