Capacity of through bolts in concrete 1

[hokie66]

For bolts through concrete, loaded in double shear (equal both sides), and far from any edge, what design procedure would you follow? Assuming the bolt is cast in, or otherwise completely encased within the concrete matrix, would bending of the bolt have to be considered? Concrete bearing would obviously be important, but over what length of the bolt? Would edge failure of the concrete control, even if steel side plates restrain the concrete? Sorry to be so general, but just looking for advice on how others would approach the design.

 

[csd72]

I tend to chemically anchor these in, so I conservatively treat it as a chemset of the same length.

I disagree that bending can be completely ignored as therecould be spalling at the edges. I usually allow for an inch of spalling. All these things are included in the chemical anchor capacities.

 

[rowingengineer]

wedge failure is likely if there is no confining plate present, thus it would be good to include in your calcs, the ais "design of structural connections" has a diagram on it, page 248.

When in doubt, just take the next small step.

 

[eamonnc]

thanks for the responses! i will throw another wallaby, emu, caribou, elk, wapiti, and reindeer on the barbie!