Since you don't have to worry about pull-out, not much length is really needed. But you have to consider what is practical from a construction standpoint to purchase, get in place and hold correctly while the concrete is poured. I haven't checked to see what length 1" anchors (or simple bolts...
Hi guys.
I am new to this forum and would like to pose a question. I have seen more than one structural engineer designing drilled pier foundations for prefabricated pedestrian bridges who are not (at least to my limited understanding) providing for containment for the drilled pier core with...