The May 2009 issue of Foundation Drilling had an article by Dan and Robert summarizing the recent research on drilled shafts socketed into rock for the Southeast Chapter of ADSC .

The article has been posted to our Publications Page.  The full report is located here, for those looking for a little light reading. 

A test site has been selected for Atlanta in the Piedmont formation.  Check back here or at the project page for updates as things move forward.