RC Pier says it has been updated for AASHTO LRFD 8th Edition. However, based on the Theory it appears that the pier cap for a multi-column pier is still designed using a frame analysis and beam theory (B-region) for all sections. With the new code, does RC Pier design the pier using the D-region criteria of Section 5.8.2? If not, will an update be provided in the near future which will allow Strut-Tie-Model (STM) to be used in the design of the pier cap and the footings per Section 5.8.2 for D-regions.
Was there any update on this question?
FYI... there is language even in the newest AASHTO 9th edition that allows us to design using traditional/legacy methods (AASHTO 5.8.4.1 & 5.8.2.6)
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