Our office just recieved some interim updates to the AASHTO Manual for Condition Evaluation and the AASHTO Guide Specifications for LRFD Seismic Bridge Design. Historically interims have contained "replacement" pages to show the revised portions of the code. These most recent interims, to...
AASHTO LRFD seems to flip flop in their cantilever retaining wall figures (Section 3 and 11) showing the inclination of the resultand active pressure to be at angle beta (parallel to backfill slope) or at angle delta (wall friction). This confuses me a bit. I've also seen several figures...