Will ron9876 or any one refer the ACI code Clause No. that discourages the use of equivalent frame for soil loading. If it is correct then FEM is the only choice available.
David Atkins, if we find bearing pressure correctly and then use its max value under the foundation to design the entire mat considering uniform bearing pressure (selecting max.value of pressure) as suggested by par060, would it be right. par060 is requested for any reference for above...
Thankz to u all for comments,as suggested by Dave Atkins & par060, finding e and design mat for P & M means that the pressure would be different at the four corners of mat, and is it then required to design the mat for uniformly varying pressure!
Alternatively is it acceptable under any code or...
Thankz, Dave Atkins for the valuable information. I would like to further know that the bearing pressure at the four corners would not be the same due to eccentricity of loading. Do we assume the loads to be concentric! If not, then flat plate would have to be designed for linearly varying...
I would like that any experienced practicing structural engineer may please describe the steps involved and method of designing of raft or mat foundation, describing any useful hints and valuable information.
