I am designing a raft foundation using finite element analysis software. I need to insert a value for the stiffness of the bedding material (ie the soil). Could anyone give me some advice on how I calculate this value? I have heard that it is the allowable bearing pressure divided by teh amount the raft will settle, (ie 150kN/m2 / 0.01m = 15000 kN/m3) Does this make sense to anyone?
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