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Re: Modeling the subgrade modulus in Staad

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Program  called   ""  SAFE   ""   by CSI   www.csiberkeley.com

GSKWY(--nospam--at)aol.com wrote:
When you model the subgrade modulus (k)  in Staad or any other finite element programs, say to design a raft foundation,  does it treat "k" as a simple spring constant?

I.e.,  does it consider anything like coupling between adjacent springs due to lateral pressures,  does it adjust "k"  for its location with respect to the edge of the foundation, etc.

Or do you just put in a mesh size and a "k" value and have the program model in as an independent, identical spring at each node?

Is there any program that is particularly good for this type of modeling?

Gail Kelley


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