DESIGN OF A RAFT FOUNDATION FOR A TWO STOREY STRUCTURE USING STAAD PRO (PART 1)

[@musamorgan497]

I like this method. Thank you for sharing. Although I can't understand how you translated the results from the reaction and moments at the supports of the superstructure to be nodal loads on columns in this Mat structure

[@goldgateengineering]

Simple, the moments and forces from the superstructure corresponding to the nodes shall be exported from staad using the reaction list...these are the forces that shall be applied at the corresponding columns of the raft foundation.

[@omoniyieni-ibukun9168]

Nice video. You did not mention how you modelled the soil pressure

[@goldgateengineering]

Thanks for dropping a comment. The soil pressure is not modelled in the course of analysis, rather the soil restraint which is based on Wrinkler's theory. The results of the analysis will provide the contact earth pressure which shall be reported by staad

[@sikiruyusuff1246]

Ok, thanks for the good work. What about the support assignment to the raft beam, this is not mentioned in your course?

[@goldgateengineering]

@@sikiruyusuff1246 The same same support spring for the raft slab is applied to the corresponding beam bounding the slab..The load transfer mechanism is from the raft slab unto the raft beams via the contact earth pressure distribution beneath the raft