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Settlement analysis

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Title: Samsung Enterprise Portal mySingle

Hi all

I am facing a problem regarding calculation of Safe bearing capacity of soil.

The depth i have considered for settlement of soil is 18 m, and i am getting an SBC of 11 ton, for 25 mm settlement  if i consider a depth of settlement 24m, my SBC comes out to be 9 ton, for same 25 mm settlement the size of my raftis 14X14 m*m .

I do understand that the depth of pressure bulb below the foundation is related to the size of footing, but i want to know if there exists a relation between the soil depth we have to consider for calculating the settlement and the size of the footing. I am using India Standards 8009 and it is silent in this regard. is their  some relation in any other code or in some reference book which i can use ?

Any help will be highly appreciated

 

Thank you

Mandeep Singh

Civil Engineer

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