Answer to Question #196909 in Civil and Environmental Engineering for Kelly

Question #196909

A raft foundation subjects its supporting soil to a uniform pressure of 300 kPa. The dimensions of the raft are 6.1m by 15.25m. Determine the vertical stress due to the raft at a depth of 4.58m below it at the central points of the long edges.


1
Expert's answer
2021-05-24T18:22:01-0400


Influence factors for the vertical stress beneath the corner of a rectangular foundation (after

Fadum, 1948).


i) at the center of the raft

z= 4.58 m


m=


n= = 1.67 obtained from the graph.





ii) at the central point of long edges.








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