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A grain silo is supported on a 20.0 by 50.0 m mat foundation. The total weight...

A grain silo is supported on a 20.0 by 50.0 m mat foundation. The total weight of the silo and the mat is 180,000 kN. Compute the induced vertical stress in the soil at a point 15.0 m below the center of the mat using

a) the Boussinesq’s method,

b) the approximate (1:2) method, and

c) the chart solution

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