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A water tank with diameter 25m and height 11m is to be filled with water to...

A water tank with diameter 25m and height 11m is to be filled with water to test load the foundation. [Assume stress distribution under a tank on an elastic material].

The water table in the ground is at a depth of 2.4m. The soil has a unit weight of 17kN/m3 above and19kN/m3 below the water table. Use γw = 10kN/m3.

Q. At what depth below the center line of the tank (m) is the increment in principal stress equal to 10% of the original effective vertical stress.

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