The value of vertical stress due to point load of 60 kN at a radial distance 2 m from the axis of load at a depth of 5 m is in kN/m2. (Answer correct upto two decimal place). [Use Westergaard equation]
A
1.5
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B
2.5
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C
0.5
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D
3.5
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Solution
The correct option is C 0.5 σz=Qπz2⎡⎢
⎢
⎢⎣11+2(rz)2⎤⎥
⎥
⎥⎦3/2(Westerguard equation)