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A 0.5 m in diameter concrete pile is to be driven in clayey soil with following...

A 0.5 m in diameter concrete pile is to be driven in clayey soil with following properties :qu= 150 kn/m^2 and unit weight =180.10 kn/m^3 the design capacity of pile is 1000 kn .what should be the length of pile for fs=2
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