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Find allowable load bearing capacity for 4x5 group piles 24m in length and inserted in clay...

Find allowable load bearing capacity for 4x5 group piles 24m in length and inserted in clay with cohesion of 90 KN/m2 and γ=20 KN/m3 . The water table is located at 28m below surface.

The piles are circular with diameter of 600mm each. Spacing between piles are all the same and 2200mm each. Use factor of safety 4

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