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A circular pile penetrates through a filled up soil of 3m depth. The diameter is 250mm, unit cohesion of material is C=18kN/m2. The unit weight is 15 kN/m3.

Draw the section elevation and find the negative skin friction of pile. Given the adhesion factor as 0.4.

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pile Given Data: Lc=3 m d=0.25 c=18kN/m2 r=15kN/m3 α=0.4

Negative skin Friction, Fn=αˉCu(Pa)Lc =0.4×18×π×0.25×3 =16.964kN

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