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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/$m^{2}$. The unit weight is 15 kN/m$^{3}$.

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: $L_{c}=3 \mathrm{~m}$ $d=0.25$ $c=18 \mathrm{kN} / \mathrm{m}^{2}$ $r=15 \mathrm{kN} / \mathrm{m}^{3}$ $\alpha=0.4$

Negative skin Friction, $F_{n}=\alpha \bar{C}_{u}\left(P_{a}\right) L_{c}$ $=0.4 \times 18 \times \pi \times 0.25 \times 3$ $=16.964 \mathrm{kN}$

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