\[\sigma_{1f}=2 C \tan \left(45^{\circ} \frac{\phi}{2}\right), \text { for } C-\phi \text { soil }\]
\[\sigma_{1f}=2 C, \text { for } C-\text {soil }\]
\[\text { \tau}={S}={C}=\frac{q_{u}}{2}, for clay's or c-soil\]
\[\text S_{t}=\frac{\left(q_{u}\right)_{\text {undisturbed}}}{\left(q_{u}\right)_{\text {remolded}}}\]
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