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Example 1: A UU test is carried out on a saturated normally consolidated clay sample at a confining pressure of
3 kg/cm^{2}.The deviator stress at failure is 1 kg/cm^{2}. (a) Determine its total stress strength parameters. (b) If another identical sample is tested at a confining pressure of 4 kg/cm^{2}, what will be the vertical axial stress at failure? Solution: (a) (b) 
