A saturated clay sample with sample dimensions of D$=(3$ cm and H$=(6\mathrm{.}0)$ cm with three undrained

axial tests were performed. $100$ kPa cell pressure test resulted in $(7)$ mm axial

deformation and collapsed under a load of $(130$ N$.$ The second experiment was conducted under $200$ kPa

and collapsed with a deformation of $(9)$ mm under a load of $(190$ N$.$ Shear strength of the soil

parameters using two different collapse criteria. In case the specimen is made below $150$ kPa

Find the deviatoric stress at which it will collapse.