A consolidated$-$drained triaxial test on a sand yields the results:A consolidated$-$drained triaxial test on a normally consolidated clay yielded a friction angle, ${}^{\text{'}},$ of $28.$ If the all$-$around confining

pressure during the test was $153k\frac{N}{m^2},$ what was the major principal stress at failure?

$($Enter your answer to three significant figures.$)$

${}^{\text{'}}=,k\frac{N}{m^2}$

All$-$around confining pressure $={}_3=30l\frac{b}{i}{n}^2$

Added axial stress at failure $==92l\frac{b}{i}{n}^2$

Determine the shear stress parameters $($i$.$e$.,{}^{\text{'}}$ and $c^{\text{'}}).$

$($Enter your answers to three significant figures.$)$

$c^{\text{'}}=$

$l\frac{b}{i}{n}^2$

${}^{\text{'}}=$

$$