The results shown in Table $4\mathrm{.}2$ were obtained at failure in a series of triaxial tests on specimens of a saturated clay initially $38mm$ in diameter by $76mm$ long. Determine the values of the shear strength parameters with respect to $($a$)$ total stress and $($b$)$ effective stress.

Table $4\mathrm{.}2$

$\backslash$table$[[,$Type of test,$\backslash$table$[[$All$-$round pressure$],[(k\frac{N}{m^2})$