Q$2($a$)$ List THREE $(3)$ types of laboratory tests and THREE $(3)$ types of field tests to

determine the shear strength parameters.

$($b$)$ Three samples of a soil were tested under Consolidated Undrained conditions with

measurement of pore water pressure. The confining pressures and the conditions at

failure observed are shown in Table $2($b$).$

Table $2($b$)$: Triaxial test data output

$($i$)$ Plot Mohr's circles in term of total stress and effective stress on the same graph.

$($ii$)$ Determine the parameters of shear strength in term of total stress $($c and $)$ and

effective stress $($c$\text{'}$ and ${}^{\text{'}})$

$($iii$)$ Comment on the results obtained in Q$1($d$)($ii$)$ in term of cohesion and angle

of friction $()$