Problem $1$: A CU triaxial test was performed on a saturated glacial till sample $($Taken at depth $4$

$m)$ gives the data shown in the Table below. The initial height of the soil sample is $142\mathrm{.}3mm,$ the

initial diameter $=68\mathrm{.}71mm,$ confining pressure $=138$kPa $($see Hints given on the last page and

assume volume of sample does not change during shearing$).($a$)$ Plot the total deviotric stress $($y

axis$)$ vs$.$ axial strain $($x axis$)$; $($b$)$ Plot the pore pressure change vs$.$ vertical strain. Show plots of

requirements a and $b$ on the same page where $a$ at the top and $b$ below it$.x$ axis scale $($strain$)$ on

both plots should be the same. $($c$)$ Plot the total and effective stress Mohr circles at failure; $($d$)$

Determine the initial tangent modulus and the secant modulus at $5\%$ strain and at $50\%$ of the peak

stress; $($e$)$ Plot the total and effective stress path. $($f$)$ Plot the change of pore pressure parameter A

during shearing as a function of axial strain. Note: the given data include pore pressure $($not change

in pore pressure$).$ So to calculate the change in pore pressure subtract the value at the beginning

of shearing.