Q$1.$ For a given soil element shown in the Figure $1$:

Use sign convention of soil mechanics to determine normal stress, and shear

stress on planes $AB,BC,CD,$ and $AD($provide the subscript$($s$)$ for each stress

component$)$;

Draw the Mohr's circle in Figure $2,$ and describe the drawing procedures

$($Straight edge and compass are required to complete the drawings$)$;

Using Rotation Method to determine the normal and shear stress on the inclined

plane EF via the Mohr's circle $($no calculations are needed$)$ and describe the

drawing procedures $($Straight edge and compass are required to complete the

drawings$).$