Question Two

a$)$ A square footing is $1\mathrm{.}81\mathrm{.}8m$ with a $0\mathrm{.}40\mathrm{.}4m$ square column. It is loaded with an axial load of $1800$ kN and $M_x=450kNm$;$M_y=360kNm.$ A series of direct shear tests were conducted on an undisturbed sample of soil obtained from a depth of $1\mathrm{.}0$ m at site, each test was carried out till the sample failed. The following results were obtained.

$\backslash$table$[[$Sample No$,$Normal Stress $()kPa,$Shear Stress $()kPa$