$9,$ The punching shear failure in shallow foundations:

Select one:

a$.$ Can not be solved by bearing capacity equations.

b$.$ Happens in very loose soil.

c$.$ Must be avoided.

d$.$ All of the above.

A single foundation of $23m$ is subjected to vertical load, $Q=1000KN$ and bending moment,

$M=100KN.m.$ The minimum pressure $q_{\text{m}\text{i}\text{n}}$ under the footing is:

Select one:

a$.166\mathrm{.}7K\frac{n}{m^2}$

b$.216\mathrm{.}7K\frac{n}{m^2}$

c$.350K\frac{n}{m^2}$

d$.116\mathrm{.}7K\frac{n}{m^2}$