Problem $10\mathrm{.}15$ Study the bearing capacity of a square footing with width $B=2m$ placed

at a depth of $0\mathrm{.}75m$ in sand with $=20k\frac{N}{m^3}$ and $$ ranging from $35$ to $45.$ Consider

the water table to range from the ground surface to deep enough not to affect the

results of the calculations.