A rectangular foundation $(4\mathrm{.}5m3\mathrm{.}0m)$ for a bridge high$),$ placed $1\mathrm{.}5m$ below the soil surface.

The foundation has to support the bridge column with a vertical load of $3000kN$ with eccentricity of

$0\mathrm{.}25m,$ and the lateral load is $10kN($height of $5m).$

$1-$ Calculate the net allowable bearing capacity of the foundation shown in the figure below.

$2-$ Using a safety factor of $3\mathrm{.}0,$ check whether the footing is safe to carry the loads shown below or

not.

Note:

Draw neat sketches.

The water table at the foundation level.

ist. $=17\mathrm{.}5k\frac{N}{m^3}$

$38,c=100k\frac{N}{m^2},$

$=18\mathrm{.}5k\frac{N}{m^3},{}_s=0\mathrm{.}3$