SOLVE USING COULOMBS METHOD

$17\mathrm{.}10$ A $12-$ft tall concrete wall with a vertical back is to be backfilled with a clean sand that has a unit weight of $126l\frac{b}{f}{t}^3,$ an effective cohesion of $0,$ and an effective friction angle of $36.$ The ground behind the wall will be inclined at a slope of $2$ horizontal to $1$ vertical. Using Rankine's method, compute the total normal and shear forces per foot acting on the back of the wall. Assume the wall moves sufficiently to develop the active condition in the soil.

$17\mathrm{.}13$ Repeat Problem $17\mathrm{.}10$ using Coulomb's method.

$17\mathrm{.}10$ A $12-$ft tall concrete wall with a vertical back is to be backfilled with a clean sand that has a unit weight of $126l\frac{b}{f}{t}^3,$ an effective cohesion of $0,$ and an effective friction angle of $36.$ The ground behind the wall will be inclined at a slope of $2$ horizontal to $1$ vertical. Using Rankine's method, compute the total normal and shear forces per foot acting on the back of the wall. Assume the wall moves sufficiently to develop the active condition in the soil.

$17\mathrm{.}13$ Repeat Problem $17\mathrm{.}10$ using Coulomb's method.