A masonry retaining wall $4\mathrm{.}70m$ high constructed to retain a cohesionless backfill having an angle of internal resistance as $24,$ bulk unit weight of $16\mathrm{.}9k\frac{N}{m^3}$ above the water table and saturated unit weight of $18\mathrm{.}81k\frac{N}{m^3}.$ The water table observed at a distance of $80cms$ from the natural ground level. Calculate the resultant passive earth pressure per meter length of wall. Draw labeled EPDs.

$=24$