$3\mathrm{.}59$ A high gravity wall with a height of five feet, six inches is used to contain a soil with an equivalent fluid density of $30$ pcf$.$ If concrete has a density of $150$ pcf$,$ determine the wall's factor of safety against overturning. Does the bearing pressure remain within the allowable limit$?$

$3\mathrm{.}60$ An L$-$shaped cantilever retaining wall constructed of reinforced concrete, with a density of $150$ pcf$,$ is eight feet tall from the base to the top of the soil. Assuming a soil density of $120$ pcf and an equivalent fluid density of $40$ pcf$,$ determine the overturning stability of the wall. Check the bearing pressure beneath the toe at point $A.$

$3\mathrm{.}61$ Using the same wall configuration as in Problem $3\mathrm{.}60,$ determine the wall stability if the wall stem is projected to the opposite side with no soil above it$.$ Check the bearing pressure.