Problem #$4$: A $15ft$ high vertical wall retains an overconsolidated soil where OCR$=1\mathrm{.}5,c^{\text{'}}=0,{}^{\text{'}}=33,$ and $=115$ pcf$.$ Determine the magnitude and location of the thrust on the wall, assuming that the soil is at rest.

Problem #$5$: In Problem #$4,$ if the entire soil behind the wall is submerged with the water level at the ground surface, determine the magnitude and the location of the horizontal load on the wall, assuming the at$-$rest condition. Use ${}_{\text{s}\text{a}\text{t}}=127pcf.$