A frictionless wall shown in Figure Q4 is retaining a saturated soil during a foundation excavation. Neglect seepage effects. Yar = 21 kN/m Ø' = 28° 3m 5m Yut = 24 kN/m? Ø' - 31° Base Figure Q4 Calculate the active lateral earth pressure distribution with depth. Calculate the magnitude the active forces.

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