A concrete tank structure is constructed below ground level for a large commercial swimming pool in an area where dense granular soil exists (20 kN/m 3 wet unit weight). The diving board end of the...

A concrete tank structure is constructed below ground level for a large commercial swimming pool in an area where dense granular soil exists (20 kN/m³
wet unit weight). The diving board end of the tank-pool is 6 m deep (below the ground surface). For the design, it is assumed that the groundwater table could rise close to the ground surface at various times. For the condition where the pool is empty, estimate the total lateral pressures (due to soil and to water) acting against the exterior side of the end wall at points 2 m, 4 m, and 6 m below the ground surface for the high water table condition. Assume the submerged unit weight for the soil is half the indicated unit weight (the given unit weight is a wet but not saturated unit weight).