QUESTION FIVE
TCL Company was contracted to construct Mapera House. The vertical loads to the foundation from the column were 350 kN. The foundation base was 2.5 m breadthx3 m length x 0.4 m deep. Thc excavation depth of the foundation was 3.75m from the ground surface, the soil profile consisted of three layers i.c (First layer of loose sand 4.25 m from the ground surface with y= 17kN/m, Ysat = 18.5 kN/m and second layer was clay of 6 m deep from the interface of sand and clay Yat = 20kN/m², w= 40 %, Gs = 2.63, liquid limit is 60 and the last layer was hardened rock of more than 30 m deep). The water table was 3.75 m below the ground surface. TCL company was asked to determine the actual settlement and advise on the findings. Divide the second layer in 3 layers for settlement calculations. Hint ( S_allowable =
3cm)