Figure P4 shows a single drainage, compressible layer that is 16 ft thick below

Question

Figure P4 shows a single drainage, compressible layer that is 16 ft thick below a 4 ft sand layer. The water table is 2 ft below ground surface. A fill, 8 ft thick, is placed at the ground surface. The unit weight of the fill is 140 pcf. A piezometer is placed in the clay layer where its end is located 14 ft from the ground surface (10 ft into the clay layer). At 60 days after loading, the water level in the piezometer was measured to be 10 ft above ground surface. The total consolidation settlement of the layer is expected to be 8 in.

a. What is the pore pressure at depth 14 ft. prior to the placement of the fill and immediately after placing the fill?

b. Compute the degree of consolidation, Uz, at 14 ft depth 60 days after loading.

c. Determine CV of the soil in ft2/day.

d. How much settlement has occurred 100 days after loading?

Explanation / Answer

Wait I am solving , please dont rate any arbitrary answer !!!!! thanks

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