A 4 m deep layer of normally consolidated clay with the water table at the surface is to be surcharged with a 3.0 m deep layer of gravel at a total...

A 4 m deep layer of normally consolidated clay with the water table at the surface is to be surcharged with a 3.0 m deep layer of gravel at a total unit weight of 22 kN/m3. Testing of the clay shows it has a moisture content of 40% and a total unit weight of 17 kN/m3. The water table is at the surface of the clay layer. Prior to surcharging a settlement plate is installed at the top of the clay to measure the settlement of the clay layer. 50 days after surcharging, the settlement plate shows 141.9