9. A 4.5 m saturated clay layer (two-way drainage) subjected to surcharge loading underwent 90% primary consolidation in 180 days. a) Find the coefficient of consolidation of the clay for the pressure range. b) How long will it take for a 19-mm-thick clay specimen to undergo 65% coefficient of consolidation of the clay for the pressure range. c) How long will it take for a 19-mm-thick clay specimen to undergo 65% consolidation in a laboratory test?

The vertical displacement of the structural foundation due to the loading from the superstructure is known as settlement. It is due to the reduction of air voids present in the soil. The amount of vertical displacement depends on the bearing capacity of …