The time factor for a doubly drained clay layer
undergoingconsolidation is 0.2
a. what is the degree of consolidation (uz) at z/h=0.25,
0.5,and 0.75
b. if the final consolidation settlement is expected to be
1.0m, how much settlement has occurred when the time factor is 0.2
andwhen it is 0.7?

Answer with Explanation:

Assuming that the degree of consolidation is less than 60% the relation between time factor and the degree of consolidation is

Solving for 'U' we get

Since our assumption is correct thus we conclude that degree of consolidation is 50.46%

The consolidation at different level's is obtained from the attached graph corresponding to Tv = 0.2

i) = 71% consolidation

ii) = 45% consolidation

iii) = 30% consolidation

Part b)

The degree of consolidation is given by

Thus a settlement of 50.46 centimeters has occurred

For time factor 0.7, U is given by

thus consolidation of 85.59 % has occured if time factor is 0.7

The degree of consolidation is given by

1

explanation: