A clay layer 3m deep is sandwiched by a pervious material. The soil reaches 90% consolidation in 3 years. At another site, the same clay layer is bounded by imperious boundary at the bottom and sand at the top. The time (in years) taken by this layer to rech 90% settlement would be

A clay layer 3m deep is sandwiched by a pervious material. The soil re

1.	A clay layer 3m deep is sandwiched by a pervious material. The soil reaches 90% consolidation in 3 years. At another site, the same clay layer is bounded by imperious boundary at the bottom and sand at the top. The time (in years) taken by this layer to rech 90% settlement would be
A.	9
B.	21
C.	18
D.	12
E.	6
Answer» E. 6

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A clay layer 3m deep is sandwiched by a pervious material. The soil reaches 90% consolidation in 3 years. At another site, the same clay layer is bounded by imperious boundary at the bottom and sand at the top. The time (in years) taken by this layer to rech 90% settlement would be

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