Question: 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

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% consolidation in a laboratory test?

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