A clay specimen was tested in the laboratory consolidation device, which had 25.4 mm (1 inch) thick and only the top boundary was drained. 90 % consolidation time on the specimen was obtained as 2.2 hours. Determine: a) Time for 50 % consolidation in the field of this soil with 9.6 m thick with both top and bottom layers are drained. b) Time for 90 % consolidation in the field of this soil with 9.6 m thick with both top and bottom layers are drained. c) For the same field condition above, at end of one year after the placement of load, how much primary consolidation settlement occurs relative to its final amount of the settlement? d) The same question in (c), but at the end of five years.
A clay specimen was tested in the laboratory consolidation device, which had 25.4 mm (1 inch) thick and only the top boundary was drained. 90 % consolidation time on the specimen was obtained as 2.2 hours. Determine:
a) Time for 50 % consolidation in the field of this soil with 9.6 m thick with both top and bottom layers are drained.
b) Time for 90 % consolidation in the field of this soil with 9.6 m thick with both top and bottom layers are drained.
c) For the same field condition above, at end of one year after the placement of load, how much primary consolidation settlement occurs relative to its final amount of the settlement?
d) The same question in (c), but at the end of five years.
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