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A 3m deep sand layer has a specific gravity of 2.68 and a void ratiodf 0.60. Under this layer is a 2.5m deep clay profile with a specific gravity of 2.7 and a moisture content of 30%. The water table is observed at 1m below the ground surface. Determine the compression index of a normally consolidated clay after the surcharge of 75kPa. Clay is observed to have a void ratio of 0.40 after the surcharge. (Assume unit weight of soil profile above the clay layer is the same when the soil was not subjected to surcharge load).

A 3m deep sand layer has a specific gravity of 2.68 and a void ratiodf 0.60. Under this layer is a 2.5m deep clay profile with a specific gravity of 2.7 and a moisture content of 30%. The water table is observed at 1m below the ground surface. Determine the compression index of a normally consolidated clay after the surcharge of 75kPa. Clay is observed to have a void ratio of 0.40 after the surcharge. (Assume unit weight of soil profile above the clay layer is the same when the soil was not subjected to surcharge load).

Structural Analysis
Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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A 3m deep sand layer has a specific gravity of 2.68 and a void ratiodf 0.60. Under this layer is a 2.5m deep clay profile with a specific gravity of 2.7 and a moisture content of 30%. The water table is observed at 1m below the ground surface. Determine the compression index of a normally consolidated clay after the surcharge of 75kPa. Clay is observed to have a void ratio of 0.40 after the surcharge. (Assume unit weight of soil profile above the clay layer is the same when the soil was not subjected to surcharge load).
Transcribed Image Text:A 3m deep sand layer has a specific gravity of 2.68 and a void ratiodf 0.60. Under this layer is a 2.5m deep clay profile with a specific gravity of 2.7 and a moisture content of 30%. The water table is observed at 1m below the ground surface. Determine the compression index of a normally consolidated clay after the surcharge of 75kPa. Clay is observed to have a void ratio of 0.40 after the surcharge. (Assume unit weight of soil profile above the clay layer is the same when the soil was not subjected to surcharge load).
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