A 10 m depth of sand overlies a clay layer 8 m thick, below which is a further depth of sand. For the clay, mv =0 83m2 MN and cv =4 4m2 /year. Water table is at the surface level but is to be lowered permanently by 4 m, the initial lowering taking place over a period of 40 weeks. Calculate the final settlement due to consolidationof the clay, assuming no change in the weight of sand and the settlement 2 years after the start of lowering.

A 10 m depth of sand overlies a clay layer 8 m thick, below which is a further depth of sand. For the clay, mv =0 83m2 MN and cv =4 4m2 /year. Water table is at the surface level but is to be lowered permanently by 4 m, the initial lowering taking place over a period of 40 weeks. Calculate the final settlement due to consolidationof the clay, assuming no change in the weight of sand and the settlement 2 years after the start of lowering.

Principles of Foundation Engineering (MindTap Course List)

9th Edition

ISBN:9781337705028

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter2: Geotechnical Properties Of Soil

Section: Chapter Questions

Problem 2.8P

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A 10 m depth of sand overlies an § m layer of clay, below which is a further depth of sand. For the clay, m, = 0.83 m?/MN and cv = 4.4 m/year, The water table is at surface level but is to be lowered permanently by 4 m, the initial lowering taking place over a period of 40 weeks. Calculate the final settlement due to consolidation of the clay, assuming no change in the weight of the sand. and the settlement two years afte the start of lowering.
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