A layer of clay of 6.5 m thickness is located between two sand layers. The coefficient of consolidation of the clay is 5 x 10-2 mm2/s. The fill material was placed over a very large area above the top sand layer. After 3 years, the consolidation due to the fill material at the middle of the clay layer will be

A layer of clay of 6.5 m thickness is located between two sand layers. The coefficient of consolidation of the clay is 5 x 10-2 mm2/s. The fill material was placed over a very large area above the top sand layer. After 3 years, the consolidation due to the fill material at the middle of the clay layer will be

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter9: Consolidation

Section: Chapter Questions

Problem 9.17P

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For normally consolidated clay layer in the field, the ff. values are given: Thickness of clay layer = 8.5ft, Void Ratio = 0.8; Compression Index = 0.28; Average effective pressure on the clay layer is 2650 lb/ft2; ∆σ = 970 lb/ft2; Secondary Compression index = 0.02. What is the total consolidation settlement of the clay layer five years after the completion of primary consolidation settlement? Time for completion of primary settlement = 1.5 years)
For a normally consolidated clay layer in the field, the following values are given:Thickness of clay layer = 8.5 ftVoid ratio ?? = 0.8Compression index ?? = 0.28Average effective pressure on the clay layer ??′ = 2650 lb ft2 ⁄∆?′ = 970 lb ft2 ⁄Secondary compression index ?? = 0.02What is the total consolidation settlement of the clay layer five years after the completionof primary consolidation settlement? (Note: Time for completion of primary settlement= 1.5 years.)
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