A 12 m depth of sand layer has a dry unit weight of 18 kN/m' and submerged unit weight of 11 kN/m' overlies a 7 m layer of normally consolidated clay below which is an impermeable stratum. The properties of clay layer are (Gs= 2.76, w=40.5%, L.L= 48%, c, 1x10² cm²/sec). The water table was 5 m below natural ground surface. The average increase in pressure at the center of the clay layer is 120 kN/m² due to the weight of a building that constructed on ground surface. Determine: 1- The expected total primary consolidation settlement. 2- Time required for ultimate consolidation settlement. 3- Excess p.w.p at point located 1.75 m below the surface of clay layer after 6 months of applying loading. B

A 12 m depth of sand layer has a dry unit weight of 18 kN/m' and submerged unit weight of 11 kN/m' overlies a 7 m layer of normally consolidated clay below which is an impermeable stratum. The properties of clay layer are (Gs= 2.76, w=40.5%, L.L= 48%, c, 1x10² cm²/sec). The water table was 5 m below natural ground surface. The average increase in pressure at the center of the clay layer is 120 kN/m² due to the weight of a building that constructed on ground surface. Determine: 1- The expected total primary consolidation settlement. 2- Time required for ultimate consolidation settlement. 3- Excess p.w.p at point located 1.75 m below the surface of clay layer after 6 months of applying loading. B

Principles of Geotechnical Engineering (MindTap Course List)

9th Edition

ISBN:9781305970939

Author:Braja M. Das, Khaled Sobhan

Publisher:Braja M. Das, Khaled Sobhan

Chapter9: In Situ Stresses

Section: Chapter Questions

Problem 9.12P

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