Problem 3.5 • A layer of sand extends from ground level to a depth of 9 m and overlies a layer of clay, of very low permeability, 6 m thick. The water table is 6 m below the surface of the sand. |The saturated unit weight of the sand is 19 kN/m³ and that of the clay 20 kN/m³; the unit weight of the sand above the water table is 16 kN/m³. Over a short period of time the water table rises by 3 m, and is expected to remain permanently at this new level. Determine the effective vertical stress at depths of 8 and 12 m below ground level (a) immediately after the rise of the water table, and (b) several years after the rise of the water table.

Problem 3.5 • A layer of sand extends from ground level to a depth of 9 m and overlies a layer of clay, of very low permeability, 6 m thick. The water table is 6 m below the surface of the sand. |The saturated unit weight of the sand is 19 kN/m³ and that of the clay 20 kN/m³; the unit weight of the sand above the water table is 16 kN/m³. Over a short period of time the water table rises by 3 m, and is expected to remain permanently at this new level. Determine the effective vertical stress at depths of 8 and 12 m below ground level (a) immediately after the rise of the water table, and (b) several years after the rise of the water table.

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 9.8P

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