Problem 4. A 20m thick submerged saturated clay layer has water content of 57%. The specific gravity ofthe solid particle is 2.84.1. Determine the density of the clay in kg/m².2. Determine the total vertical stress at the bottom of the clay layer in kpa.3. Determine the effective vertical stress at the bottom of the clay layer in kpa.Problem 5. A dense silt layer has the following properties.void ratio = 0.30eff. Diameter D10 = 10µmcapillary constant (c)=0.20 cm²Ground water level is 8.0m below the ground surface.1. Find the height of capillary rise in the silt.2. Find the vertical effective stress in kpa at 5m depth, assume y, = 26.5 kn/m²and that the soil abovethe capillary action rise and ground surface is partially saturated at 50%.3. Find the effective vertical stress at 10m depth assuming Ys = 26.5 kn/m²and that the soil above thecapillary action rise and ground surface is partially saturated at 50%. Problem 1. The water table in a certain deposit of soil is at a depth of 2m below the ground surface. Thesoil consists of clay up to depth of 4m from the ground and below which lies sand. The clay soil issaturated even above the water table:Clay strata: w = 30%, G, = 2.72Sandy Strata: w = 26%, G, = 2.641. Compute the total pressure.2. Compute the pore water pressure.3. Compute the effective stress pressure at a depth of 8m below the ground surface.Problem 2. A clay layer thick rests beneath a deposit of submerged sand 26ft thick. The top of the sandlocated 10ft below the surface of a lake. The saturated unit weight of the sand is 125 lb /ft and of the claylayer is 117 lb /ft?.1. Compute the total vertical pressure at the mid height of the clay layer.2. Compute the pore water pressure at the mid height of the clay layer.3. Compute the effective vertical pressure at the mid height of the clay layer.Problem 3. A 4m thick of clay is overlain by 4m thick of sand. The ground water table is 1m below thenatural grade line. Clay and sand have saturated unit weights of 19.5 and 17.3 kn/m³ respectively. Sandabove the water retains water content of 30%. LL and void ratio of clay are respectively 60% and 27.3%Specific gravity of sand solid is 2.7.1. Find the compression index.2. Find the moist unit weight of sand above the water table.3. Find the effective soil pressure at mid clay layer.

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Problem 4. A 20m thick submerged saturated clay layer has water content of 57%. The specific gravity of the solid particle is 2.84. 1. Determine the density of the clay in kg/m'. 2. Determine the total vertical stress at the bottom of the clay layer in kpa. 3. Determine the effective vertical stress at the bottom of the clay layer in kpa.

Problem 4. A 20m thick submerged saturated clay layer has water content of 57%. The specific gravity of the solid particle is 2.84. 1. Determine the density of the clay in kg/m'. 2. Determine the total vertical stress at the bottom of the clay layer in kpa. 3. Determine the effective vertical stress at the bottom of the clay layer in kpa.

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 9.20CTP

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