(b) A layer of saturated clay with 4 m thick is overlain by sand with thickness of 5 m deep, the water table being 3 m below the surface, as shown in Figure BELOW. The saturated unit weights of the clay and sand are 19 and 20 kN/m³, respectively; above the water table the (dry) unit weight of the sand is 17 kN/m³. 3 m 5 m Sand B Clay 4 m (i) Plot the diagrams of total vertical stress, pore water pressure and effective vertical stress against depth (ii) calculate the total stress, pore water pressure, and effective stress at points A, B and C.

Structural Analysis
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Chapter2: Loads On Structures
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(b) A layer of saturated clay with 4 m thick is overlain by sand with thickness of 5 m deep, the water table
being 3 m below the surface, as shown in Figure BELOW. The saturated unit weights of the clay and sand
are 19 and 20 kN/m³, respectively; above the water table the (dry) unit weight of the sand is 17 kN/m².
3 m
5 m
Sand
Clay
4 m
(i) Plot the diagrams of total vertical stress, pore water pressure and effective vertical stress against depth
(ii) calculate the total stress, pore water pressure, and effective stress at points A, B and C.
Transcribed Image Text:(b) A layer of saturated clay with 4 m thick is overlain by sand with thickness of 5 m deep, the water table being 3 m below the surface, as shown in Figure BELOW. The saturated unit weights of the clay and sand are 19 and 20 kN/m³, respectively; above the water table the (dry) unit weight of the sand is 17 kN/m². 3 m 5 m Sand Clay 4 m (i) Plot the diagrams of total vertical stress, pore water pressure and effective vertical stress against depth (ii) calculate the total stress, pore water pressure, and effective stress at points A, B and C.
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