According to the soil profile figure below, there is a piezometer tube at point c which...
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According to the soil profile figure below, there is a piezometer tube at point c which reads 3 m above the N.G.S. The ground water table level is 2 m above N.G.S and the thickness of each sandy layer is 4 m; 1) Calculate the total stress, effective stress and pore water pressure at points a, b, c and d, later, plot in scale the stresses from point a to point d. 2) If the ground water table dropped 5 m under the N.G.S, and also the piezometer reading is dropped 2 m below the N.G.S. Calculate the total stress, effective stress and pore water pressure at points a, b, c and d. 3) Calculate the increase in vertical stress Ao, by the approximate method under the uniform load of 200 kN/m² for a rectangular load area (4 m × 8 m), at a depth of 15 m below the N.G.S. a Sand1 b Sand2 C Sand3 N.G.S. Ydry 16 kN/m³ Ysat=18 kN/m³ Ydry 17 kN/m³ Ysat 20 kN/m³ Ydry 19 kN/m³ Ysat 21 kN/m³ According to the soil profile figure below, there is a piezometer tube at point c which reads 3 m above the N.G.S. The ground water table level is 2 m above N.G.S and the thickness of each sandy layer is 4 m; 1) Calculate the total stress, effective stress and pore water pressure at points a, b, c and d, later, plot in scale the stresses from point a to point d. 2) If the ground water table dropped 5 m under the N.G.S, and also the piezometer reading is dropped 2 m below the N.G.S. Calculate the total stress, effective stress and pore water pressure at points a, b, c and d. 3) Calculate the increase in vertical stress Ao, by the approximate method under the uniform load of 200 kN/m² for a rectangular load area (4 m × 8 m), at a depth of 15 m below the N.G.S. a Sand1 b Sand2 C Sand3 N.G.S. Ydry 16 kN/m³ Ysat=18 kN/m³ Ydry 17 kN/m³ Ysat 20 kN/m³ Ydry 19 kN/m³ Ysat 21 kN/m³
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1 Stresses at points a b c d original conditions Point a 0m depth Total stress t Density x Depth Dry density of Sand1 x 0m 16 kNm3 x 0m 0 kNm2 Effecti... View the full answer
Related Book For
An Introduction to Geotechnical Engineering
ISBN: 978-0132496346
2nd edition
Authors: Robert D. Holtz, William D. Kovacs, Thomas C. Sheahan
Posted Date:
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