Advanced Soil Mechanics and Foundation Design (Unsaturated Soil Mechanics) The soil suction and degree of saturation...

 

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Advanced Soil Mechanics and Foundation Design (Unsaturated Soil Mechanics) The soil suction and degree of saturation relationship of a soil is as follows Suction (kPa) 0 10 20 30 40 60 100 200 Depth (m) Unit Weight Water Height (kN/m³) 18.97 18.78 19.61 19.40 19.51 19.56 0 1 2 3 4 5 Degree of Saturation (%) 100 98.6 86.7 79.7 74.7 67.7 58.9 46.9 0 1 2 3 4 5 (m) -3 -2 -1 0 1 Igneous Bock (a) A 5-m thick layer of the soil overlies an igneous rock. Groundwater level is at a depth of 3m below the surface of the soil. Determine the approximate water content, degree of saturation and void ratio at every Im depth throughout the thickness of the soil. Assume: G, = 2.65. 2 Depth (m) Unit Weight Water Height Suction, s (kPa) (kN/m³) 18.97 18.78 19.61 19.40 19.51 19.56 Y₁ = Y₁ = (m) -3 -2 -1 0 1 2 Suction (kPa) G₁(1+w), 1+e -Yw G,+S,.e 1+ e -Yw 3m (b) A roadway is to be constructed on the surface of this soil. The roadway consists of a 250 mm of concrete slab. Determine the distribution of the effective stress within the soil to a depth of 5 m. The unit weight of concrete is 25 kN/m³. Assume the pore air pressure (us) is almost zero. Yu Degree of Saturation (%) Void ratio Effective stress coefficient (x) Bill X.S Water content (%) 5m a' (kPa) Advanced Soil Mechanics and Foundation Design (Unsaturated Soil Mechanics) The soil suction and degree of saturation relationship of a soil is as follows Suction (kPa) 0 10 20 30 40 60 100 200 Depth (m) Unit Weight Water Height (kN/m³) 18.97 18.78 19.61 19.40 19.51 19.56 0 1 2 3 4 5 Degree of Saturation (%) 100 98.6 86.7 79.7 74.7 67.7 58.9 46.9 0 1 2 3 4 5 (m) -3 -2 -1 0 1 Igneous Bock (a) A 5-m thick layer of the soil overlies an igneous rock. Groundwater level is at a depth of 3m below the surface of the soil. Determine the approximate water content, degree of saturation and void ratio at every Im depth throughout the thickness of the soil. Assume: G, = 2.65. 2 Depth (m) Unit Weight Water Height Suction, s (kPa) (kN/m³) 18.97 18.78 19.61 19.40 19.51 19.56 Y₁ = Y₁ = (m) -3 -2 -1 0 1 2 Suction (kPa) G₁(1+w), 1+e -Yw G,+S,.e 1+ e -Yw 3m (b) A roadway is to be constructed on the surface of this soil. The roadway consists of a 250 mm of concrete slab. Determine the distribution of the effective stress within the soil to a depth of 5 m. The unit weight of concrete is 25 kN/m³. Assume the pore air pressure (us) is almost zero. Yu Degree of Saturation (%) Void ratio Effective stress coefficient (x) Bill X.S Water content (%) 5m a' (kPa)

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answers A calculations Water content WC G S ew 0 265 0 0w w 0 Degree of saturation Ds G S e G S Ds 2... View the full answer