With reference to the soil
profile shown below, answer the following questions
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With reference to the soil
profile shown below, answer the following questions
Y=122 pcf, O'= 5°...
Problem 1 Ground Surface A soil profile is shown to the right. The groundwater table is...
Problem 1 Ground Surface A soil profile is shown to the right. The groundwater table is located 15 feet below ground. Calculate the total stress, pore water pressure and effective stress in the vertical and horizontal direction at points a, b, and c located Coarse Sand -120 lb/ft Ko 0.4 %at: 125 lb/ft3 a) 15, b) 40, and c) 58 feet below the ground surface. Stiff Clay = 110 lb/ft3 %at 115 lb/ft3 Ko= 1.3 58 Limestone Bedrock
Problem 1 (6 Points) Refer to the soil profile in Fig. 1. Plot separate diagrams for...
Problem 1 (6 Points) Refer to the soil profile in Fig. 1. Plot separate diagrams for total stress (ov), water pressure (us) and effective stress (o'v) Ground Surface Ymoist-110 pcf Silty Sand 10 ft watery Fig. 1 y=112.4 pcf Clay 20 ft
(5 points) 6. A soil profile consists of 4 ft of organic soil (a 75 pe)...
(5 points) 6. A soil profile consists of 4 ft of organic soil (a 75 pe) over a uniform soft clay layer. For the clay y 120 pcf and, ?'/o 1.0 The water table is at the ground surface. For a clay element A, at the depth of 10 feet from the ground surface (6 feet into the soft clay) compute the following Assume a wide fill, thickness 7 feet, ? 105 pcf is placed over the surface of the...
5, A soil element inside a 20° natural soil slope carries total vertical stress (%) of...
5, A soil element inside a 20° natural soil slope carries total vertical stress (%) of 140 kPa, total horizontal stress (on) of 80 kPa and shear stress (Tvh) of 15 kPa Canticlockwise shear stress on vertical plane). The pore-water pressure (u) inside the element is 30 kPa. The critical state angle of friction of the soil is 30o and its undrained shear strength is 40 kPa. (a) Draw the Mohr's stress circles for this element in terms of total...
Q3 (35) A soil profile is shown in figure below. Calculate total stess, pore water pressure...
Q3 (35) A soil profile is shown in figure below. Calculate total stess, pore water pressure and effective stres at B, C, and D. Take unit weight of water 10 kN/m. Water level rise up 1.6om from the inital level. Caloulate change in effective stress at points D. 1.8 m and G 16.3 16 m Clay 29
4.Refer to the soil profile shown in Figure Question 1 (a) Determine the total stress, pore...
4.Refer to the soil profile shown in Figure Question 1 (a) Determine the total stress, pore water pressure, and effective stress at A, B, C, and D (b) If during the spring the water table rises above the ground surface by 15m calculate the effective stress at point D Dry sand;eo.55 G,-266 B Water table 3 m 1.5 mSand G,-2.66e 0.48 Clay w-34.78% G+ 2.74 5 m Figure Question 4
Problem (2) (12) For the concrete dam and soil profile shown in the Figure below, the...
Problem (2) (12) For the concrete dam and soil profile shown in the Figure below, the flow net is cons channel and 8 isted of 3 fNow rops, calculate: a) The rate of seepage under the dam in ft /sec/ft. b) Pore water pressure at points A, C, and D in Ib/ft. c) The uplift force in lb/ft at the base of the dam due to water pressure C use points C and D). 20
Question 8 (12) Given following properties for the soil in the figure below, Ya 110 lbf/ft3...
Question 8 (12) Given following properties for the soil in the figure below, Ya 110 lbf/ft3 Above the water table Yb 130 lbf/ft3 Below the water table C- 200 lbf/ ft .Knou Pore water pressarc Know total Stress 30° a) Compute the effective stress at the point D (bottom of the foundation) b) Compute the bearing capacity of the foundation using Terzaghi's bearing capacity equation and factors W 1000 lbf/ ft Water Table 4 |Page 20f
3. A) Estimate the profiles of vertical effective stresses for the following problem from the ground...
3. A) Estimate the profiles of vertical effective stresses for the following problem from the ground surface to 4.5 m depth (same soil unit). B) What would happen to the effective stress profile if the ground water table rises to the level of the ground surface? Compute the corresponding vertical profiles of total stress, pore water pressure and effective stress. C) What would happen to the effective stress profile if the water table moves 4.5 m above the ground surface??...
Problem 3b: Results from a CU Triaxial test are given below. a. Determine the total shear strength parameters of the soil. b. Determine the effective shear strength parameters of the soil c. Dete...
Problem 3b: Results from a CU Triaxial test are given below. a. Determine the total shear strength parameters of the soil. b. Determine the effective shear strength parameters of the soil c. Determine the long term shear strength of the soil at 20 ft depth. c. Determine the short term shear strength of the soil at 20ft depth. Assume y 115 pcf, Water table at 12 ft depth Sample 2 σ)" 15 psi OA- 18 psi u- 3 psi Sample...
Problem 1 Ground Surface A soil profile is shown to the right. The groundwater table is located 15 feet below ground. Calculate the total stress, pore water pressure and effective stress in the vertical and horizontal direction at points a, b, and c located Coarse Sand -120 lb/ft Ko 0.4 %at: 125 lb/ft3 a) 15, b) 40, and c) 58 feet below the ground surface. Stiff Clay = 110 lb/ft3 %at 115 lb/ft3 Ko= 1.3 58 Limestone Bedrock
Problem 1 (6 Points) Refer to the soil profile in Fig. 1. Plot separate diagrams for total stress (ov), water pressure (us) and effective stress (o'v) Ground Surface Ymoist-110 pcf Silty Sand 10 ft watery Fig. 1 y=112.4 pcf Clay 20 ft
(5 points) 6. A soil profile consists of 4 ft of organic soil (a 75 pe) over a uniform soft clay layer. For the clay y 120 pcf and, ?'/o 1.0 The water table is at the ground surface. For a clay element A, at the depth of 10 feet from the ground surface (6 feet into the soft clay) compute the following Assume a wide fill, thickness 7 feet, ? 105 pcf is placed over the surface of the...
5, A soil element inside a 20° natural soil slope carries total vertical stress (%) of 140 kPa, total horizontal stress (on) of 80 kPa and shear stress (Tvh) of 15 kPa Canticlockwise shear stress on vertical plane). The pore-water pressure (u) inside the element is 30 kPa. The critical state angle of friction of the soil is 30o and its undrained shear strength is 40 kPa. (a) Draw the Mohr's stress circles for this element in terms of total...
Q3 (35) A soil profile is shown in figure below. Calculate total stess, pore water pressure and effective stres at B, C, and D. Take unit weight of water 10 kN/m. Water level rise up 1.6om from the inital level. Caloulate change in effective stress at points D. 1.8 m and G 16.3 16 m Clay 29
4.Refer to the soil profile shown in Figure Question 1 (a) Determine the total stress, pore water pressure, and effective stress at A, B, C, and D (b) If during the spring the water table rises above the ground surface by 15m calculate the effective stress at point D Dry sand;eo.55 G,-266 B Water table 3 m 1.5 mSand G,-2.66e 0.48 Clay w-34.78% G+ 2.74 5 m Figure Question 4
Problem (2) (12) For the concrete dam and soil profile shown in the Figure below, the flow net is cons channel and 8 isted of 3 fNow rops, calculate: a) The rate of seepage under the dam in ft /sec/ft. b) Pore water pressure at points A, C, and D in Ib/ft. c) The uplift force in lb/ft at the base of the dam due to water pressure C use points C and D). 20
Question 8 (12) Given following properties for the soil in the figure below, Ya 110 lbf/ft3 Above the water table Yb 130 lbf/ft3 Below the water table C- 200 lbf/ ft .Knou Pore water pressarc Know total Stress 30° a) Compute the effective stress at the point D (bottom of the foundation) b) Compute the bearing capacity of the foundation using Terzaghi's bearing capacity equation and factors W 1000 lbf/ ft Water Table 4 |Page 20f
3. A) Estimate the profiles of vertical effective stresses for the following problem from the ground surface to 4.5 m depth (same soil unit). B) What would happen to the effective stress profile if the ground water table rises to the level of the ground surface? Compute the corresponding vertical profiles of total stress, pore water pressure and effective stress. C) What would happen to the effective stress profile if the water table moves 4.5 m above the ground surface??...
Problem 3b: Results from a CU Triaxial test are given below. a. Determine the total shear strength parameters of the soil. b. Determine the effective shear strength parameters of the soil c. Determine the long term shear strength of the soil at 20 ft depth. c. Determine the short term shear strength of the soil at 20ft depth. Assume y 115 pcf, Water table at 12 ft depth Sample 2 σ)" 15 psi OA- 18 psi u- 3 psi Sample...
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