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Q1. A soil section is comprised of two layers with the following properties: soil...
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??...
For the soil strata, draw diagrams indicating the total stress, pore pressure and effective stress profiles...
For the soil strata, draw diagrams indicating the total stress, pore pressure and effective stress profiles to the bottom of clay layer. Fine sand has a thickness of 6 m (FST) with saturated unit weight of 18 kN/m2. Clay has a thickness of 8 m with saturated unit weight of 14 kN/m3 The water table is located at depth of 0.7 of fine sand thickness below the ground surface (i.e. depth=0.7*FST). Fine sand will sustain capillarity (suction). Assume the same...
Two undisturbed clay samples were taken from the middle of the overconsolidated and normally consolidated clay layers in the soil profile shown. The water table is at the top of the overconsolidated c...
Two undisturbed clay samples were taken from the middle of the
overconsolidated and normally consolidated clay layers in the soil
profile shown. The water table is at the top of the
overconsolidated clay layer. Consolidation tests were carried out
on the two samples and the results are summarized in the table
below. Assume that the bulk, dry, and saturated unit weights of the
sand are 16 kN/m3, 16 kN/m3 and 19
kN/m3, respectively. The specific gravity of the clay
soil...
Question 3: The following figure shows the soil profile at a site for a proposed building....
Question 3: The following figure shows the soil profile at a site for a proposed building. The soil is a homogeneous, poorly graded sand. At the soil element A (as shown in the figure), if the increase in lateral effective stress is 20% of the increase in vertical effective stress, the soil element will failure. The coefficient of lateral earth pressure at rest. Ko is 0.5. Assume all stresses are principal stresses. The upper 4 m soil shares the same...
Question 3: Calculate the total stress, effective stress, and pore water pressure at points A and...
Question 3: Calculate the total stress, effective stress, and pore water pressure at points A and B for the soil profile shown in Figure 2.0 below. Assume specifie gravity value as 2.70, void ratio as 0.7, degree of saturation as 0.85, and water content as 28% Point Load = 500 kN 2.0m GWT 4.5m OA 5.0m .B Figure 2.0 Question 4: If the groundwater in the figure 2.0 were (a) to drop 2m below the surface, (b) to rise 2...
Question 5 (Effective Stress & Consolidation) Figure 05 shows the soil profile of a construction site....
Question 5 (Effective Stress & Consolidation) Figure 05 shows the soil profile of a construction site. The water table is at the ground surface. Saturated unit weight of the sand is 18.8kN/m' and that of the clay is 19.6kN/m. Assume permeability of the clay is very low and unit weight of water is 10kN/m'. Water Table Sand 5m Clay 6m Figure 05 a) Determine the vertical total stress, pore water pressure, and vertical effective stress at the mid-height of the...
A site is underlain by two layers of normally consolidated clayey sand. The unit weights of...
A site is underlain by two layers of normally consolidated clayey sand. The unit weights of the top layer are 19 and 21 kN/m3 and the layer is 6 meters thick. The unit weights of the bottom layer are 20 and 22 kN/m3 and the layer is 8 meters thick. Below the bottom layer lies bedrock. The water table is located 2 meters below the ground surface. The top layer soil has an effective stress friction angle of 38 degrees,...
The figure shows an element of soil at the interface between two dry sand layers on a a-32° slope...
The figure shows an element of soil at the interface between two dry sand layers on a a-32° slope The interface is d=7 m below the ground surface and ror both sand layers the friction angle is φ=30, and Ko= 0.41 Assume that the shear stress is zero on both the vertical and horizontal planes. Va1 (dry unit weight of sand layer 1) - 19 kN/m3 Ys2 (dry unit weight of sand layer 2) 20 kN/m Dry Sand (Yai Dry...
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
Question 3c, how was the effective stress calculated for the depth of 2,6 and 10 m?...
Question 3c, how was the effective stress calculated for the
depth of 2,6 and 10 m? How was the Cp calculated? Is sigma 1 the
effective stress? What is sigma? Why d is 4?
1 3c In ε- Cp w-Σε disp ε. d do initial o Deformation depth d Strain (-) (m) 4 176.2 1.08 2 62 0.27 6 107 4 128.4 0.16 0.63 152 4 10 95.5 0.10 0.39 total 2.10 in 3) A 10 m wide and very...
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??...
For the soil strata, draw diagrams indicating the total stress, pore pressure and effective stress profiles to the bottom of clay layer. Fine sand has a thickness of 6 m (FST) with saturated unit weight of 18 kN/m2. Clay has a thickness of 8 m with saturated unit weight of 14 kN/m3 The water table is located at depth of 0.7 of fine sand thickness below the ground surface (i.e. depth=0.7*FST). Fine sand will sustain capillarity (suction). Assume the same...
Two undisturbed clay samples were taken from the middle of the
overconsolidated and normally consolidated clay layers in the soil
profile shown. The water table is at the top of the
overconsolidated clay layer. Consolidation tests were carried out
on the two samples and the results are summarized in the table
below. Assume that the bulk, dry, and saturated unit weights of the
sand are 16 kN/m3, 16 kN/m3 and 19
kN/m3, respectively. The specific gravity of the clay
soil...
Question 3: The following figure shows the soil profile at a site for a proposed building. The soil is a homogeneous, poorly graded sand. At the soil element A (as shown in the figure), if the increase in lateral effective stress is 20% of the increase in vertical effective stress, the soil element will failure. The coefficient of lateral earth pressure at rest. Ko is 0.5. Assume all stresses are principal stresses. The upper 4 m soil shares the same...
Question 3: Calculate the total stress, effective stress, and pore water pressure at points A and B for the soil profile shown in Figure 2.0 below. Assume specifie gravity value as 2.70, void ratio as 0.7, degree of saturation as 0.85, and water content as 28% Point Load = 500 kN 2.0m GWT 4.5m OA 5.0m .B Figure 2.0 Question 4: If the groundwater in the figure 2.0 were (a) to drop 2m below the surface, (b) to rise 2...
Question 5 (Effective Stress & Consolidation) Figure 05 shows the soil profile of a construction site. The water table is at the ground surface. Saturated unit weight of the sand is 18.8kN/m' and that of the clay is 19.6kN/m. Assume permeability of the clay is very low and unit weight of water is 10kN/m'. Water Table Sand 5m Clay 6m Figure 05 a) Determine the vertical total stress, pore water pressure, and vertical effective stress at the mid-height of the...
The figure shows an element of soil at the interface between two dry sand layers on a a-32° slope The interface is d=7 m below the ground surface and ror both sand layers the friction angle is φ=30, and Ko= 0.41 Assume that the shear stress is zero on both the vertical and horizontal planes. Va1 (dry unit weight of sand layer 1) - 19 kN/m3 Ys2 (dry unit weight of sand layer 2) 20 kN/m Dry Sand (Yai Dry...
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
Question 3c, how was the effective stress calculated for the
depth of 2,6 and 10 m? How was the Cp calculated? Is sigma 1 the
effective stress? What is sigma? Why d is 4?
1 3c In ε- Cp w-Σε disp ε. d do initial o Deformation depth d Strain (-) (m) 4 176.2 1.08 2 62 0.27 6 107 4 128.4 0.16 0.63 152 4 10 95.5 0.10 0.39 total 2.10 in 3) A 10 m wide and very...
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