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For the soil strata, draw diagrams indicating the total stress, pore pressure and effective stress profiles...
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...
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...
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 4: a) Calculate the total overburden, effective stress and pore pressure distribution for the soil...
Problem 4: a) Calculate the total overburden, effective stress and pore pressure distribution for the soil profile below. Neglect the surcharge for this analysis. Draw out all pressure profiles in a neat manner using a ruler. NO sketches and sloppy drawings permitted. b) Calculate the change in pressure if the water table rises to the interface of the clayey/sandy soil layers. You may show your results graphically or report the change in pressures along with the new pressures at the...
P3/4/5 Problem 3 Plot the variation of total stress, pore water pressure, and effective stress with...
P3/4/5
Problem 3 Plot the variation of total stress, pore water pressure, and effective stress with depth for the sand and clay layers shown in a figure below. Given: Hi-6m and H-4m. Dry sand 0.65 -2.66 Groand water table -0.9 G,-2.73 Problem 4 Refer to a figure below in which there is water seepage. Gven: H-1.5 t and H- 4.5 t h-1.75 f, and 122 Ib/t a. Calculate the total stress, pore watcr pressure, and effective stress at C(z-2 n)...
4. (10 pts) The soil profiles at a site is as follows (from the ground surface down); 5 m of very...
4. (10 pts) The soil profiles at a site is as follows (from the ground surface down); 5 m of very dense, saturated sand (saturated unit weight- 19.5 kN/m) 8 m of normally consolidated clay ( 7.5 kN/m, Ce-0.5) 15 m of clay (7'-80 kNan', σ'p-250 kN/m. (σ'max), Ce-0.4, Cer : 0.04). A layer of fill, 15m deep (y = 19 kN/m) will be added to the top of this profile. The water table is originally at the ground surface-...
Question 2 The soil profile at a level site consists of a 3-m thick layer of...
Question 2 The soil profile at a level site consists of a 3-m thick layer of sandy clay, overlaying an 8-m thick layer of loose sand, overlaying stiff gravelly clays that extend to depths greater than 20 m. The water table is at a depth of 2 m and the ground water is initially hydrostatic. The total unit weight of the upper sandy clay, above or below the water table, is 18 kN/m3. The total unit weight of the loose...
2. A future development site is to be preloaded with a 310 kPa surface surcharge to reduce potent...
2. A future development site is to be preloaded with a 310 kPa surface surcharge to reduce potential settlements in a 12.5-m thick soft clay layer. The soft clay is overlain by a 3-m thick sand layer and underlain by permeable bedrock. The groundwater table is at the sand-clay interface. A sample of the soft clay was extracted from a depth of 9 m and a 1D consolidation and compression test was conducted. Compression data obtained from the test are...
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...
A 2-m thick of compacted soil of unit weight 20 kN/m3 will be placed on the top of the ground surface. Δσ y...
A 2-m thick of compacted soil of unit weight 20 kN/m3 will be placed on the top of the ground surface. Δσ y 14.0 kN/m3 3.0 m Sand Y 17.5 kN/m3 2.0 m 3.0m A Soft clay y= 13.5 kN/m3 6.0 m Medium clay y=15.0 kN/m3 B 4.0 m Bedrock a) Before placing the compacted soil, what are the overconsolidation ratios (OCR) for point A and B? b) When placing the compacted soil, what external load Ag would be? c)...
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...
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...
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 4: a) Calculate the total overburden, effective stress and pore pressure distribution for the soil profile below. Neglect the surcharge for this analysis. Draw out all pressure profiles in a neat manner using a ruler. NO sketches and sloppy drawings permitted. b) Calculate the change in pressure if the water table rises to the interface of the clayey/sandy soil layers. You may show your results graphically or report the change in pressures along with the new pressures at the...
P3/4/5
Problem 3 Plot the variation of total stress, pore water pressure, and effective stress with depth for the sand and clay layers shown in a figure below. Given: Hi-6m and H-4m. Dry sand 0.65 -2.66 Groand water table -0.9 G,-2.73 Problem 4 Refer to a figure below in which there is water seepage. Gven: H-1.5 t and H- 4.5 t h-1.75 f, and 122 Ib/t a. Calculate the total stress, pore watcr pressure, and effective stress at C(z-2 n)...
4. (10 pts) The soil profiles at a site is as follows (from the ground surface down); 5 m of very dense, saturated sand (saturated unit weight- 19.5 kN/m) 8 m of normally consolidated clay ( 7.5 kN/m, Ce-0.5) 15 m of clay (7'-80 kNan', σ'p-250 kN/m. (σ'max), Ce-0.4, Cer : 0.04). A layer of fill, 15m deep (y = 19 kN/m) will be added to the top of this profile. The water table is originally at the ground surface-...
Question 2 The soil profile at a level site consists of a 3-m thick layer of sandy clay, overlaying an 8-m thick layer of loose sand, overlaying stiff gravelly clays that extend to depths greater than 20 m. The water table is at a depth of 2 m and the ground water is initially hydrostatic. The total unit weight of the upper sandy clay, above or below the water table, is 18 kN/m3. The total unit weight of the loose...
2. A future development site is to be preloaded with a 310 kPa surface surcharge to reduce potential settlements in a 12.5-m thick soft clay layer. The soft clay is overlain by a 3-m thick sand layer and underlain by permeable bedrock. The groundwater table is at the sand-clay interface. A sample of the soft clay was extracted from a depth of 9 m and a 1D consolidation and compression test was conducted. Compression data obtained from the test are...
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...
A 2-m thick of compacted soil of unit weight 20 kN/m3 will be placed on the top of the ground surface. Δσ y 14.0 kN/m3 3.0 m Sand Y 17.5 kN/m3 2.0 m 3.0m A Soft clay y= 13.5 kN/m3 6.0 m Medium clay y=15.0 kN/m3 B 4.0 m Bedrock a) Before placing the compacted soil, what are the overconsolidation ratios (OCR) for point A and B? b) When placing the compacted soil, what external load Ag would be? c)...
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