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The figure shows an element of soil at the interface between two dry sand layers on a a-32° slope...
2.) THE SOIL PROFILE SHOWS CONSISTS OF A LAYER OF DRY SAND 4m HICK WHICH OVERLIES...
2.) THE SOIL PROFILE SHOWS CONSISTS OF A LAYER OF DRY SAND 4m HICK WHICH OVERLIES A LAYER OF CLAY HAVING A THICKNESS OF 6m. GROUND WATER TABLE IS LOCATED AT THE INTERFACE OF THE SAND AND CLAY a.) COMPUTE THE EFFECTIVE STRESS AT THE BOTTOM OF THE CLAY LAYER b..) IF THE WATER TABLE RISES BY 2m, DETERMINE THE EFFECTIVE STRESS AT THE BOTTOM OF THE CLAY LAYER c.) IF THE WATER TABLE LOWERS BY 2m, DETERMINE THE EFFECTIVE...
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,...
(10 points) The major and minor principal stresses measured in a soil element are equal to 200 and 100 kPa, respectively. The soil is a dry sand with an internal friction angle of 32 degrees and a co...
(10 points) The major and minor principal stresses measured in a soil element are equal to 200 and 100 kPa, respectively. The soil is a dry sand with an internal friction angle of 32 degrees and a cohesion intercept of zero, when the soil will be loaded, additional compressive stress increments of ơs and ơs/4 will be superimposed on σι and σ, respectively. Determine the maximum possible value of ơs such that the shear strength will not be exceeded in...
1. (25 points) The soil profile at a site consists of a layer of fine sand...
1. (25 points) The soil profile at a site consists of a layer of fine sand 5 m thick above a layer of clay 4 m thick. Below the clay is a layer of impermeable rock. The groundwater table was observed at 2 m below ground level. The unit weight of the sand above and below the water table is 20 KN/m'. The water content of the clay is 25% and its dry unit weight is 15 KN/m'. The compression...
3. Shear Strength a. Plot the effective stress Mohr-Coulomb failure envelope for a soil with c'-500...
3. Shear Strength a. Plot the effective stress Mohr-Coulomb failure envelope for a soil with c'-500 b. A plane through a sample of this soil has an effective normal stress of c. Use a Mohr circle that touches the failure enve psf and 32 deg. acting on it. What is the shear strength of the soil on that plane? of 2000 psf to estimate the values of σ, and σ, at a state of shear failure 2000 psf lope at...
Problem 2. [2596] Figure 2 shows a soil profile. The uniformly distributed load on the ground...
Problem 2. [2596] Figure 2 shows a soil profile. The uniformly distributed load on the ground surface is (1) Estimate the primary consolidation settlement of the clay layer due to the application of Ap. (2) If the clay layer is preconsolidated and the average preconsolidation pressure is 80 kPa, what will be the expected primary consolidation settlement if the recompression index is C 0.2 x Cc? p 87 kPa 1 m Dry Sand Sand: Saturated Sand Dry Unit weight: 14.6...
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...
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...
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)...
(4). (8 pts). A soil profile is shown in below Figure. A uniformly distributed load Ao is applied at the surface of soil. Given the preconsolidation pressure is between swell index and compressio...
(4). (8 pts). A soil profile is shown in below Figure. A uniformly distributed load Ao is applied at the surface of soil. Given the preconsolidation pressure is between swell index and compression index is: C C/6. The unit weight of water is: -9.38 kN/m. If U-98% we regard it as a completion of primary consolidation. We have taken the clay sample and done the Atterberg Limit test. For the liquid limit test, the result is as below. Please ơ'-926...
2.) THE SOIL PROFILE SHOWS CONSISTS OF A LAYER OF DRY SAND 4m HICK WHICH OVERLIES A LAYER OF CLAY HAVING A THICKNESS OF 6m. GROUND WATER TABLE IS LOCATED AT THE INTERFACE OF THE SAND AND CLAY a.) COMPUTE THE EFFECTIVE STRESS AT THE BOTTOM OF THE CLAY LAYER b..) IF THE WATER TABLE RISES BY 2m, DETERMINE THE EFFECTIVE STRESS AT THE BOTTOM OF THE CLAY LAYER c.) IF THE WATER TABLE LOWERS BY 2m, DETERMINE THE EFFECTIVE...
(10 points) The major and minor principal stresses measured in a soil element are equal to 200 and 100 kPa, respectively. The soil is a dry sand with an internal friction angle of 32 degrees and a cohesion intercept of zero, when the soil will be loaded, additional compressive stress increments of ơs and ơs/4 will be superimposed on σι and σ, respectively. Determine the maximum possible value of ơs such that the shear strength will not be exceeded in...
1. (25 points) The soil profile at a site consists of a layer of fine sand 5 m thick above a layer of clay 4 m thick. Below the clay is a layer of impermeable rock. The groundwater table was observed at 2 m below ground level. The unit weight of the sand above and below the water table is 20 KN/m'. The water content of the clay is 25% and its dry unit weight is 15 KN/m'. The compression...
3. Shear Strength a. Plot the effective stress Mohr-Coulomb failure envelope for a soil with c'-500 b. A plane through a sample of this soil has an effective normal stress of c. Use a Mohr circle that touches the failure enve psf and 32 deg. acting on it. What is the shear strength of the soil on that plane? of 2000 psf to estimate the values of σ, and σ, at a state of shear failure 2000 psf lope at...
Problem 2. [2596] Figure 2 shows a soil profile. The uniformly distributed load on the ground surface is (1) Estimate the primary consolidation settlement of the clay layer due to the application of Ap. (2) If the clay layer is preconsolidated and the average preconsolidation pressure is 80 kPa, what will be the expected primary consolidation settlement if the recompression index is C 0.2 x Cc? p 87 kPa 1 m Dry Sand Sand: Saturated Sand Dry Unit weight: 14.6...
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...
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...
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)...
(4). (8 pts). A soil profile is shown in below Figure. A uniformly distributed load Ao is applied at the surface of soil. Given the preconsolidation pressure is between swell index and compression index is: C C/6. The unit weight of water is: -9.38 kN/m. If U-98% we regard it as a completion of primary consolidation. We have taken the clay sample and done the Atterberg Limit test. For the liquid limit test, the result is as below. Please ơ'-926...
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