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In the middle of Boston Harbor, the soil surface (also known as the 'mudline') is 40...
calculate the value of effective horizontal earth pressure at the mid-depth of the Ted Williams Tunnel...
calculate the value of effective horizontal earth pressure at the mid-depth of the Ted Williams Tunnel under Boston Harbor. The tunnel is 40 ft high, so the mid-depth is 20 ft below the tunnel top. The total unit weight of soil = 122pcf first, determine both the total and effective vertical stress at this depth
Homework #10 A soil exploration result of a site is shown in the following figure. A...
Homework #10 A soil exploration result of a site is shown in the following figure. A building is to be constructed at that site. First, it has been proposed to raise the elevation of the ground by filling the site with 10 ft thick compacted soil at an area of 25 ft x 25 ft. The unit weight of the compacted moist soil was 120 pcf. The foundation of proposed building was constructed at the center of the compaction area...
15. Your company was just awarded a project to construct a new building within about 20-ft...
15. Your company was just awarded a project to construct a new building within about 20-ft of an existing building NOT owned by your client. You know that the neighboring building has a foundation consisting of footings that are 15-ft deep. Your project will have footings that are 10-ft deep. Soil borings from the site indicate a soil condition consisting of sandy clay with a unit weight (Y) of 120-pcf to a depth of 10-ft below grade The second soil...
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 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
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
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...
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...
With reference to the soil profile shown below, answer the following questions Y=122 pcf, O'= 5°...
With reference to the soil
profile shown below, answer the following questions
Y=122 pcf, O'= 5° 10 ft Yat-110 pcf, 0 = 10° 10 ft 10 A Ya 113 pcf, 0 = 15° Bedrock A) What is the pore water pressure at Point B? (5 points) B) What is the total stress at Point B? (5 points) C) What is the effective stress at Point A? (5 points) D) What is the shear strength at Point A? (5 points)
The depth of water in a lake is 4 m. The soil at the bottom of...
The depth of water in a lake is 4 m. The soil at the bottom of the lake consists of sandy clay. The water content of the soil was determined to be 25.0%. The specific gravity of the soil grains is 2.70. Determine the void ratio and the unit weight of the soil. What would be the total stress, effective stress, and pore water pressure at the 5 m depth into the bottom of the lake? 2.11
Homework #10 A soil exploration result of a site is shown in the following figure. A building is to be constructed at that site. First, it has been proposed to raise the elevation of the ground by filling the site with 10 ft thick compacted soil at an area of 25 ft x 25 ft. The unit weight of the compacted moist soil was 120 pcf. The foundation of proposed building was constructed at the center of the compaction area...
15. Your company was just awarded a project to construct a new building within about 20-ft of an existing building NOT owned by your client. You know that the neighboring building has a foundation consisting of footings that are 15-ft deep. Your project will have footings that are 10-ft deep. Soil borings from the site indicate a soil condition consisting of sandy clay with a unit weight (Y) of 120-pcf to a depth of 10-ft below grade The second soil...
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 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
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
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...
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...
With reference to the soil
profile shown below, answer the following questions
Y=122 pcf, O'= 5° 10 ft Yat-110 pcf, 0 = 10° 10 ft 10 A Ya 113 pcf, 0 = 15° Bedrock A) What is the pore water pressure at Point B? (5 points) B) What is the total stress at Point B? (5 points) C) What is the effective stress at Point A? (5 points) D) What is the shear strength at Point A? (5 points)
The depth of water in a lake is 4 m. The soil at the bottom of the lake consists of sandy clay. The water content of the soil was determined to be 25.0%. The specific gravity of the soil grains is 2.70. Determine the void ratio and the unit weight of the soil. What would be the total stress, effective stress, and pore water pressure at the 5 m depth into the bottom of the lake? 2.11
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