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a. Define coefficient of Permeability. b. For the layered soil profile shown, estimate the ratio (kul...
A 12 m high retaining wa is built to retain a 3-layered soil profile shown in...
A 12 m high retaining wa is built to retain a 3-layered soil profile shown in Figure 2. The soil parameters are given in the figure. During raining season, ground water rises to interface between Soil 1 and Soil 2. Assume that there is no friction between the vertical wall and the soils. (i) Find the surface surcharge q that would just close the tensile crack on the ground surface at the active failure stage of the retaining wall. (5...
3. (5 pts) A non-homogeneous soil consisting of layers of soil with different permeabilities as shown...
3. (5 pts) A non-homogeneous soil consisting of layers of soil with different permeabilities as shown below. a. Estimate the equivalent coefficient of permeability (k) in the horizontal direction b. Estimate the equivalent coefficient of permeability (k,) in the vertical direction 1.5m 1.2x 103 cm/sec, ky 2.4 x 104 cm/sec 2.8 x 10 5.5 x 10s cm/sec, ky 4.7 x 10 cm/sec k 2.0m kx cm/sec, ky 3.1 x 105 cm/sec 2.5m k
Problem 3: A constant-head permeability test was performed on the soil sample shown below. The hydraulic...
Problem 3: A constant-head permeability test was performed on the soil sample shown below. The hydraulic conductivities were 0.04 cm/s for the sand and 0.0004 cm/s for the silt. The cross-sectional area of the sample is 10 cm², of which 9 cm' is sand and the remainder is silt. (a) Plot how the total hydraulic head (expressed in terms of AH) and hydraulic gradient vary along the length of the sample. (b) What would be the hydraulic conductivity (k) for...
Problem 5- Equivalent hydraulic conductivity (10 pts) A layered soil is shown below: H1= 2m H2...
Problem 5- Equivalent hydraulic conductivity (10 pts) A layered soil is shown below: H1= 2m H2 =3.5 m H3 =4 m kv1 =10-3 cm/s, kh1= 4.5x10-4 kv2=3x10-4 cm/s, kH2= 2.5x10-5 kv3=5.2x10-4 cm/s, KH3= 7.5x 10-4 kileg) kveg) a) Estimate the ratio of equivalent hydraulic conductivity: b) Estimate the flow rate (cm/hr) based on equivalent hydraulic conductivity if a flow direction is horizontal.
Q1: for the soil profile in the figure, the surcharge was replaced by a rigid square...
Q1: for the soil profile in the figure, the surcharge was replaced by a rigid square 2 m footing of 2 2m and loading of 200 kN/m from the N.G.L, after two at dept h of 2m 2m Sand months of surcharge application, estimate the total settlement of the footing, knowing that "q" of the surcharge is 250 kN/m average N of the sand layer is 30, the Poisson ratio in saturated soils is: 0.5, the modulus of elasticity of...
B. A constant-head permeability test was run on a soil sample 7.3 em in diameter and...
B. A constant-head permeability test was run on a soil sample 7.3 em in diameter and 14 em long, Q-10 em/min, b-100 em. The soil grains have a dry weight of 985 g, a specifie gravity of 2.7, and a void ratio 0.610. Determine the followings a. The coefficient of permeability. b. The seepage velocity of the soil v. 15 c. The actual velocity v. 4c
)lethöd illustrated ered soil is shown in Figure 7.33. Given: , H 1.5 m k, 9...
)lethöd illustrated ered soil is shown in Figure 7.33. Given: , H 1.5 m k, 9 x 10-4 cm/sec . H2 2.5 m k2 7.8 10-3 cm/sec H 3.5 m k3 -4.5 x 10-5 cm/sec stimate the ratio of equivalent permeability, k #Heg/kv(eq). in Figure Figure 7.33
YUUID 16.3 The soil profile at a site is shown in Figure P16.3. Find the total...
YUUID 16.3 The soil profile at a site is shown in Figure P16.3. Find the total horizontal normal stresses at A and B, assuming at-rest conditions. GI 2 m 3 m Sand (y = 16.5 kN/m2; k, = 0.45) • A GWL 4 m Clay (Ysat = 19.0 kN/m°: K = 0.55)
A soil profile is shown below. The soil sample is taken from depth of 11m, a)...
A soil profile is shown below. The soil sample is taken from depth of 11m, a) Is it OC or NC soil? b) If it is loaded with A6= 28 t/m2 calculate the settlement of clay layer. For sand Ydry = 1.75 t/m and Ysat = 2.0 t/m3 For clay Xsat = 1.9 t/m3 6'o+A6 SC 6'o+A6 CsH Сен -log 1+ Sc log 087645) 610 1+eo 610 Sc CH 1+0 -log 6) + CCH 1+ -log (9729) 610 Sand 5m...
A, B and C. Assume (a) For the soil profile shown below, determine the effective stress...
A, B and C. Assume (a) For the soil profile shown below, determine the effective stress at points (b If the effective grain size of the silt is D -o 02 mm estimate the maximum height of capillary all of tho silt above the GWT is moist but not saturated. rise in the silt in units of feet. Soil Surface Clean Coarse118 lb/t Sand 22 lb/t 7 ft ds203 b/t ?'c = 4 3 20.11 lb/ft2 hc = 13 ft...
A 12 m high retaining wa is built to retain a 3-layered soil profile shown in Figure 2. The soil parameters are given in the figure. During raining season, ground water rises to interface between Soil 1 and Soil 2. Assume that there is no friction between the vertical wall and the soils. (i) Find the surface surcharge q that would just close the tensile crack on the ground surface at the active failure stage of the retaining wall. (5...
3. (5 pts) A non-homogeneous soil consisting of layers of soil with different permeabilities as shown below. a. Estimate the equivalent coefficient of permeability (k) in the horizontal direction b. Estimate the equivalent coefficient of permeability (k,) in the vertical direction 1.5m 1.2x 103 cm/sec, ky 2.4 x 104 cm/sec 2.8 x 10 5.5 x 10s cm/sec, ky 4.7 x 10 cm/sec k 2.0m kx cm/sec, ky 3.1 x 105 cm/sec 2.5m k
Problem 3: A constant-head permeability test was performed on the soil sample shown below. The hydraulic conductivities were 0.04 cm/s for the sand and 0.0004 cm/s for the silt. The cross-sectional area of the sample is 10 cm², of which 9 cm' is sand and the remainder is silt. (a) Plot how the total hydraulic head (expressed in terms of AH) and hydraulic gradient vary along the length of the sample. (b) What would be the hydraulic conductivity (k) for...
Problem 5- Equivalent hydraulic conductivity (10 pts) A layered soil is shown below: H1= 2m H2 =3.5 m H3 =4 m kv1 =10-3 cm/s, kh1= 4.5x10-4 kv2=3x10-4 cm/s, kH2= 2.5x10-5 kv3=5.2x10-4 cm/s, KH3= 7.5x 10-4 kileg) kveg) a) Estimate the ratio of equivalent hydraulic conductivity: b) Estimate the flow rate (cm/hr) based on equivalent hydraulic conductivity if a flow direction is horizontal.
Q1: for the soil profile in the figure, the surcharge was replaced by a rigid square 2 m footing of 2 2m and loading of 200 kN/m from the N.G.L, after two at dept h of 2m 2m Sand months of surcharge application, estimate the total settlement of the footing, knowing that "q" of the surcharge is 250 kN/m average N of the sand layer is 30, the Poisson ratio in saturated soils is: 0.5, the modulus of elasticity of...
B. A constant-head permeability test was run on a soil sample 7.3 em in diameter and 14 em long, Q-10 em/min, b-100 em. The soil grains have a dry weight of 985 g, a specifie gravity of 2.7, and a void ratio 0.610. Determine the followings a. The coefficient of permeability. b. The seepage velocity of the soil v. 15 c. The actual velocity v. 4c
)lethöd illustrated ered soil is shown in Figure 7.33. Given: , H 1.5 m k, 9 x 10-4 cm/sec . H2 2.5 m k2 7.8 10-3 cm/sec H 3.5 m k3 -4.5 x 10-5 cm/sec stimate the ratio of equivalent permeability, k #Heg/kv(eq). in Figure Figure 7.33
YUUID 16.3 The soil profile at a site is shown in Figure P16.3. Find the total horizontal normal stresses at A and B, assuming at-rest conditions. GI 2 m 3 m Sand (y = 16.5 kN/m2; k, = 0.45) • A GWL 4 m Clay (Ysat = 19.0 kN/m°: K = 0.55)
A soil profile is shown below. The soil sample is taken from depth of 11m, a) Is it OC or NC soil? b) If it is loaded with A6= 28 t/m2 calculate the settlement of clay layer. For sand Ydry = 1.75 t/m and Ysat = 2.0 t/m3 For clay Xsat = 1.9 t/m3 6'o+A6 SC 6'o+A6 CsH Сен -log 1+ Sc log 087645) 610 1+eo 610 Sc CH 1+0 -log 6) + CCH 1+ -log (9729) 610 Sand 5m...
A, B and C. Assume (a) For the soil profile shown below, determine the effective stress at points (b If the effective grain size of the silt is D -o 02 mm estimate the maximum height of capillary all of tho silt above the GWT is moist but not saturated. rise in the silt in units of feet. Soil Surface Clean Coarse118 lb/t Sand 22 lb/t 7 ft ds203 b/t ?'c = 4 3 20.11 lb/ft2 hc = 13 ft...
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