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A dam section is shown in the figure. The hydraulic conductivity of the permeable layer is...
2. (15 points) The following figure shows a clay layer under an earth-filled dam with a...
2. (15 points) The following figure shows a clay layer under an earth-filled dam with a reservoir on the right side and a pond on the left side of the dam. (1) (10 points) Determine the seepage loss through the clay layer when hydraulic conductivity K = 10-4 m/s, H = 20 m, L = 50 m, and b = 10m. (2) (5 points) A chemical company suddenly dumps a conservative chemical substance into the reservoir. Assuming that the chemical...
Please show all steps and work. Problem 4: (20 points) th For the hydraulic structure shown,...
Please show all steps and work.
Problem 4: (20 points) th For the hydraulic structure shown, a) Calculate the flow rate or seepage loss in m3/day/m around the dam through the permeable layer using k=0.002 cm/s. (6 points) b) Calculate the hydraulic uplift pressure at the base of the dam at point A. (7 points) c) What is the factor of safety against piping? (7 points) The void ratio of the sand is 0.59, Gs = 2.65 sm 10 m...
50 m Impermeable Concrete dam 6 m 1 m 10 m PtA (at mid-point of layer...
50 m Impermeable Concrete dam 6 m 1 m 10 m PtA (at mid-point of layer and centre of base) DATUM Impermeable bedrock Figure 2: Concrete dam (not to scale) Figure 2 shows the cross-section through a long concrete dam in anisotropic soil. The horizontal and vertical permeability of the soil are: K 25 x 10-4 cm/sec and Ky 1 x 10-cm/sec.. (a) Calculate the transform parameter a. In your exam booklet, draw the transformed flow domain to scale and...
3. The flow net shown below illustrates flow conditions beneath a concrete dam featuring an upstream...
3. The flow net shown below illustrates flow conditions beneath a concrete dam featuring an upstream "clay blanket" (an impermeable clay layer) and a downstream "cutoff wall", both of which serve to lengthen the flow path. The coefficient of permeability, k, of the permeable strata is 8 x 10 cm/s. a. Calculate the flow rate, q, per day beneath the dam (per m of dam out-of-plane). b. Calculate the total head, elevation head, pressure head, and pore water pressure at...
A permeable soil layer is underlain by an impervious layer, as shown in the figure. With...
A permeable soil layer is underlain by an impervious layer, as shown in the figure. With k = 5.2 x 10-4 cm/s for the permeable layer, calculate the rate of seepage through it in m/hr/m length. Given: H 3.8 m and a - 58 Ground surface Groundwater table (free surface
Draw a flow netlfor the case of a long concrete dam shown in the Figure below...
Draw a flow netlfor the case of a long concrete dam shown in the Figure below and calculate the quantity of seepage underneath the dam. The soil underneath the dam is homogeneous and isotropic with a coefficient of permeability of 1.8 x 106 m/s. Determine the minimum weight of the dam required to maintain a factor of safety of 1.5 against the uplift of the dam. If the saturated unit weight of the soil is 18 KN/mP, check whether quicksand...
The cross section of a levee that is 750 m long and is underlain by a...
The cross section of a levee that is 750 m long and is underlain by a 2-m-thick 3/ permeable sand layer. The hydraulic conductivity of the sand layer is 3.2m/day. (5 marks) Determine the quantity of water which flows into the ditch in m'/day Elv, 160 m Levee Elv. 150 m 2 m Sand Ditch 125 m Calculate the factor of safety against downstream heave with H 4/ = 12m, H2 2m and D 8m (5 marks) Sheet pile H2...
Problem 13 a. Draw the flow net for the dam shown below (datum is at the...
Problem 13 a. Draw the flow net for the dam shown below (datum is at the 54 ft bedrock-soil interface). The dam has a 36-ft sheet pile driven into the granular soil layer. Redraw the schematic to scale. Use solid 24 ft 21 ft lines to indicate flow lines and dashed lines to indicate Soil equipotential lines. b. Calculate the rate of seepage at 36 ft the exit of the dam in ft/day per 60 ft Sheet pile unit width...
Question Design the cross section of a gravity dam as shown in the figure below. Assume...
Question Design the cross section of a gravity dam as shown in the figure below. Assume the specific unit weight of the concrete is 24 kN/m² and the friction factor between the dam and the underlying layer is 0.65. Consider only water loads and weight of the dam. Find the normal stress and check against sliding and overturning, assuming full uplift. (8 mark) 10 m 8 44 m 1:10 3:10
The following figure shows an earthen dam with a reservoir depth of 60 feet. Undermeath the...
The following figure shows an earthen dam with a reservoir depth of 60 feet. Undermeath the dam is a 50-foot thick uniform pervious soil layer that is underlain by impervious soil. Water flows through and beneath the dam and drains into a filter and drain system. The embankment material and underlying soil both have a hydraulic conductivity (k) of 1X10 cm/sec. 2. a. Compute the seepage through the dam (per foot of dam) in f'/day. (Note: 1 foot 30.48 cm,...
2. (15 points) The following figure shows a clay layer under an earth-filled dam with a reservoir on the right side and a pond on the left side of the dam. (1) (10 points) Determine the seepage loss through the clay layer when hydraulic conductivity K = 10-4 m/s, H = 20 m, L = 50 m, and b = 10m. (2) (5 points) A chemical company suddenly dumps a conservative chemical substance into the reservoir. Assuming that the chemical...
Please show all steps and work.
Problem 4: (20 points) th For the hydraulic structure shown, a) Calculate the flow rate or seepage loss in m3/day/m around the dam through the permeable layer using k=0.002 cm/s. (6 points) b) Calculate the hydraulic uplift pressure at the base of the dam at point A. (7 points) c) What is the factor of safety against piping? (7 points) The void ratio of the sand is 0.59, Gs = 2.65 sm 10 m...
50 m Impermeable Concrete dam 6 m 1 m 10 m PtA (at mid-point of layer and centre of base) DATUM Impermeable bedrock Figure 2: Concrete dam (not to scale) Figure 2 shows the cross-section through a long concrete dam in anisotropic soil. The horizontal and vertical permeability of the soil are: K 25 x 10-4 cm/sec and Ky 1 x 10-cm/sec.. (a) Calculate the transform parameter a. In your exam booklet, draw the transformed flow domain to scale and...
3. The flow net shown below illustrates flow conditions beneath a concrete dam featuring an upstream "clay blanket" (an impermeable clay layer) and a downstream "cutoff wall", both of which serve to lengthen the flow path. The coefficient of permeability, k, of the permeable strata is 8 x 10 cm/s. a. Calculate the flow rate, q, per day beneath the dam (per m of dam out-of-plane). b. Calculate the total head, elevation head, pressure head, and pore water pressure at...
A permeable soil layer is underlain by an impervious layer, as shown in the figure. With k = 5.2 x 10-4 cm/s for the permeable layer, calculate the rate of seepage through it in m/hr/m length. Given: H 3.8 m and a - 58 Ground surface Groundwater table (free surface
Draw a flow netlfor the case of a long concrete dam shown in the Figure below and calculate the quantity of seepage underneath the dam. The soil underneath the dam is homogeneous and isotropic with a coefficient of permeability of 1.8 x 106 m/s. Determine the minimum weight of the dam required to maintain a factor of safety of 1.5 against the uplift of the dam. If the saturated unit weight of the soil is 18 KN/mP, check whether quicksand...
The cross section of a levee that is 750 m long and is underlain by a 2-m-thick 3/ permeable sand layer. The hydraulic conductivity of the sand layer is 3.2m/day. (5 marks) Determine the quantity of water which flows into the ditch in m'/day Elv, 160 m Levee Elv. 150 m 2 m Sand Ditch 125 m Calculate the factor of safety against downstream heave with H 4/ = 12m, H2 2m and D 8m (5 marks) Sheet pile H2...
Problem 13 a. Draw the flow net for the dam shown below (datum is at the 54 ft bedrock-soil interface). The dam has a 36-ft sheet pile driven into the granular soil layer. Redraw the schematic to scale. Use solid 24 ft 21 ft lines to indicate flow lines and dashed lines to indicate Soil equipotential lines. b. Calculate the rate of seepage at 36 ft the exit of the dam in ft/day per 60 ft Sheet pile unit width...
Question Design the cross section of a gravity dam as shown in the figure below. Assume the specific unit weight of the concrete is 24 kN/m² and the friction factor between the dam and the underlying layer is 0.65. Consider only water loads and weight of the dam. Find the normal stress and check against sliding and overturning, assuming full uplift. (8 mark) 10 m 8 44 m 1:10 3:10
The following figure shows an earthen dam with a reservoir depth of 60 feet. Undermeath the dam is a 50-foot thick uniform pervious soil layer that is underlain by impervious soil. Water flows through and beneath the dam and drains into a filter and drain system. The embankment material and underlying soil both have a hydraulic conductivity (k) of 1X10 cm/sec. 2. a. Compute the seepage through the dam (per foot of dam) in f'/day. (Note: 1 foot 30.48 cm,...
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