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(1) The flow net with approximate square cells for a concrete dam is shown. The silt...
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...
Q.3. A flow net is shown below for a concrete spillway. Assume all elements of the...
Q.3. A flow net is shown below for a concrete spillway. Assume all elements of the flow net are approximately square. The concrete spillway is 800 ft long. The permeable soil below the concrete spillway has a hydraulic conductivity of k -0.001 in/min. The bottom of the reservoir is set as the datum. (a) Determine the rate of seepage below the concrete spillway in units of ft/day; (b) Calculate the uplift pressure along the bottom of the concrete spillway at...
Problem (2) (12) For the concrete dam and soil profile shown in the Figure below, the...
Problem (2) (12) For the concrete dam and soil profile shown in the Figure below, the flow net is cons channel and 8 isted of 3 fNow rops, calculate: a) The rate of seepage under the dam in ft /sec/ft. b) Pore water pressure at points A, C, and D in Ib/ft. c) The uplift force in lb/ft at the base of the dam due to water pressure C use points C and D). 20
Problem 4 A dam is constructed on a permeable stratum underlain by an impermeable rock. A...
Problem 4 A dam is constructed on a permeable stratum underlain by an impermeable rock. A row of sheet pile is installed at the upstream face. If the permeable soil has a hydraulic conductivity of 150 ft/ day, determine the following a. The number of potential drops, Nd b. The number of flow channels, N c. The rate of flow or seepage under the dam 40 t 16 60 t 15 14 13 12 11, 10 9 , 7, 6s...
8.3 Compute the total flow rate under the dam shown in the figure under the following...
8.3 Compute the total flow rate under the dam shown in the figure under the following condition: Δh = 15 m, the soil beneath the dam has a hydraulic conductivity of 3x10-3 cm/s, and the length of the dam perpendicular to the section is 80 m.
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...
GEOTECHNICAL AFTERNOON SAMPLE QUESTIONS Questions 50s-506: A reinforced concrote dam having a sheet-pile cutolf wall is to be uned to retai 12-foot-high wader. The dam is 120 fbet long-d be dimen...
GEOTECHNICAL AFTERNOON SAMPLE QUESTIONS Questions 50s-506: A reinforced concrote dam having a sheet-pile cutolf wall is to be uned to retai 12-foot-high wader. The dam is 120 fbet long-d be dimensions led the now net ne shown in figu爬below. The-soil has the following characteristic: Homework problem Cocfficient of permeability 0003 fpa (isotropie soil) Compute: (1) The quantity of seepage loss under the dam (cfs). (2) The pressure head at Point A, which is 2.0 feet above the impervious base. 12-...
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...
1- A long coffer dam is to be constructed to hold water as shown in the figure. The geometry of t...
1- A long coffer dam is to be constructed to hold water as shown in the figure. The geometry of the final wall is given. The total unit weight of the soil is 20kN/m . Draw the flow net for the steady state seepage flow which occurs under this wall. From the flow net determine: a) The height above point A to which water would rise in a piesometer tube. b) The flow under the wall per metre run of...
CIVL 409 Deliverables Modules 1-3 and due Date Dr. Ghanat, PE 27.3 pts) For the flow...
CIVL 409 Deliverables Modules 1-3 and due Date Dr. Ghanat, PE 27.3 pts) For the flow net shown below, (a) compute the flow rate through soil; (bjcompute the pore water pressure at Point A, which is at elevation 122.0 m. Silty sand has a hydraulic conductivity of 8 x 101 cm/s. 20.0 m- el. 134.2 m l 1243 m el. 124.3 el. 116.0 Sałty el. 96.8 m Concrete dam and elevation (el.) points 20.0 cl 126 1 el. 1243 el....
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...
Q.3. A flow net is shown below for a concrete spillway. Assume all elements of the flow net are approximately square. The concrete spillway is 800 ft long. The permeable soil below the concrete spillway has a hydraulic conductivity of k -0.001 in/min. The bottom of the reservoir is set as the datum. (a) Determine the rate of seepage below the concrete spillway in units of ft/day; (b) Calculate the uplift pressure along the bottom of the concrete spillway at...
Problem (2) (12) For the concrete dam and soil profile shown in the Figure below, the flow net is cons channel and 8 isted of 3 fNow rops, calculate: a) The rate of seepage under the dam in ft /sec/ft. b) Pore water pressure at points A, C, and D in Ib/ft. c) The uplift force in lb/ft at the base of the dam due to water pressure C use points C and D). 20
Problem 4 A dam is constructed on a permeable stratum underlain by an impermeable rock. A row of sheet pile is installed at the upstream face. If the permeable soil has a hydraulic conductivity of 150 ft/ day, determine the following a. The number of potential drops, Nd b. The number of flow channels, N c. The rate of flow or seepage under the dam 40 t 16 60 t 15 14 13 12 11, 10 9 , 7, 6s...
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...
GEOTECHNICAL AFTERNOON SAMPLE QUESTIONS Questions 50s-506: A reinforced concrote dam having a sheet-pile cutolf wall is to be uned to retai 12-foot-high wader. The dam is 120 fbet long-d be dimensions led the now net ne shown in figu爬below. The-soil has the following characteristic: Homework problem Cocfficient of permeability 0003 fpa (isotropie soil) Compute: (1) The quantity of seepage loss under the dam (cfs). (2) The pressure head at Point A, which is 2.0 feet above the impervious base. 12-...
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...
1- A long coffer dam is to be constructed to hold water as shown in the figure. The geometry of the final wall is given. The total unit weight of the soil is 20kN/m . Draw the flow net for the steady state seepage flow which occurs under this wall. From the flow net determine: a) The height above point A to which water would rise in a piesometer tube. b) The flow under the wall per metre run of...
CIVL 409 Deliverables Modules 1-3 and due Date Dr. Ghanat, PE 27.3 pts) For the flow net shown below, (a) compute the flow rate through soil; (bjcompute the pore water pressure at Point A, which is at elevation 122.0 m. Silty sand has a hydraulic conductivity of 8 x 101 cm/s. 20.0 m- el. 134.2 m l 1243 m el. 124.3 el. 116.0 Sałty el. 96.8 m Concrete dam and elevation (el.) points 20.0 cl 126 1 el. 1243 el....
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