For the completed flow net of the figure below, compute the flow under the dam per...
Consider the figure of a dam shown below. The soil underneath the dam foundation has a coefficient of permeability, k = 3.5 x 10-3 cm/s. The water head on the upstream side is 15 m, and on the downstream side is 1 m. Compute the daily seepage underneath the dam if the length of the dam is 400 m. (Hint: draw the flow net) 1 1 DAM 15 m 1 m is Bed Rock
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 "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...
10. Calculate the following parameters from the flow net below. (a) The seepage under the dam (in m/s) (b) The uplift pressure at point A under the dam (in kPa) 20 m L-1m 6.5 m Concrete 1 m K4.5 x 10 cm/s 10.5 m AYANAYAYA Impervious
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...
A small gravity dam is founded on clayey grav els, overlying relatively impevious bedrock, as shown below. The clayey gravel has a fines content of 35%, a natural water content of 20%, and an estimated hydraulic conductivity of 10-5 ans a Taking at most 5 to 8 minutes, sketch a flow net on the figure below, a qualitatively correct flow net is sufficient. Critique your own flow net by clearly indicating what aspects would require modification if you had the...
Find the flow rate per meter and draw pressure distribution under the concrete dam if kx=X1 cm/sec and ky=X2 cm/sec: H Dam Impervious X1= 8*10-3 X2= 2*10-4 H=6.6 m
2. Complete the following for the impermeable dam shown below: a. Identify a datum, indicate the first and last equipotential lines, and indicate the first and last flow lines b. Draw the flow net and determine the seepage under the dam. Calculate the pore water pressure (u) at points A, B, and C (in units of kPa). d. c. Estimate the uplift force (Fu) under the concrete dam (in units of kN/m of length) Note: an additional figure is included...
4. An earth dam in Figure 3 composes of a uniform material. It has a horizontal drainage blanket at the base that extends from the downstream toe to a distance of 30 m. The embankment has a permeability of 2.0 x 10-6 m/s. The freeboard is 3.0 m. Draw the phreatic line and thus determine the seepage through the dam. 5. The specific weight of the dam shown in Figure 3 is 2.63, and the coefficient of friction between dam...