A flow net for flow around a single row of sheet piles in a permeable soil shown in Figure 8.7. Given that k, = k = k = 5 x 10-³ cm/s, determine a. How high (above the ground surface) the water will rise if piezomet placed at points a and b b. The total rate of seepage through the permeable layer per unit length c. The approximate average hydraulic gradient at c Water level Ground surface 5.6 m m H b 2.2 m Wa Fl Fl Fl

A flow net for flow around a single row of sheet piles in a permeable soil shown in Figure 8.7. Given that k, = k = k = 5 x 10-³ cm/s, determine a. How high (above the ground surface) the water will rise if piezomet placed at points a and b b. The total rate of seepage through the permeable layer per unit length c. The approximate average hydraulic gradient at c Water level Ground surface 5.6 m m H b 2.2 m Wa Fl Fl Fl

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter7: Seepage

Section: Chapter Questions

Problem 7.2P

See similar textbooks

Similar questions

For the concrete Dam shown in figure, determine the total average seepage for the given permeable strata by drawing Flow Net. The detail dimensions are given on the figure. The head of water on upstream side is 6ft and on downstream side is 1ft. Assume of Nf= 3, Nd= 6 and rectangular flow elements
Q#4 : For the concrete Dam shown in figure, determine the total average seepage for the given permeable strata by drawing Flow Net. The detail dimensions are given on the figure. The head of water on upstream side is 6ft and on downstream side is 1ft. Assume of Nf= 3, Nd= 6 and rectangular flow elements. Use MSpaint or graph paper
A flownet for flow around a single row of sheet piles in a permeable soil layer is shown in Figure 1 below. Given the hydraulic conductivity is 5 x 10-3 cm/sec. Determine:
(c) A dam shown in Figure Q1 (c) retains 6m of water. A sheet pile wall on the upstreamside (which is to reduce seepage under the dam) penetrates 4m into a 10m thick of siltysand stratum. Below the silty sand is a thick deposit of clay. Assume that the silty sandis homogeneous and isotropic. (i) Calculate q in cm/s.(ii) Analyze the pore water pressure distribution on the front of the sheet pile (atevery 2m @ at points A, F and G). Given the Nd of points A, F and G are 0.5,1.5 and 3.0 respectively.(iii) Analyze the pore water pressure distribution at the base of the dam. (at every5m @ at points A, B, C, D and E). Given the Nd of points A, B, C, D and E are5.6, 6.7, 8.0, 10.0, 13.0 respectively.(iv) Determine the uplift force under the dam.(v) Calculate the factor of safety against piping. Given Lmin = 0.85m.
Use 10 kN/m3 for unit weight of water. For a concrete structure that retains water, a flow net is sketched as shown in Figure H8-3. Noting the marked location of the Datum, answer the following: Mark on the figure all boundary Also mark the type of each boundary. Calculate the uplift pressures at points A, B, C, D, E, and F. Calculate the factor of safety against The seepage loss (q) per day per meter length of the (i.e. q in m3/day/m) if the permeability of the soil is k = 10-4 m/sec.
A deposit of cohesionless soil with a permeability of 0.3 mm/s has a depth of 12 m with impervious ledge below. A sheet pile wall is driven into this deposit to a depth of 8 m. The wall extendsabove the surface of the soil, and a 3 m depth of water acts on one side. Sketch the flow net and determine the seepage quantity. a. 600 ml/s/meter length b. 300 ml/s/meter length c. 1200 ml/s/meter length d. 900 ml/s/meter length
A flow net for flow around a single row of sheet piles in a permeable soil layer is shown in Figure below with a scale as shown. Given that kx = kz=k = 4 x 10-3 cm/sec, determine How high (above the ground surface) the water will rise if piezometers are placed at points a and b The total rate of seepage through the permeable layer per unit length The approximate average hydraulic gradient at c factor of safety against piping x=1.6 y=2.8
1. Which of the following least affects hydraulic gradient or slope of HGL? A. PIPE LENGTHB. PIPE DIAMETERC. TYPE OF PIPED. FLOE RATE 2. In laminar flow, which is correct?BJ: higher Re value has higher friction factorJB: lower Re value has lower friction factorGroup of answer choices A. BJ is false and JB is true B. BJ is false and JB is false C. BJ is true and JB is false D. BJ is true and JB is true 3. In a system with 4 reservoirs and 2 pipe junctions, how many continuity equations are formulate? A. 3B. 2C. 1D. 4E. 5
Illustrated laboratory setup includes a column of homogenous soil with a square cross-section area of 25 cm2. A constant head difference is applied for the setup. Assume continuous, steady-state flow in a fully saturated medium, and all head loss occurs in the soil. Points A, B, and C are located as shown in the figure. The saturated unit weight of sand is 18 kN/m3. a) Determine the elevation, pressure and total head at Points A and B.b) Determine the hydraulic gradient.c) Determine the total amount of flow per minute if k = 10 cm/mind) Show the direction and calculate the seepage force acting on plane x-x.e) Calculate the effective stress along the plane parallel to the direction of flow assuming that the total stress along that direction is 25 kPa at Point C.
For the two-dimensional flow system shown below (units in meters):Compute the total flow rate under the Dam. X = 4, Y = 8. Note 1: Point A is located in the middle point of the equipotential lines. Point B is located in the middle point of the flow lines.Note 2: Assume e=0.8 (void ratio) and k=10^-3 cm/s (coeff. of permeability).Note 3: Datum is located at the bottom level of the water (right side of Dam).Note 4: Remember, the figure is drawn to scale. So, use the value of 2X+Y to estimate any dimension that you consider necessary.
This question in open channel hydraulic by chow/chapter 5
A double wall sheet pile coffer dam retains a height of water 9 m on one side. A flow net constructed for this structure, driven into a pervious deposit overlain by an impervious ledge, consists of five flow channels and fifteen potential drops. The length of the coffer dam is 90 metres.If the coefficient of permeability of the pervious deposit is 10^–2 mm/s determine the seepage in cubic metres per day. a. 621.4 m^3/s b. 946.5 m^3/s c. 101.0 m^3/s d. 233.3 m^3/s