A concrete dam of 17.5 m base width retains 5 m of water. A sheet pile cut-off is provided at the upstream end of the base of the dam upto a depth of 8 m. The base of the dam is 1.5 m below ground surface and the pervious foundation extends to a depth of 14 m, below which is an impervious stratum. Draw the flow net and compute the seepage flow below the dam per metre length of dam, if the coefficient of permeability is 2 x 10-3 cm/s. compute the uplift pressure along the base of the dam and the exit gradient.

Q: The weir shown below is 50 m long ● Draw a flow net for the flow under the weir Calculate the rate…

A: Given Data:The length of a weir is, The flow net for the flow under the weir:From the above figure,…

Q: 7) The floor of a weir is 20 m long with two sheet piles of 5 m at the downstream end and 4.5m at…

A: b = 20mH = 3.9mL1 = 4.5mL2 = 5m

Q: 9 A concrete box culvert at two opening (2x3)m and (2x2)m. If the pieces of precast concrete with…

A:

Q: A 100-ft-thick, unconfined aquifer is penetrated by a 10-in. diameter well that pumps at a rate of…

A:

Q: Determine the quantity of seepage under the dam in m³/s. The coefficient of permeability of the…

A: Given:Flow net diagramRequired:Quantity of seepage

Q: For the dam shown in figure: 1. Compute the seepage quantity. 2. Compute the uplift pressure at…

A:

Q: A dam has a sloping apron stilling basin with a slope of 0.077. If the depth for a flood flow of…

A: Data is as shown

Q: 1. A radial gate, 2 m long, hinged about a horizontal axis closes the rectangular sluice of a…

A: (1)  Vertical force on gate :  resultant force Therefore the total hydrostatic thrust is 332.469KN.

Q: The flow net for flow around a single row of sheet piles in a permeable soil later is shown. Given…

A: Step 1: Detailed step by step solution above. Step 2: Step 3: Step 4:

Q: A square culvert is connected to the outlet point of the natural flow path for the 50yr return…

A: Given:  Design discharge Q= 3.6 m3/s Culvert length = 25 m  Slope S = 0.003  Darcy friction…

Q: Given h = 30 m, D= 40 m and the soil beneath the dam has a hydraulic conductivity of 3×103 cm/s.…

A: Given, h = 30 m D = 40 m  k = 3 x 10-3 cm/s or 3 x 10-5 m/s

Q: 0 Ground surface 10 m 2 5.5m 3 Sheet pile 1.5 m 4 II III 5 id 6 Impermeable layer

A:

Q: 6. Flow nets a) Calculate the flow through earth dam shown in the following figure. (scale drawing…

A: the given soil permeability, K =6.5·10-5 m2s·m2Head at dam, H=5m

Q: The headwater elevation (HWE) and tailwater (TWE) depths are 4 m and 3.5 m measured above the…

A:

Q: Q1/Seepage takes place beneath a concrete dam with an upstream blanket and a sheet pile cutoff wall…

A: Permeability of soil, To find: Discharge and flow net diagram.

Q: Q:: For the flow net shown below, if the value of Ah=0.3 m, then find: 1- The pressure head of point…

A: Upto point A Pressure drop =potential drops upto ATotal potential drops ×ΔhPressure drop…

Q: 10 m 24 m 37 m Sheet pile 9 m 1.5 m 8 m k 10-3 cm/sec Impermeable layer Draw a flow net for the weir…

A: k = 10-3 cm/sec We need to draw flownet and calculate seepage rate under weir.

Q: 7.7 7.8 Draw a flow net for the weir shown in Figure 7.22. Calculate the rate of seep- age under the…

A: As per authoring guidelines, if the question number is not specified, the first question or three…

Q: Given h = 30 m, D= 40 m and the soil beneath the dam has a hydraulic conductivity of 3x10-3 cm/s.…

A: Given, h = 30 m D = 40 m  k = 3 x 10-3 cm/s or 3 x 10-5 m/s

Q: Problem 2 For the completed flow net of Fig. 1, compute the flow under the dam per meter of dam if…

A:

Q: A bar rack channel is planned for the maximum flowrate of 2.0 m^3/s. When the flow velocity in the…

A: Answer  we are given  Flow rate  Q = 2 m3/s constant flow velocity in the grit channel v = 0.3 m/s…

Q: Q3 a) A primary clarifier is 3 m wide, 15 m long, and has a side water depth of 2.5 m. The clarifier…

A: Solution Given Data L=15m = 49.21 ft B= 3 m= 9.84 ft Side water depth= 2.5 m = 8.20 ft

Q: A trapezoidal dam with inclined both side has a width at the top of 4 m, heel to the center is 10 m,…

A:

Q: A deposit of cohesionless soil with a permeability of 0.3 mm/s has a depth of 12 m with impervious…

A: Given data,  k = 0.3 mm /s H = 3 m To find out the seepage quantity.

Q: A rectangular channel is 4 m wide, and it reduces to 2 m through a hydraulic structure. Assuring the…

A: The specific energy at the constriction is given as 6 m. Assuming choking occurs, we can use the…

Q: 6 ft Shoe

A: Given:- k=10-3ft/sec To find:- seepagein permeable layer at a)x'=1ft b)x'=2ft

Q: A double wall sheet pile coffer dam retains a height of water 9 m on one side. A flow net…

A:

Q: A 0.5-m-diameterconcrele pipe (5.0 cm wall thickness with rigid pipe walls) carries water 600 m…

A: 0.5-m-diameter concrele pipe (5.0 cm wall thickness with rigid pipe walls)Length,L= 600 mSurface…

Q: For the dam shown in figure: 1. Compute the seepage quantity. 2. Compute the uplift pressure at…

A: We have to determine the value of seepage quantity and uplift pressure at point A and structure…

Q: venturiflame 0.8m wide throat is provided in a rectangular channel of 2m width.If the depth of water…

A:

Q: For the concrete Dam shown in figure, determine the total average seepage for the given permeable…

A: Given data in question  Number of flow lines Nf Number of potential drops Nd Permeability  Head…

Principles of Seepage

In hydrology, when water flows down in a pore or crack of unsaturated soil due to gravity, the deep layer of soil is called seepage. It is the slow movement of water in the soil layer. Seepage is mainly found near hydraulic structures and is responsible for the stability of earthen-type hydraulic structures.