For a sheet pile wall constructed in a soil having effective grain size = 0.1 mm, the difference of the upstream and downstream water levels is 3 m. If the flow net drawn for the problem yields 2 as the ratio of number of head drops to number of flow channels, then what is the discharge in unit of m³/s/m length of sheet pile wall?

Flow Nets A single row of sheet piles is driven into a permeable layer as shown in the figure. Given: • Hị = 5.5 m • H2 = 4.4 m Calculate the seepage loss per meter length of the sheet pile (at right angles to the cross section shown). Bear in mind that in the flow net of the system the number of flow channels is Nf = 4 and the number of potential drops is Na = 8. + Sheet pile H H2 D k = 4 × 10-4 cm/sec Impermeable layer Round your final answer to three significant figures. ® m³/ day /m 1.

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

A small-scale flow experiment is conducted in the box shown to scale in the Figure below with a model sheet pile wall A'-D. Out-of-plane width of the model is 10 cm. Permeability k of the soil is 0.002 cm/s. (a) Identify all equipotential EQ and flow line FL boundary conditions directly on the figure below. (b) Using lines 1, 2, 3, and 4 on the figure as flow lines, sketch the equipotential lines for a square flownet directly on the figure. (c) Using your flownet, estimate the total volume of flow through the model in 5 minutes, in cm³. (d) A standpipe is inserted at point 1, 35 cm below the upstream water level A-A'. Using the flow net shown, estimate the height of water in this standpipe below the upstream water level A-A'? (e) During the experiment, with water flowing, the downstream ground surface is altered to location F-G. Indicate the revised equipotential boundary condition on the downstream side. Sketch likely revised flow line locations in the downstream region using dashed…