Draw a flow net for the single row of sheet piles driven into a permeable layer as shown in Figure below Given: H₁ = 3 m H₂ = 0.5m D=1.5m D₁ = 3.75 m calculate the seepage loss per meter length of the sheet pile (at right angles to the cross section shown). Sheet pie *-4 × 10-¹cm/sec Impermeable layer

Draw a flow net for the single row of sheet piles driven into a permeable layer as shown in Figure below Given: H₁ = 3 m H₂ = 0.5m D=1.5m D₁ = 3.75 m calculate the seepage loss per meter length of the sheet pile (at right angles to the cross section shown). Sheet pie *-4 × 10-¹cm/sec Impermeable layer

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 7.4P

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The following figure shows a sheet pile wall for a temporary cut at a construction site. The soil has a permeability, k, of 10-7 m/s. 1 m 6 m 1 m 6 m 5 m -ĐATUM IMPERVIOUS ROCK LAYER A. Construct the flow net. Sketch the figure on your answer sheet then construct the flow net. B. Compute the amount of seepage, qt, in terms of m2/s. C. Estimate the pore water pressure at the bottom tip of the wall (point A). Assume water unit weight, yw, is 10 kN/m³. D. What are the assumptions for using a flownet in seepage analysis? Please list at least three.
For a vibroflotation work, the backfill to be used has the following characteristics:D50 = 2 mmD20 = 0.7 mmD10 = 0.65 mmDetermine the suitability number of the backfill. How would you rate the material?
Question 1 For the system shown below, determine the primary consolidation if C, = 0.05 for the followings 50 kN/m? а) о 3 150 kРа Sand 5 m Yt = 18.7 kN/m3 b) ор 3D 175 kРа c) op = 250 kPa Sand Ysat = 19.7 kN/m3 5 m Caly Y = 9.7 kN/m³ Cc = 0.83(= 0.009LL – 10) 2 m e, = 1.1 Sand
(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.
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