Principles of Geotechnical Engineering (MindTap Course List)
9th Edition
ISBN: 9781305970939
Author: Braja M. Das, Khaled Sobhan
Publisher: Cengage Learning
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Chapter 8, Problem 8.3P
To determine
Find the seepage loss in
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Refer to Figure 8.23. Given:• H1 = 6m• H2 = 1.5 m• D = 3 m• D1 = 6 mDraw a flow net. Calculate the seepage loss per meter length of the sheet pile (at a right angle to the cross section shown).
The sheet pile shown on the figure below is driven into a soil with a permeabilityk = 22 × 10-4 cm/s. Calculatea- the seepage loss per metre lengthb- the pore water pressure at the 12 points shown on the figure.
Determine the factor of safety against heave on the downstream side of the single-row sheet pile structure shown in Figure 9.30. Use the following soil and design parameters: H1 = 7 m, H2 = 3 m, thickness of permeable layer (T) = 12 m, design depth of penetration of sheet pile (D) = 4.5 m, and γsat = 17 kN/m3
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- Refer to Figure 18.13. Given L1 = 1.5 m, L2 = 3 m; for the sand, =33, =16.5kN/m3, sat=19.0kN/m3; and, for the clay, c=50kN/m2, =0, sat=20kN/m3. Determine the depth of sheet pile required, allowing for a 50% increase from the theoretical estimate.arrow_forwardFigure 18.26a shows a pile. Let L = 20 m, D = 450 mm. Hf = 4m, f = 17.5 kN/m3, fill = 25. Determine the total downward drag force on the pile. Assume that the fill is located above the water table and that = 0.5 fill. FIG. 18.26 Negative skin frictionarrow_forwardRefer to Figure 18.26b. Let L = 15.24 m, fill = 17.29 kN/m3, sat(clay) = 19.49 kN/m3, clay = 20, Hf = 3.05 m, and D = 0.406 m. The water table coincides with the top of the clay layer. Determine the total downward drag on the pile. Assume that = 0.6 clay. FIG. 18.26 Negative skin frictionarrow_forward
- The value of k of soil around a sheet pile is 10-6 m/s. The flow net of this sheet pile consists of 5 flow lines and 11 equipotential lines. Determine the rate of seepage (in cm3/s per m) if the difference in the water level is of 4m.arrow_forwardDraw a flow net for a single row of sheet piles driven into a permeable layer as showin Figure Q3 (b) below. Thus, determine the seepage loss per meter length of thesheet pile.H1 = 9.6 m D = 5 mH2 = 3.7 m D1 = 13 marrow_forwardb) Determine the seepage loss per meter length of the sheet pile if hydraulic conductivity of the permeable layer is as the soil profile shown in Figure 4.arrow_forward
- The Figure below shows a long pile wall driven in sand with Coefficient of permeability K= 0.05cm/sec.it is required to: 1.Estimate the max. possible value of dimension h, where Ah=1.2. 2.Calculate the seepage loss (m /day) per meter of wallarrow_forwardFor the flow net shown in the figure below, if the datum is selected at the downstream water surface, determine: (a) the total head at point b; (b) the pressure head at point b if point b is 11 m below the downstream ground surface (or 13 m below the downstream water surface); (c) uplift pressure at point b; (d) the factor of safety against heave on the downstream side of the single-row sheet pile structure shown below. The depth of penetration of sheet pile (D) is 4.5 m. (Note: the blue dashed area is the heave zone)arrow_forwarda) Determine the seepage loss per meter length of the sheet pile if hydraulic conductivity, k is 4.1 X 10-4 cm/sec.arrow_forward
- 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:arrow_forwardFor the (3×3) pile group shown in the figure,the settlement of the pile group,in a normally consolidated clay stratum having properties as shown in the figure,will bearrow_forwardRefer to Figure 9.42b. Let L = 18 m, γfill = 17 kN/m3, γsat(clay) = 19.8 kN/m3, Φ'clay = 20°, Hf = 3.5 m, and D (pile diameter) = 406 mm. The water table coincides with the top of the clay layer. Determine the total downward drag force on the pile. Assume ẟ' = 0.6 Φ'clay.arrow_forward
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