hydroulic structure EX: A hydraulic structures shown in fig. determine 1- the correction of uplift pressuresat key points by Khosla's theory 2- check the thickness at point A?U/S pile No.1 ØD, = 75.36% ØC, = 64. 15Inter mediate pile No.2 ØE2 = 76.86% ØD2 = 64. 23%D/S pile No.3 ØE3 = 36. 86 % ØD3 = 25.29%ОС2 3D 53. 75%100.598979795.5969693.5A9489898712m4m2,5m17,5m5m6,5m

Correction for the uplift pressure at key points is given asC%=t·ϕ1-ϕ2dwhere t- thickness of the…

EX: A hydraulic structures shown in fig. determine 1- the correction of uplift pressures at key points by Khosla's theory 2- check the thickness at point A? U/S pile No.1 ØD1 = 75.36% ØC, = 64. 15 Inter mediate pile No.2 ØE2 = 76.86% ØD2 = 64. 23% ØC2 = 53.75% D/S pile No.3 ØE3 = 36. 86 % ØD3 = 25.29% 100.5 98 97 97 95.5 96 96 93.5 89 89 87 12m 4m 2,5m 17,5m 5m 6,5m

EX: A hydraulic structures shown in fig. determine 1- the correction of uplift pressures at key points by Khosla's theory 2- check the thickness at point A? U/S pile No.1 ØD1 = 75.36% ØC, = 64. 15 Inter mediate pile No.2 ØE2 = 76.86% ØD2 = 64. 23% ØC2 = 53.75% D/S pile No.3 ØE3 = 36. 86 % ØD3 = 25.29% 100.5 98 97 97 95.5 96 96 93.5 89 89 87 12m 4m 2,5m 17,5m 5m 6,5m

Principles of Foundation Engineering (MindTap Course List)

9th Edition

ISBN:9781337705028

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter18: Sheet-pile Walls

Section: Chapter Questions

Problem 18.5P: In Problem 18.4, find the maximum bending moment in the sheet pile and determine the required...

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►||1 Sheet pile k= 4 x 10-4 cm/sec Impermeable layer Figure 8.23 8,2 Draw a flow net for the single row of sheet piles driven into a permeable layer as shown in Figure 8.23. Given: • H₁ = 3 m D = 1.5 m • H₂ = 0.5 m D₁ = 3.75 m Calculate the seepage loss per meter length of the sheet pile (at right angles to the cross section shown).
Refer 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 friction
Q-7 The following figure shows the flow net for seepage of water around a single row of sheet piles driven into a permeable layer. Calculate the factor of safety against downstream heave, given that ysat for the permeable layer = 17.7 kN/m3. (Note: Thickness of permeable layer T= 18 m) Sheet pile H1 = 10 m H, = 1.5 m 6 m Ysat = 17.7 kN/m³ Heave zone Impermeable layer
Estimate the magnitude of k of the clay at a void ratio (e) of 0.9. Use Eq. (2.41). 2.10 Refer to Figure P 2.10 and use these values: • H = 7 m, • H, = 1.75 m, D = 7 m D = 3.5 m Draw a flow net. Calculate the seepage loss per meter length of the sheet pile (at a right angle to the cross section shown). Sheet pile H1 H2 D1 k= 6.5 x 10-4cm/sec Impermeable layer Figure P2.10 = 0.6. 2.11 A sand has the following: D10 = 0.2 mm, D = 0.4 mm, and void ratio e a. Determine the hydraulic conductivity using Eq. (2.38). b. Determine the hydraulic conductivity using Eq. (2.40).
12.37 Figure P 12.37 shows a group pile in clay. Determine the consolidation settlement of the group. Use the 2:1 method to estimate the average effective stress in the clay layers. 1335 KN K- 3 m ++ 3 m * 18 m 5 m 3 m ↓ 2.75 m X 2.75 m Group plan FIGURE P12.37 Groundwater table 15 m Rock Sand y = 15.72 kN/m² Sand Ysat = 18.55 kN/m³ Normally consolidated clay Ysat = 19.18 kN/m³ € = 0.8 C = 0.8 Normally consolidated clay Ysat = 18.08 kN/m³ % = 1.0 C = 0.31 Normally consolidated clay Ysat = 19.5 kN/m³ € = 0.7 C₂ = 0.26
The flownet for seepage of water around a single row of sheet piles driven into a permeable layer is shown in Figure D(below). Calculate the quantity of seepage loss against downstream heave, given the k = 2.6 x 10-6 m/sec and saturated unit weight = 17.7 kN/m3. The depth of the sheet pile is 6 m into the ground. Sheet pile Heave zone H;=10m H2 =1.5m Impermeable layer O 3.32 x 10-5 m3/s/m O 1.47 x 10-4 m3/s/m 2.95 x 10-5 m3/s/m 1.47 x 10-5 m3/s/m
A group pile in clay is shown in the figure below. Determine the maximum vertical load Qg be applied if the allowable consolidation settlement of the pile group is set to be 0.17 m. Use the 2:1 stress distribution method to estimate the average effective stress in the clay layer. can Qg 3 m Sand Groundwater y = 15.72 kN/m3 table Sand 3 m Ysat = 18.55 kN/m3 2.75 m X 2.75 m Group plan Normally consolidated clay Ysat = 19.18 kN/m³ 15 m 18 m eo = 1 C. = 0,8 Normally consolidated clay Ysat = 19 kN/m3 eo = 0.25, C. =1 5 m Rock
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 calculate the seepage loss per meter length of the sheet pile (at right angles to the cross section shown). H₁ 3 D = 1.5 m D₁ = 3.75 m D₁ -Sheet pile k= 4 x 10-4cm/sec Impermeable layer
5.26 The section through sheet pile is shown in Figure, the coefficient of AVA permeability of the soil is 2.0 x 10- 6 m/s. Draw the flow net and determine the quantity of seepage. 3.00 m 3.00 m Ans.: N = 4.2, Na = 9, q = 4.7*10 m'/sec/m 3.50 m ameo 5.27 The dam shown in Figure is located on the anisotropic soil. The coefficients of permeability in the x and z directions are 5 107 and 1.8*10 m/s, respectively. Determine the quantity of seepage under the dam. Ans.: N = 3.25, Na = 12, q = 1.1*10* m/sec/m 15.00 m 1.00 m 3.00 m 8.00 m 33.00 m- 8.00 m Civil Eng Dept. - College of Eng Soil Mechanics Assistant Prof. Dr. Ahmed Al-Obaidi 411 9 立
1. The figure below shows the flow net for seepage of water around a single row of sheet piles driven into a permeable layer. Calculate the factor of safety against downstream heave, given than Ysat for the permeable layer = 17.7 kN/m³. (note: Thickness of permeable layer T = 18 m). H₁ = 10 m 6 m -Sheet pile Heave zone Impermeable layer H₁ = 1.5 m Ysat 17.7 kN/m³
Q: The following figure shows the flownet for seepage of water around a single row of sheet piles driven into permeable layer. Calculate the factor of safety against downstream heave, given that Ysat = 19 kN/m³ and yw = 9.81 kN/m³. All the relevant information are provided in the figure. HI-10m 6m ↓ Heave zone Sheet pile Impermeable layer H₂= 2 m Y-16 kN/m
Given: Anchored sheet pile shown in figure. Required: For a factor of safety of (2) with respect to passive resistance, what is the value of o? 40 kPa 2 m Tierod 16 kN/m 8 = 0 C=0 p=30° p=40° O p=21°