Please help with foundations problem, I WILL thumbs up if correct! Water tableDredge lineL₂SandYc' 0SandYac'-0SandYDc'-0The figure above shows a cantilever sheet pile wall penetrating a granular soil.L₁ =5ft, L₂ = 15 ft, y₁ = 105 lb/ft³, Yat 115 lb/ft³, and ' = 30°.a) What is the theoretical depth of embedment, D?b) For a 30% increase in D, what should be the total length of the sheet piles?c) Draw the pressure diagram (similar to that shown in figure 9.7a)d) Determine the theoretical maximum moment of the sheet pile.

Answered: Image /qna-images/answer/d0e66a69-5737-4e71-9e5b-87bcfc403f83.jpg

Answered: Water table Dredge line L₂ Sand Y c' 0…

Principles of Foundation Engineering (MindTap Course List)

8th Edition

ISBN:9781305081550

Author:Braja M. Das

Publisher:Braja M. Das

Chapter14: Sheet-pile Walls

Section: Chapter Questions

Problem 14.1P

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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
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A rock storage pile is being designed for a mine in West Virginia. The pile is linedwith reinforced GCL overlain by a 1.5 mm thick HDPE geomembrane. A heavy nonwoven geotextile is placed on top of the geomembrane. Because the rock is porous(K = 10-2cm/s), it is used as the main LCS stone and no additional leachate collectionstone is being installed. Specify the base slope required to keep the head below 25cm if the design storm is 0.8 cm rain/day and the pipe-to-pipe lateral spacing is 60 mIs this rock a reasonable material to replace the LCS stone?
m DrahmedsoilMechanicsnoteschapter5.pdf Downloads/DrahmedsoilMechanicsnoteschapter5.pdf Example 5.15 A sheet pile wall drove into silty having 5*10-8 m/sec. find the quantity of soil a 7 m permeability of 1.75 m 15m seepage, pore water 1.0m 3.5 m 0.75m pressure at points (A to J), and exit gradient. 7 m Impermeable la Solution • The sheet pile wall length is in direction perpendicular to the page • The problem is two-dimensional flow • LB is upstream equipotential line • JK is downstream equipotential line • BF, FJ, and MN is flow lines • H = 7- 1.75 = 5.25 m, Nr = 4, Na = 8 = 5. 10-8. 5.25 = 13.125 + 10-8 m/sec/m length q = kH The difference in the total head is 5.25m and the Na = 8 so in each drop. loose 5.25/8 = 0.656m
The figure below shows a cantilever sheet-pile wall penetrating a clay. (a) Determine the actual depth of penetration, (b) maximum moment, and (c) section modulus of the sheet-pile section. Use all = 160MN/m² L_{1} = 1.8m L_{2} = 2.6m Ydry = 17.58kN/m³ Ysat 18.69kN/m³ theta = 20 deg c' = 10kPa
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6. A rectangular 12m x 9m coal pillar is located 100m below surface. Panel road widths are 7m, mining height is 2.5m. Panel encounters a dolerite sill and the load increases by 15%. i. Calculate the load and safety of the pillar. ii. Calculate the thickness of the dolerite sill and new safety factor. iii. Discuss the controllable parameter/s in regards to enhancing the stability of the beam in the roof.
A steel pile (H-section; HP 360 1.491; see Table 18.1) is driven into a layer of sandstone The length of the pile is 18.9 m. Following are the properties of the sandstone: Unconfined compression strength = qu(lab) = 78.7 MN/m2 Angle of friction = 36 Using a factor of safety of 3, estimate the allowable point load that can be carried by the pile. Use Eq. (18.42).
Estimate and plot the vertical stress increase, Aoz, along verticals through A, B, the centerline, C and D of the embankment at depths of 0 ft, 10 ft, 20 ft, 30 ft, 40 ft and 50 ft below the original ground surface. Plot also the variation of Aoz along horizontal planes at similar depths. Assume y = 120 pcf. 25ft A * B £ * с D 15ft TEIN
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