Fundamentals of Geotechnical Engineering (MindTap Course List)
5th Edition
ISBN: 9781305635180
Author: Braja M. Das, Nagaratnam Sivakugan
Publisher: Cengage Learning
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Chapter 18, Problem 18.20P
Figure 18.26a shows a pile. Let L = 20 m, D = 450 mm. Hf = 4m, γf = 17.5 kN/m3, ϕ′fill = 25°. Determine the total downward drag force on the pile. Assume that the fill is located above the water table and that δ′ = 0.5 ϕ′fill.
FIG. 18.26 Negative skin friction
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Refer to the pile shown in Figure P 9.1. Estimate the side resistance Qs bya. Using Eqs. (9.40) through (9.42). Use K = 1.5 and ẟ' = 0.6 Φ'b. Coyle and Castello’s method [Eq. (9.44)]
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Meyerhoff's N = 55, Atmospheric pressure = 100 kN/m², Janbu's N = 18.4
Chapter 18 Solutions
Fundamentals of Geotechnical Engineering (MindTap Course List)
Ch. 18 - State whether the following are true or false. a....Ch. 18 - A 1500 kN load was applied on two 20 m long and...Ch. 18 - A 500 mm diameter and 20 m long concrete pile is...Ch. 18 - A 400-mm diameter and 15 m long concrete pile is...Ch. 18 - A 400 mm 400 mm square precast concrete pile of...Ch. 18 - Prob. 18.6PCh. 18 - Prob. 18.7PCh. 18 - Prob. 18.8PCh. 18 - Determine the maximum load that can be allowed on...Ch. 18 - Prob. 18.10P
Ch. 18 - Redo Problem 18.10 using the method for...Ch. 18 - Determine the maximum load that can be allowed on...Ch. 18 - Prob. 18.13PCh. 18 - A steel pile (H-section; HP 360 1.491; see Table...Ch. 18 - A concrete pile is 18 m long and has a cross...Ch. 18 - Prob. 18.16PCh. 18 - Prob. 18.17PCh. 18 - Prob. 18.18PCh. 18 - Prob. 18.19PCh. 18 - Figure 18.26a shows a pile. Let L = 20 m, D = 450...Ch. 18 - Refer to Figure 18.26b. Let L = 15.24 m, fill =...Ch. 18 - Prob. 18.22PCh. 18 - Figure 18.39 shows a 3 5 pile group consisting of...Ch. 18 - The section of a 4 4 group pile in a layered...Ch. 18 - Prob. 18.25PCh. 18 - Prob. 18.26CTP
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- 4. For the cantilever sheet pile wall, compute the depth of Embedment of sheet pile by the approximate method. T 3 m 3 m D 3 Y = 1.9 t/m³ = 30° Y' = 1.0 t/m³ = 30°arrow_forwardDetermine the diameter of 70 ft long pile driven in the medium dense sand (Shown in Figure). Design load is 185Kips and factor of safety can be assumed to be 2.5. Frictional coefficient is 0.45 Sand y = 115lb/ft3 Ø = 28° K = 0.80 30 %3D Sand 128lb/ft %3! Ysat Ø= 30° K = 0.85 33°C 70arrow_forward12.2 A 20 m long concrete pile is shown in Figure P12.2. Estimate the ultimate point load Q, by a. Meyerhof's method b. Vesic's method c. Coyle and Castello's method Use m = 600 in Eq. (12.28). Concrete pile 460 mm x 460 mm 20 m Loose sand +1-30° y- 18.6 kN/m³ FIGURE P 12.2 Dense sand 2-42° y 18.5 kN/m³arrow_forward
- A concrete pile 20 m long having a cross section of 0.46 m × 0.46 m is fully embedded in a saturated clay layer. For the clay, given: Yat = 18 kN/m², = 0, and Cu = 80 kN/m?. Determine the allowable load that the pile can carry (FS = 3). Use %3D the A method to estimate the skin resistance.arrow_forwardConsider a drilled, rough concrete pile with diameter B = 1m and length D = 10m embedded in a site underlain by a 5m thick layer of sand with fiction angle = 41 degrees and Ko = 0.5 that lies over an 8m thick layer of clay with fiction angle = 36 degrees, Ko = 0.38, and Su = 70 kPa. a. Determine the long term end bearing capacity of the pile. b. Determine the long term capacity of the pile.arrow_forward3. Determine the maximum load that can be allowed on a 45cm x 45cm diameter bored pile shown in Figure-1 allowing a factor of safety of 3. Take SPT value at the bottom of pile 40. Sand y = 17.0 kN/m o' = 31° 8 m Sand 10 m Ysat = 19.0 kN/m³ O' = 33° Figure - 1arrow_forward
- A 20-m-long concrete pile is shown in Figure P9.1. Estimate the ultimate point load Q, by a. Meyerhof's method b. Vesic's method c. Coyle and Castello's method Use m = 600 in Eq. (9.26). 9.1 Concrete pile 460 mm x 460 mm Loose sand di = 30° y = 18.6 kN/m3 20 m Dense sand d'2 = 42° y = 18.5 kN/m3 Figure P9.1arrow_forwardQ.7 (a) A 500 mm diameter bored concrete pile is to be formed in the soil profile as shown in figure. The ground conditions are as follows: Granular soil: Dense gravel: Glacial clay: Depth (m) Adhesion factor, cat 7.0 m = 120 kPa c at 8.0 m 145 kPa cat 11.0 m 220 kPa 0 3 7 8 Y = 20 kN/m³ $' = 22.5° K₁ = 1.0 Y= 21 kN/m³ ' = 26.25° 11 K, = 2.0 Y = 20 kN/m³ α = 0.6 N = 9.0 Granular soil Dense gravel Glacial clay Determine the ultimate bearing capacity of the pile for: (a) Embedded length of 8 m (b) Embedded length of 11 marrow_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_forward
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