Fundamentals of Geotechnical Engineering (MindTap Course List)
5th Edition
ISBN: 9781305635180
Author: Braja M. Das, Nagaratnam Sivakugan
Publisher: Cengage Learning
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Question
Chapter 18, Problem 18.7P
(a)
To determine
Find the ultimate point load
(b)
To determine
Find the ultimate frictional resistance
(c)
To determine
Find the allowable load of the pile.
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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 P9.1
i need the answer quickly
A 20-m-long concrete pile is shown in Figure P9.1. Estimate the ultimate point load Qp bya. Meyerhof’s methodb. Vesic’s methodc. Coyle and Castello’s methodUse m = 600 in Eq. (9.26).
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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- 12.2 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_forwardA driven closed-ended pile, circular in cross section, is shown in Figure P9.4. Calculate the following. a. The ultimate point load using Meyerhof's procedure. d. The ultimate frictional resistance Q,. [Use Eqs. (9.40) through (9.42), and take K = 1.4 and 8' = 0.64'.] e. The allowable load of the pile (use FS = 4). Y - 15.7 kN/m = 32 Groundwater table Yu - 18.2 kN/m³ d= 32 Yu - 19.2 kN/m³ = 40 15 m 381 mm Figure P9.4arrow_forward114 A driven closed-ended pile, circular in cross section, is shown in Figure P11.4. Calculate the following: a. The ultimate point load using Meyerhof's procedure. b. The ultimate point load using Vesic's procedure. Take I,, = 50. e. An approximate ultimate point load on the basis of parts (a) and (b).arrow_forward
- 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)]arrow_forwardA driven closed-ended pile, circular in cross section, is shown in Figure 1. Calculate the following. a. The ultimate point load using Meyerhof’s procedure. b. The ultimate point load using Vesic’s procedure. Take Irr = 50.arrow_forwardPlease answer a and c onlyarrow_forward
- A driven closed-ended pile, circular in cross section, is shown in Figure P 9.4.Calculate the following.a. The ultimate point load using Meyerhof’s procedure.b. The ultimate point load using Vesic’s procedure. Take Irr = 50.c. An approximate ultimate point load on the basis of parts (a) and (b).d. The ultimate frictional resistance Qs. [Use Eqs. (9.40 (L' ≈ 15 D)) through (9.42), and take K = 1.4 and ẟ' = 0.6 Φ'.]e. The allowable load of the pile (use FS = 4).arrow_forwardA concrete pile 20 m long with a cross section of 400 mm x 400 mm is fully embedded in a saturated clay layer. The clay has the following properties: γsat = 18.5 kN/m3, ϕ= 0 and cu = 70 kPa. Assume that the water table rises to the tip of the pile. Determine the allowable load that the pile can carry (FS=3). Use the α and λ method to estimate the skin resistance.arrow_forwardThe section of a 4 x 4 group pile in a layered saturated clay is shown in Figure P 9.29. The piles are square in cross section (356 mm x 356 mm). The center-to-center spacing (d) of the piles is 1 m. Determine the allowable load bearing capacity of the pile group. Use FS = 3 and Table 9.10.arrow_forward
- Please answer 11.22arrow_forwardA 20 m long concrete pile is shown in Figure P12.2. Estimate the ultimate point load Qp by a. Meyerhofs method b. Vesics method c. Coyle and Castellos method Use m = 600 in Eq. (12.28).arrow_forwardA 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_forward
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