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 18.19P
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Find the capacity
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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).
The 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.
A 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.
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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- P-2 A driven closed-ended pile, circular in cross section, is shown in the Figure. Calculate the following: Layer I Groundwater 3 m táble a. The ultimate point load using Meyerhof's procedure. 3 m Layer II b. The ultimate frictional resistance Qs. [Take K = 1.4 and ô'= 0.6º'] c. The allowable load of the pile (use FS = 3 15 m Layer II d. Calculate the (a), (b) and (c) if the layer III was a Clay soil with C,=80 kPa (use ca-method by Terzaghi and FS = 3) %3D Layer I Y = 15.7 kN/m³ 4' = 32° Layer II = 18.2 kN/m3 Ysat = 19.2 kN/m³ Layer III 381 mm Ysat 4' = 32° c' = 0 = 40° c' = 0 c' = 0arrow_forwardH.Q 10 A concrete pile 20 m long having a cross section of 0.46 m x 0.46 m is fully embedded in a saturated clay layer. For the clay, given: Ysat = 18 kN/m3,0= 0, and cu = 80 kN/m2. Determine the allowable load that the pile can carry (FS = 3). Use the method to estimate the skin resistance.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
- Find the maximum pile capacity for the pile group shown in figure below. If My = 500 kN.m and V = 7200 kN. 'My X=1.4 - x=1.4- y=1.2 y=1.2arrow_forwardRefer 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_forwardThe plan of a group pile is shown in the Figure below. Assume that the piles are embedded in a saturated homogeneous clay having a c, = 86 kN/m?. Given: diameter of piles (D) = 316 mm, center-to-center spacing of piles d = 790 mm, and length of piles = 20 m. Find the allowable load-carrying capacity of the pile group. Use FS = 3. (pa 100 kPa) Qu1) = n,n: [94,0(2) +Ea'pc,AL| Q.e) = L,B,CN+E2(L, + B, )e,AL u(p) 'c If Qu(1) < Qu@), then Q, = Qu)7 Number of piles in group: n,×n2 D 7 =1– 7, (n, – 1) + n, (n, – 1)+ vZ (n – 1)(n, – 1)| adn,n, Table 11.10 Variation of a (interpo- lated values based on Terzaghi, Peck and Mesri, 1996) LJB, = 1 8 Cu 7 Pa < 0.1 0.2 1.00 6 0.92 0.3 0.82 0.4 0.74 0.6 0.62 4 T 0.8 0.54 3 4 5 1.0 0.48arrow_forward
- A concrete bored pile has a diameter of 800 mm as given in the figure below. Calculate the ultimate load carrying capacity of the pile. -0.8- Clay Cu = 60 kN/m² Y = 18 kN/m³ %3D 4m G.W.T Sand 6m $ = 30° Y = 20 kN/m³ Clay Cu = 100 kN/m² Y = 20 kN/m³ 5marrow_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 600 mm diameter and 25 m long driven concrete pile carries a column load of 1200 kN. It is estimated that the shaft carries 900 kN and the point carries 300 kN. Determine the settlement of the pile head using the Poulos and Davis method with the following data: Es = 25 MN/m2, Ep = 30,000 MN/m2, and s = 0.2arrow_forward
- 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).arrow_forwardSteps Consider a precast concrete pile that is 0.505 m X 0.505 m in cross section driven in a homogeneous sand with y = 17 kN/m² and friction angle $ = 33ª . The pile is 9 m long. Use Meyerhof's methods for estimating the frictional resistance Qs in Sand. Show all calculation steps. Depth below ground surface (m) 1.5 3.0 4.5 6.0 7.5 9.0 10.5 12.0 13.5 15.0 16.5 18.0 19.5 21.0 Noo 8 10 9 12 14 18 17 20 28 29 32 30 27arrow_forwardFor the pile distribution below, determine the load Pp that the red pile will receive, in Ton. P = 254 Ton, d = 2 m, ex = 0.2 m, ey = 0.3 m, H = 1.3 m. ex, e and positive with the axes. Consider the self-weight of the head.arrow_forward
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