Bundle: Fundamentals Of Geotechnical Engineering, 5th + Mindtap Engineering, 1 Term (6 Months) Printed Access Card
5th Edition
ISBN: 9781337060417
Author: Braja M. Das, Nagaratnam Sivakugan
Publisher: Cengage Learning
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Chapter 18, Problem 18.5P
A 400 mm × 400 mm square precast concrete pile of 15 m length is driven into a sand where γ = 18.0 kN/m3 and ϕ′ = 33°. Assuming δ′ = 0.7ϕ′ and K = 1.4Ko, determine the load carrying capacity of the pile with factor of safety of 3.0.
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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.
1) A precast concrete pile with a cross-section of 350mm x 350mm is embedded in
sand. The length of the pile is 15 meters. Assume that ysand= 15.8 kN/m², Øsand=
35°, and the relative density of sand is 70%. Estimate the allowable pullout
capacity of the pile (FS=4).
X
Please answer 11.22
Chapter 18 Solutions
Bundle: Fundamentals Of Geotechnical Engineering, 5th + Mindtap Engineering, 1 Term (6 Months) Printed Access Card
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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- A 0.36-m square prestressed concrete pile is to be driven in a clayey soil. The design capacity of the pile is 360 kN, with a factor of safety of 2.00. The unconfined compression strength of clay is 115 kPa. Unit weight of clayey soil is 18 kN/m³. Which of the following most nearly gives the length of the pile in meters if the frictional constant is α = 0.76?arrow_forward11.22 A concrete pile measuring 0.406 m X 0.406 m in cross section is 18.3 m long. It is fully embedded in a layer of sand. The following is an approximation of the me- chanical cone penetration resistance (q.) and the friction ratio (F) for the sand layer. Estimate the allowable bearing capacity of the pile. Use FS = 4. Depth below ground surface (m) 9. (kN/m²) F, (%) 0-6.1 2803 2.3 6.1-13.7 3747 2.7 13.7-19.8 8055 2.8arrow_forwardI need a solution to the problem - 12.4arrow_forward
- Please answer 11.7arrow_forwardA 400 mm x 400 mm square precast concrete pile of 15 m length is driven into a sand where γ = 18.0 kN/m3 and Φ' = 33°. Assume δ' = 0.7 and K=1.4Ko determine the load-carrying capacity of the pile with a FS=3. Using Meyerhof's method, Qp=Apq'Nq*≤Apql for computing the point load-carrying capacity Qp, Equations, L'≈15D and f=Kσ'otanδ' for computing the load-carrying capacity of the pile shaft Qs.arrow_forward12.10 A concrete pile 15.24 m long having a cross section of 406 mm × 406 mm is fully embedded in a saturated clay layer for which Ysat = 19.02 kN/m³, p = 0, and c₂ = 76.7 kN/m². Determine the allowable load that the pile can carry. (Let FS = 3.) Use the a method Eq. (12.61) and Table 12.11 to estimate the skin friction and Vesic's method for point load estimation.arrow_forward
- Solve 12,23 and 12,24arrow_forwardVariation of N60 with depth in a granular soil deposit is given below. A concrete pile 9 m long with cross-section of 0.305m X 0.305m is driven into the sand. Then, estimate the allowable load-carrying capacity of the pile (Qallow). Use F.S.=4 and Meyerhof's equation for Qp and Qs. Depth (m) N60 1.5 4 3.0 4.5 7 6.0 7.5 16 9.0 18 10.5 21 11.0 24 12.5 20 14.0 19arrow_forward3. A concrete pile 15.24 m long having a cross section of 406 mm × 406 mm is fully embedded in a saturated clay layer for which Ysat 19.02 kN/m³, Ø = 0, and cu=76.7 kN/m². Determine the allowable load that the pile can carry (Assuming FS-3). Use the a method to estimate the skin friction and Vesic's method for point load estimation.arrow_forward
- Q- A pile of 0.50 m diameter and of length 10 m is embedded in a deposit of clay. The undrained strength parameters of the clay are cohesion = 60 kN/m² and the angle of internal friction = 0. Find the skin friction capacity (kN) of the pile for an adhesion factor of 0.6.arrow_forwardA 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_forwardA 0.36-m square prestressed concrete pile is to be driven in a clayey soil. The design capacity of the pile is 360 kN, with a factor of safety of 2.00. The unconfined compression strength of clay is 115 kPa. Unit weight of clayey soil is 18 kN/m³. Which of the following most nearly gives the end bearing capacity of the pile in kN if N꜀ = 9?arrow_forward
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