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?

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?

Principles of Foundation Engineering (MindTap Course List)

9th Edition

ISBN:9781337705028

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter12: Pile Foundations

Section: Chapter Questions

Problem 12.2P: A 20 m long concrete pile is shown in Figure P12.2. Estimate the ultimate point load Qp by a....

See similar textbooks

Similar questions

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 skin friction expected to be develop along the shaft of the pile in kN?
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 end bearing capacity of the pile in kN if N꜀ = 9?
A 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).
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.
A 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.
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 Loose sand di = 30° y = 18.6 kN/m3 20 m F Dense sand $2 = 42° y = 18.5 kN/m
The wooden pile shown in the figure has a diameter of 100 mm and is subjected to a load of P = 70 kN. Along the length of the pile and around its perimeter, soil supplies a constant frictional resistance of w = 4.99 kN/m. The length of the pile is L = 4.2 m and its elastic modulus is E = 8.7 GPa.Calculate(a) the force FB needed at the base of the pile for equilibrium.(b) the magnitude of the downward displacement at A relative to B.
11.22 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 2.8
The wooden pile shown in the figure has a diameter of 105 mm and is subjected to a load of P = 70 kN. Along the length of the pile and around its perimeter, soil supplies a constant frictional resistance of w = 3.85 kN/m. The length of the pile is L = 4.0 m and its elastic modulus is E= 12.9 GPa. Calculate (a) the force Fg needed at the base of the pile for equilibrium. (b) the magnitude of the downward displacement at A relative to B. y L Answers: (a) FB = (b) UA= i i B FB KN mm
The wooden pile shown in the figure has a diameter of 120 mm and is subjected to a load of P = 80 kN. Along the length of the pile and around its perimeter, soil supplies a constant frictional resistance of w = 4.59 kN/m. The length of the pile is L= 4.8 m and its elastic modulus is E = 9.5 GPa. Calculate (a) the force FB needed at the base of the pile for equilibrium. (b) the magnitude of the downward displacement at A relative to B. P y A B FB L
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
H.O 9 A 20-m-long concrete pile is shown in Figure below. Estimate the ultimate point load Q, by a. Meyerhof's method b. Coyle and Castello's method Concrete pile 460 mm x 460 mm Loose sand 20 m Dense sand 42 y 18.5 KN/m