●●●Example: 25/1Consider a concrete pile that is0.305 m x 0.305 m in cross sectionplaced in sand. The pile is 15.2 mlong. The followingvariations of N60 with depth.are theEstimate Q, using:-Estimate Qf for the pile using:Meyerhof (1976) equationBriaud et al. (1985)-Meyerhof (1976) equationBriaud et al. (1985)-• Determine the allowable load-carrying capacity of the pilebased on Meyerhof's methodand Briaud's method. Use afactor of safety of 3.Depth below ground surface (m)1.53.04.56.07,59.010.512.013.515.016.518.019.521.0Neo81012141811172028293230.28

Answered: Image /qna-images/answer/603099b9-aff3-4adb-b34b-6f8596a709e1.jpg

Example: 25/1 • Consider a concrete pile that is 0.305 m x 0.305 m in cross section placed in sand. The pile is 15.2 m long. The following are the variations of N60 with depth. ● ● Estimate Q, using: - Meyerhof (1976) equation Briaud et al. (1985) • Estimate Qf for the pile using: Meyerhof (1976) equation Briaud et al. (1985) - • Determine the allowable load- carrying capacity of the pile based on Meyerhof's method and Briaud's method. Use a factor of safety of 3. 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 18.0 19.5 21.0 Nee 8 10 9 12 14 18 11 17 20 28 29 32 30 28

Example: 25/1 • Consider a concrete pile that is 0.305 m x 0.305 m in cross section placed in sand. The pile is 15.2 m long. The following are the variations of N60 with depth. ● ● Estimate Q, using: - Meyerhof (1976) equation Briaud et al. (1985) • Estimate Qf for the pile using: Meyerhof (1976) equation Briaud et al. (1985) - • Determine the allowable load- carrying capacity of the pile based on Meyerhof's method and Briaud's method. Use a factor of safety of 3. 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 18.0 19.5 21.0 Nee 8 10 9 12 14 18 11 17 20 28 29 32 30 28

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Determine the allowable load capacity of the 0.4 m diameter pile shown in Figure 4. The fill is new and unconsolidated. A steel shell is proposed around the pile within the fill layer to eliminate the negative friction. The ground water level is at the middle of the fill layer. Use a factor of safety of 2.5. (y=moist unit weight; ysat=saturated unit weight) Steel shell Fill layer Ysat = 17 kN/m, Y=16 kN/m³ O'= 30° K=1.2 8'=0.86' 4 m %3D Clay (overconsolidated) Ysat = 19.5kN/m³ 10 m PR' = 30° 8'=0.6¢R' Sand Ysat = 18 kN/m³, y = 16.5 kN/m3 O'= 30° K=1.3 18 m 8'=0.86' 0.5 m
A frictional pile with a circular cross-section (diameter = D) is pushed into the soil to a distance (L) and then it is subjected to an axial force (P) on its top end. Derive a formula to calculate the normal stress in any section x.
Q : For the circular bar shown in figure, subjected to uniformly distributed load (f kN/m) along its length. The length (L) and FAN diameter of pile (D) and modulus of elasticity (E) are given in Table below, find the displacement at point (A). L (m) f(kN/m) D (mm) (Gpa) 450 120
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.
A timber pile of length 8m and diameter of 0.2m is driven with a 20 kN drop hammer, falling freely from a height of 1.5m. The total penetration of the pile in the last 5 blows is 40 mm. Use the engineering news record expression. Assume a factor of safety of 6 and empirical factor (allowing reducing in the theoretical set, due to energy losses) of 2.5 cm. The safe load carrying capacity of the pile
7. If a 45 cm diameter pipe pile is driven into clayey soil to a depth of 12 m. (a) what would the allowable load capacity (Q) be? The water table is 2 m below the ground surface and the soil profile consists of two clay layers (refer to the figure below). Use the ß method to calculate skin friction and the R=30° for all clay layers. (b) Explain how you selected FS value you use. 12 m ▶ 9m 2m 45 cm Y = 18.5kN/m³ = 30kN/m² Ysat = 19kN/m³ C₂ = 30kN/m² Ysat = 20kN/m² S = 60kN/m²
A concrete pile group 3x3 with spacing of 0.6m is used to support a wind turbine in a sand deposit. Individual pile diameter = 0.3 m and length=6m. A. If the allowable (working) lateral capacity for a single pile is 95 kN, what is the maximum allowable lateral deflection for each pile? B. Is the lateral deflection acceptable? Explain your answer in 1-2 sentences.
The wooden pile shown in the figure has a diameter of 95 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 = 2.90 kN/m. The length of the pile is L = 5.6 m and its elastic modulus is E = 8.6 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.
3. 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.
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
I need detailed explanation to solve the exercise below. There are some formulas and hints, I also added some tables from the book.Meyerhof's method, Coyle and Castello's method and Vesic's method were already solved.
A pile with a diameter of 40cm and a length of 15m is intended for the sandy soil. If the standard tube test around the pile is homogeneous with N = 30, find the tip support and friction support of the pile. ans Qs=1507.2kn Qp=1130.4kn