A concrete pile 30 cm diameter is driven into a medium dense sand(φ = 35°, γ = 21 kN/m3), k = 1.0, tan δ = 0.7, Nq = 60). For a depth of 8m, Find the safe load. Taking a factor of safety of 2.5, if the water table rises to 2 m below the ground surface take γw = 10 kN/m2. Assume necessary data if available

A concrete pile 30 cm diameter is driven into a medium dense sand(φ = 35°, γ = 21 kN/m3), k = 1.0, tan δ = 0.7, Nq = 60). For a depth of 8m, Find the safe load. Taking a factor of safety of 2.5, if the water table rises to 2 m below the ground surface take γw = 10 kN/m2. Assume necessary data if available

Principles of Foundation Engineering (MindTap Course List)

9th Edition

ISBN:9781337705028

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter18: Sheet-pile Walls

Section: Chapter Questions

Problem 18.4P: Refer to Figure 18.13. Given L1 = 1.5 m, L2 = 3 m; for the sand, =33, =16.5kN/m3, sat=19.0kN/m3;...

See similar textbooks

Similar questions

A square prestressed concrete pile with a cross section 0.3 m by 0.3 m is driven 15 m into overconsolidated clays with properties as defined: From the ground surface to a depth of 7 m, the unit weight is 17 kN/m3 and the shear strength cohesion cu is 70 kPa; below 7 m, the soil unit weight is 18.5 kN/m3 and cohesion is 105 kPa. Use the total stress α-method to calculate both the design downward axial capacity and upward axial capacity, using a factor of safety of 3 (downward and upward).
A circular pile having a diameter of 0.35 m is embedded through a layer of 4.5 m thick of clay layer into a dense sand having a bearing capacity factor of 78. Unit weight of clay is 16 kN/m3 and saturated unit weight of sand is 18 kN/m3. Water table is located at the top of the sand layer. Lateral pressure factor of compression K = 1.20 and coefficient of friction of concrete pile is 0.42. The allowable capacity 600 kN. Using a factor of safety of 3. Determine the effective vertical stress at the critical depth.
Determine the factor of safety against heave on the downstream side of the single-row sheet pile structure shown in Figure 9.30. Use the following soil and design parameters: H1 = 7 m, H2 = 3 m, thickness of permeable layer (T) = 12 m, design depth of penetration of sheet pile (D) = 4.5 m, and γsat = 17 kN/m3
In Problem 18.4, find the maximum bending moment in the sheet pile and determine the required section modulus, assuming an allowable stress of 190 MN/m2. 18.4 Refer to Figure 18.13. Given L1 = 1.5 m, L2 = 3 m; for the sand, =33, =16.5kN/m3, sat=19.0kN/m3; and, for the clay, c=50kN/m2, =0, sat=20kN/m3. Determine the depth of sheet pile required, allowing for a 50% increase from the theoretical estimate.
Asteel pipe pile having a diameter of 0.35 m is driven 15 m into a loose sand with a unit weight of 16.5 kN/m3 and an angle of internal friction of 33°. Compute the design axial downward loading, using the effective stress basic method of statical analysis with a factor of safety of 2.75.
A cantilever sheet pile 8.20m long is embedded to a depth of 3.20m. It supports dry sand with a dry unit weight of 15.72kN/m3 and an angle of shearing resistance of 34°. The water table is located at the bottom of the sheet pile. Which of the following most nearly gives the total active pressure acting on the sheet pile per meter width?
For the flow net shown in the figure below, if the datum is selected at the downstream water surface, determine: (a) the total head at point b; (b) the pressure head at point b if point b is 11 m below the downstream ground surface (or 13 m below the downstream water surface); (c) uplift pressure at point b; (d) the factor of safety against heave on the downstream side of the single-row sheet pile structure shown below. The depth of penetration of sheet pile (D) is 4.5 m. (Note: the blue dashed area is the heave zone)
A cantilever sheet pile 8.20m long is embedded to a depth of 3.20m. It supports dry sand with a dry unit weight of 15.72kN/m3 and an angle of shearing resistance of 34°. The water table is located at the bottom of the sheet pile. 39. Which of the following most nearly gives the required total passive pressure to ensure stability?
A rectangular deck scow 23.50 m long, 7.10 m wide and 3.23 m high has a draft of 1.22 mwhen light and a draft of 3.05 m when loaded. The bottom length of the scow is 13.15 m. Thewaterline is 21.26 m long when the scow is loaded with rocks and 18.69 m long when light. Ifsea water weighs 1026kg/cubic meters and the loaded dredged material weighs 3208kg/cubicmeters, determine the volume of the loaded rock."
Problem #1 The figure below shows a cantilever sheet-pile wall penetrating a granular soil. Here, L1 = 4 m, L2 = 8 m, unit weight above water table= 16.1 kN/m3, saturated unit weight = 5 18.2 kN/m3, and friction angle of sand = 32 degrees. a. What is the theoretical depth of embedment, D? b. For a 30% increase in D, what should be the total length of the sheet piles? c. Determine the theoretical maximum moment of the sheet pile. d. If the allowable flexural stress = 170 MPa, compute the required section modulus of the sheet pile.
The Figure below shows a long pile wall driven in sand with Coefficient of permeability K= 0.05cm/sec.it is required to: 1.Estimate the max. possible value of dimension h, where Ah=1.2. 2.Calculate the seepage loss (m /day) per meter of wall
Consider a 15 m long concrete pile with a cross section of 0.45 m x 0.45 m fully embedded in sand.For the sand, unit weight, γ = 17 kN/m3 and soil friction angle, ϕ’ = 35o. Estimate the ultimate point??? with each of the following:1.1 Meyerhof’s method (Ans: 1014 kN)1.2 Vesic’s method (Ans: 1754 kN)1.3 Coyle and Castello’s method (Ans: 2479 kN)