A circular pile having a diameter of 0.35 m is 15.0 m long which is embedded in a layer of dense compacted sand with water table found at 5 m depth having the given properties: First Sand Layer: L = 5 m; Unit weight = 18 kN/m^3 Second Sand Layer: L = 10 m; Saturated Unit weight = 20 kN/m^3 Lateral pressure, K=1.2 Nq = 80 kN/m^2 Coeff. of friction = 0.40 1. Compute the point bearing capacity of the pile. 2. Compute the frictional capacity of the pile. 3. Compute the allowable capacity of the pile assuming a factor of safety of 3.

A circular pile having a diameter of 0.35 m is 15.0 m long which is embedded in a layer of dense compacted sand with water table found at 5 m depth having the given properties: First Sand Layer: L = 5 m; Unit weight = 18 kN/m^3 Second Sand Layer: L = 10 m; Saturated Unit weight = 20 kN/m^3 Lateral pressure, K=1.2 Nq = 80 kN/m^2 Coeff. of friction = 0.40 1. Compute the point bearing capacity of the pile. 2. Compute the frictional capacity of the pile. 3. Compute the allowable capacity of the pile assuming a factor of safety of 3.

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 18.1P: Refer to Figure 18.9. A cantilever sheet pile is driven into a granular soil where the water table...

See similar textbooks

Similar questions

Refer to Figure 18.9. A cantilever sheet pile is driven into a granular soil where the water table is 2 m (L1) below the top of the sand. The properties of the sand are =40, =17.5kN/m3, and sat=19kN/m3. It is proposed to excavate to a depth of 6 m (L) below the ground level. Determine the actual depth to which the sheet pile must be driven (L + D), using the net lateral pressure diagram. Note: Dactual=1.3(L3+L4)theory
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.
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
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.
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).
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.
Figure 15.53 below shows a cantilever sheet pile driven into a granular soil where the water table is 2 m below the top of the sand. The properties of thesand are: ' = 40, m = 17.5 kN/m3, and sat = 19 kN/m3. It is proposed toexcavate to a depth of 6 m below the ground level. Determine the depth towhich the sheet pile mast be driven, using the net lateral pressure diagram. Fig. 15.53
A 600mm diameter pile is embedded in 3 layers of dense sand at a depth of 17m. Nq = 86. The groundwater table is situated between Layers 2 and 3. The layers have the following properties: Layer 1: γ = 16.9 kN/m3. 3m thick. Layer 2: γ = 17.6 kN/m3. 5.5m thick. Layer 3: γsat = 19.65 kN/m3. K is 0.9 and tan α = 0.37. The factor of safety is 3.0. What is the skin friction resistance of the pile in kN? What is the skin friction resistance of the pile in kN? None of the choices 1684.170 1477.156 1257.150 1322.744 866.118 Please answer this asap. For upvote. Thank you very much
A circular pile 0.65m in diameter and 13m long is embedded in loose sand. Site investigation suggests a dry unit weight of 17.35 kN/m3, moisture content of 9% above the water table, specific gravity = 2.65, and a saturated unit weight of 21.46 kN/m3 for the soils beneath the water table (2.75m below the surface). Nq = 95, k=1.35, tan α= 0.35 and FS = 3.0. Calculate the end bearing capacity Determine the skin friction capacity of the pile Find the allowable load if the factor of safety is 3.0 Please answer this asap. For upvote. Thank you
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)
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 circular pile 0.45m in diameter and 15m long is embedded in a layer of dense sand. The soil has the following properties: Dry unit eight is 18 kN/m3 and saturated unit weight is 21 kN/m3 (water table is 4m below from the ground surface), Nq=85, k=1.25, tan αα = 0.45 and FS=2.5 a) Calculate the end bearing capacity b) Calculate the frictional resistance c) Calculate the allowable load