A vertical bored-and-cast-in-place pile 900 mm in diameter carrying a centrally-applied vertical compressive load of 150 kN is installed to a depth of 6m in a stiff over-consolidated clay (cu = 120 kPa, c' = 10 kPa, o'=25°). Find the ultimate sustained horizontal load which can be applied at a point 4m above ground level. Also find the maximum working load if the lateral deflection of the pile at ground level is limited to no more than 25mm.

A vertical bored-and-cast-in-place pile 900 mm in diameter carrying a centrally-applied vertical compressive load of 150 kN is installed to a depth of 6m in a stiff over-consolidated clay (cu = 120 kPa, c' = 10 kPa, o'=25°). Find the ultimate sustained horizontal load which can be applied at a point 4m above ground level. Also find the maximum working load if the lateral deflection of the pile at ground level is limited to no more than 25mm.

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 12.20P: A 600 mm diameter and 25 m long driven concrete pile carries a column load of 1200 kN. It is...

See similar textbooks

Similar questions

A rectangular pile (0.77 x 0.72 m) is driven in a clayey soil arrangement composed of two different layers. First layer has a height of 7 m, cohesion of 53 kPa, friction factor of 0.89. Second layer has a height of 8 m , cohesion of 78 kPa, and friction factor of 0.88. Compute the allowable load, in kN, that the pile can carry if the factor of safety is 2.00. Compute the skin friction resistance in kN. Compute the end bearing capacity in kN. Round off to two decimal places.
A concrete pile 458 mm by 458 mm square cross section is embedded in a saturated clay. The length ofthe embedment is 16 m. The undrained cohesion, Cu of clay is 60 kN/m2, and the unit weight of clay is 19 kN/m2• Use a factor of safety of 4 to determine the allowable load the pile can carry.
Situation 5 - A rectangular pile (0.77 x 0.72 m.) is driven in a clayey soil arrangement composed of two different layers. First layer has a height of 7 m., cohesion of 53 kPa, friction factor of 0.89. Second layer has a height of 8 m., cohesion of 78 kPa, and friction factor of 0.88. (A.) Compute the skin friction resistance in kN. Round off to two decimal places. (B.) Compute the end bearing capacity in kN. Round off to two decimal places. (C.) Compute the allowable load, in kN, that the pile can carry if the factor of safety is 2.00. Round off to two decimal places.
A rectangular pile (0.88 x 0.68 m.) is driven in a clayey soil arrangement composed of two different layers. First layer has a height of 5 m., cohesion of 54 kPa, friction factor of 0.81. Second layer has a height of 8 m.., cohesion of 72 kPa, and friction factor of 0.81. Compute the allowable load that the pile can carry if the factor of safety is 2.93. Round off to two decimal places.
5 A group of 9 piles of 28 cm diameter is arranged in a square configuration with a center-to-center spacing of 1.11 m. The length of the piles is 13 m. Unit cohesion of the clay is 94 kPa. Determine the ultimate group capacity of the pile group based on block failure. Assume adhesion factor of 0.72. Round off to two decimal places.
1- Find the ultimate capacity of the pile below using A - Meyerhof B- Vesic C- Coyle and Castello with m = 600 using Eq 12.28 0.4om x0.4om CONCRETE PILE Loose SAND $,= 30 Y,=18.4 Ka l3 DENSE SAND Y =18.5 KN /m3 12=420
A 400 mm 400 mm square precast concrete pile of 15 m length is driven into a sand where = 18.0 kN/m3 and = 33. Assuming = 0.7 and K = 1.4Ko, determine the load carrying capacity of the pile with factor of safety of 3.0.
Refer to the pile shown in Figure P9.1. Estimate the side resistance Qs by Using Eqs. (9.40) through (9.42). Use K = 1.5 and Coyle and Castello’s method [Eq. (9.44)]
Figure P12.36 shows a 3 5 pile group consisting of 15 concrete piles of 400 mm diameter and 12 m in length. What would be the maximum load that can be allowed on the mat with a factor of safety of 3? The piles have a center-to-center spacing of 1200 mm.
A concrete pile 16 in. 16 in. in cross section is shown in Figure P12.13. Calculate the ultimate skin friction resistance by using the a. method [use Eq. (12.61) and Table 12.11] b. method c. method Use R=20 for all clays, which are normally consolidated.