11.22 A concrete pile measuring 0.406 m X 0.406 m in cross section is 18.3 m long. It isfully 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 sandlayer. Estimate the allowable bearing capacity of the pile. Use FS = 4.Depth below ground surface (m)9. (kN/m²)F, (%)0-6.128032.36.1-13.737472.713.7-19.880552.8

Given:- pile size=0.406m x 0.406m L=18.3m FS=4 To find:- allowable bearing capacity of the pile

ed in a layer of sand. The following is an approximation penetration resistance (q.) and the friction ratio (F) f te the allowable bearing capacity of the pile. Use FS = w ground surface (m) 9. (kN/m²) F,

ed in a layer of sand. The following is an approximation penetration resistance (q.) and the friction ratio (F) f te the allowable bearing capacity of the pile. Use FS = w ground surface (m) 9. (kN/m²) F,

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 18.2P

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Concept explainers

Calculation of Settlement

The vertical displacement of the structural foundation due to the loading from the superstructure is known as settlement. It is due to the reduction of air voids present in the soil. The amount of vertical displacement depends on the bearing capacity of the soil on which the foundation is laid. The effect of the settlement depends on the magnitude of settlement, uniformity, and the structural design of the structure. The maximum allowable settlement for residential and office buildings should be less than 18 mm, for industrial buildings, it is 38 mm and for commercial buildings, it is 25 mm.

Question

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

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