e figure has a diameter of 120 mm and is subjected to a load of P = 80 kN. Along the length of the pile an oplies a constant frictional resistance of w = 4.59 kN/m. The length of the pile is L = 4.8 m and its elastic

e figure has a diameter of 120 mm and is subjected to a load of P = 80 kN. Along the length of the pile an oplies a constant frictional resistance of w = 4.59 kN/m. The length of the pile is L = 4.8 m and its elastic

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Braced cuts

The braced cut is a method of providing lateral support to the soil in foundation trenches, to prevent the trenches from deformation by the caving in of soil and resisting it from moving laterally. During shallow excavation in firm soil, generally, slopes are provided to resist the caving in of soil. During shallow excavation in soft soil and deep excavation, the chances of caving in of soil increase. Hence, it becomes necessary to make a provision to resist the deformation of trenches due to caving in of soil. The braced cut is the method used for such conditions. The excavation using braced cuts is a bit uneconomical as compared to the traditional open-cut excavation method but provides better safety than the cut excavation method.

Question

The wooden pile shown in the figure has a diameter of 120 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 = 4.59 kN/m. The length of the pile is L= 4.8 m and its elastic
modulus is E = 9.5 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.
P
y
A
B
FB
L

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