Consider a circularly loaded flexible area on the ground surface. Given that the radius of the circular area R = 4 m and that the uniformly distributed load q 249 kN/m calculate the vertical stress increase Ao, at points 2 m below the ground surface atr 6m.

Consider a circularly loaded flexible area on the ground surface. Given that the radius of the circular area R = 4 m and that the uniformly distributed load q 249 kN/m calculate the vertical stress increase Ao, at points 2 m below the ground surface atr 6m.

Principles of Foundation Engineering (MindTap Course List)

8th Edition

ISBN:9781305081550

Author:Braja M. Das

Publisher:Braja M. Das

Chapter13: Retaining Walls

Section: Chapter Questions

Problem 13.5P

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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

Consider a circularly loaded flexible area on the ground surface. Given that the radius of the
circular area R = 4 m and that the uniformly distributed load q 249 kN/m?, calculate the vertical
stress increase Ao,, at points 2 m below the ground surface at r= 6m.
Answer
OkPa

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