square flexible foundation of width B = 2 m applies a uniform pressure of 17 kN/m? to the underlaying ground. Determine the vertical stress increase using at a depth of Im below the center using: a) 2:1 method b) M and N method c) Stress isobars LA

square flexible foundation of width B = 2 m applies a uniform pressure of 17 kN/m? to the underlaying ground. Determine the vertical stress increase using at a depth of Im below the center using: a) 2:1 method b) M and N method c) Stress isobars LA

Principles of Foundation Engineering (MindTap Course List)

8th Edition

ISBN:9781305081550

Author:Braja M. Das

Publisher:Braja M. Das

Chapter7: Settlement Of Shallow Foundations

Section: Chapter Questions

Problem 7.8P

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Concept explainers

Methods to Determine Vertical Stress

The load applied to the soil is transferred to the underground. The presence of water at soil pores and solid grains above the soil are the primary components that are responsible for the effective load transfer. Due to the load acting, the internal component of the soil or the underground formations undergoes deformations or a tectonic shift. The amount of deformation depends upon the amount of load acting on the soil surface, which indeed, depends on the weight of everything present above the soil. Due to this, the underground soil element develops internal stresses which try to resist the tectonic changes.

Question

A square flexible foundation of width B = 2 m applies a
uniform pressure of 17 kN/m² to the underlaying ground.
Determine the vertical stress increase using at a depth of
1m below the center using:
a) 2:1 method
b) M and N method
c) Stress isobars
d) Newmark Method

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