22// For the stressed soil element shown in figure below, determine the major and minor principal stresses and their directions. Then find the normal stresses generated on the plane AE which makes an angle of 400 with the plane AB. A 70 kN/m² 40° 20 kN/m² E C 20 kN/m² B 140 kN/m²

22// For the stressed soil element shown in figure below, determine the major and minor principal stresses and their directions. Then find the normal stresses generated on the plane AE which makes an angle of 400 with the plane AB. A 70 kN/m² 40° 20 kN/m² E C 20 kN/m² B 140 kN/m²

Principles of Geotechnical Engineering (MindTap Course List)

9th Edition

ISBN:9781305970939

Author:Braja M. Das, Khaled Sobhan

Publisher:Braja M. Das, Khaled Sobhan

Chapter10: Stresses In A Soil Mass

Section: Chapter Questions

Problem 10.2P

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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

soil ضنتدوسي

22// For the stressed soil element shown in figure below, determine the major and
minor principal stresses and their directions. Then find the normal stresses
generated on the plane AE which makes an angle of 400 with the plane AB.
A
70 kN/m²
40⁰
20 kN/m²
E
C
20 kN/m²
B
140 kN/m²

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Step 1: Determine principal stress , direction and normal stress

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Step 2: Applying formula of principal stress

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Step 3: Applying formula of normal stress

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