ECIV 330 Soil Mechanics Chapter4 Stress in Soil Mass

# ECIV 330 Soil Mechanics Chapter4 Stress in Soil Mass - ECIV...

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ECIV 330 Soil Mechanics Prof. Bill X. Yu Spring, 2008

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Chapter IV Stress in Soil ± Requirements ² Proficient in Mohr’s Circle ² Familiar with Pole Method ² Know how to calculate vertical stress under the ground if given a load distribution
4.1 Mohr Circle ± Stress at a point: Definition of Point (Element) in the Soil Mass Element or Point – a small volume with dimensions dx, dy, dz. (Note that dx, dy, and dz are small compared to the dimensions of a structure or a footing, but are large compared to sizes of the particles. While soil consists of particles and void spaces, for the purpose of determining stress, it is assumed to be a homogenous elastic solid.)

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Mohr Circle ± Normal Stresses – stresses oriented perpendicular to a surface of an element. ± Shear Stresses – stresses that act along the surfaces of faces of an element. ± Principal Stresses – normal stresses acting on a face where there is no shear stress acting. ± Major Principal Stress
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## This note was uploaded on 09/08/2009 for the course ECIV 330 taught by Professor Yu during the Spring '08 term at Case Western.

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ECIV 330 Soil Mechanics Chapter4 Stress in Soil Mass - ECIV...

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