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Encyclopedia > Effective stress

Effective stress (σ') is a value reflecting the strength of a soil. It's physicality is not fully understood and it's founder, Terzaghi, describes its origin as being seated in the solid phase of the soil, and is found in terms of total stress (σ) and pore water pressure (u): Karl von Terzaghi (Prague, October 2, 1883 – Winchester, Massachusetts, October 25, 1963) was an Austrian civil engineer, called the father of soil mechanics. ... Stress has different meanings in different fields: Look up stress on Wiktionary, the free dictionary. ...


σ'=σ-u


The formula for effective stress is used throughout soil mechanics and is vital in engineering applications.


 
 

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