Question
Download Solution PDFWhich is the correct equation of shear stress on soil?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept:
(i) As per Mohr Coulomb's Theory Shear strength of soil is given as,
S = C + σ tanϕ
Where, C = Cohesion, σ = Normal stress, ϕ = friction angle
(ii) The original form of the coulomb's equation was in terms of total normal stress.
(iii) After Terzaghi establishment of effective stress principle, it was found that the shear strength of soil depends on effective parameter not total parameter
S = C' + σ̅ tanϕ
Where, C' = Effective cohesion, σ̅ = Effective stress, ϕ = Effective friction angle
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