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Civil Engineering - UPSC Civil Service Exam Questions - Discussion

Discussion Forum : UPSC Civil Service Exam Questions - Section 9 (Q.No. 21)
UPSC Civil Service Exam Questions
21.
If s is the shear strength, c and Φ are shear strength parameters, and σn is the normal stress at failure, then Coulomb's equation for shear strength of the soil can be represented by
c = s + σs tan Φ
c = s - σn tan Φ
s = σn + c tan Φ
s = c - σn tan Φ
Answer: Option
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