engineering recuitment WBMSC Sub Assistant Engineer Civil Mock Test 2023 Soil Mechanics and Foundation Engineering Shear Strength
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 _______.
1
c = s + σn tan ϕ
2
c = s - σn tan ϕ
3
s = σn + c tan ϕ
4
s = c - σn tan ϕ