For a sandy soil, the angle of internal friction is 30°. If the major principal stress is 50 kN/m² at failure, the corresponding minor principal stress will be ?

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Sonali Mishra

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📊 Soil Mechanics and Foundations

Q. For a sandy soil, the angle of internal friction is 30°. If the major principal stress is 50 kN/m² at failure, the corresponding minor principal stress will be ?

(A) 12.2 kN/m²
(B) 16.66 kN/m²
(C) 20.8 kN/m²
(D) 27.2 kN/m²

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✅ Correct Answer: (B) 16.66 kN/m²

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