Discussion Forum : Failure Envelopes And Earth Pressure
Question - The principal stress relationship on a failure plane is given by _______
Options:
A .  σ₁=σ₃ tan² α
B .  σ₁=2c tan⁡α-σ₃ tan² α
C .  σ₁=2c tan⁡α+σ₃
D .  σ₁=2c tan⁡α+σ₃ tan² α
Answer: Option D
Answer: (d).σ₁=2c tan⁡α+σ₃ tan² α

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