Limiting Angle of a Dry Infinite Slope

Easyinfinite slopeangle of repose

For a dry cohesionless infinite slope at limiting equilibrium (FS = 1), the slope angle β is:

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Answer: A. Equal to the friction angle

When FS = tanφ/tanβ = 1, β = φ. A dry cohesionless slope stands at an angle equal to its friction angle.

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