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The φ-line in wedge theory can also be called as __________

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+1 vote
in Geotechnical Engineering II by (93.8k points)
The φ-line in wedge theory can also be called as __________

(a) Surcharge line

(b) Natural slope line and Repose line

(c) None of the mentioned

(d) All of the mentioned

This question was posed to me in semester exam.

The origin of the question is Coulomb’s Wedge Theory in section Failure Envelopes & Earth Pressure of Geotechnical Engineering II

1 Answer

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by (243k points)
Right answer is (b) Natural slope line and Repose line

To elaborate: The φ-line shows a plane inclined at an angle φ to the horizontal at which the soil is expected to stay in the absence of any lateral support. The line therefore is called the natural slope line or repose line.

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