Civil Engineering MCQAE Level Civil Engineering
The critical height of an unsupported vertical cut in a cohesive soil (c = unit cohesion, φ = angle of internal friction, r = unit weight) is given by
Soil MechanicsSoil MechanicsMEDIUM
Choose the correct answer
A
(4c/r)·tan(45° + φ/2)
B
(2c/r)·tan(45° + φ/2)
C
(4c/r)·cot(45° + φ/2)
D
(2c/r)·cot(45° + φ/2)
Correct Answer
A. (4c/r)·tan(45° + φ/2)
Why is this the answer?
Critical height of unsupported cut = 4c/gamma tan(45+phi/2).
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This MCQ belongs to WBPSC AE Previous Years Questions Series. Full tests include timed attempts, rank comparison and subject-wise analysis.