A direct shear test was conducted on a cohesionless soil (C=0) specimen under a normal stress of 200KN/m2. The specimen failed at a shear stress of 100 KN/m2. The angle of internal friction of the soil (degree) is
A
26.6
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B
29.5
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C
30.0
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D
32.6
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Solution
The correct option is A 26.6 At failure, Normal stress,