A direct shear test was conducted on a cohesionless soil ( c = 0) specimen under a normal stress of 200 kN/m 2 . The specimen failed at a shear stress of 100 kN/m 2 . The angle of internal friction of the soil (degrees) is

A direct shear test was conducted on a cohesionless soil ( c = 0) spec

1.	A direct shear test was conducted on a cohesionless soil ( c = 0) specimen under a normal stress of 200 kN/m 2 . The specimen failed at a shear stress of 100 kN/m 2 . The angle of internal friction of the soil (degrees) is
A.	26.6
B.	29.5
C.	30.0
D.	32.6
Answer» B. 29.5

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A direct shear test was conducted on a cohesionless soil ( c = 0) specimen under a normal stress of 200 kN/m 2 . The specimen failed at a shear stress of 100 kN/m 2 . The angle of internal friction of the soil (degrees) is

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