In a tri-axial test carried out on cohesion less soil sample with a cell pressure of 20 kPa, the observed value of applied stress at the point of failure was 40 kPa. The angle of internal friction of the soil is _________.

In a tri-axial test carried out on cohesion less soil sample with a ce

1.	In a tri-axial test carried out on cohesion less soil sample with a cell pressure of 20 kPa, the observed value of applied stress at the point of failure was 40 kPa. The angle of internal friction of the soil is _________.
A.	10°
B.	25°
C.	15°
D.	30°
Answer» E.

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In a tri-axial test carried out on cohesion less soil sample with a cell pressure of 20 kPa, the observed value of applied stress at the point of failure was 40 kPa. The angle of internal friction of the soil is _________.

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