The dry sand specimen is put through a triaxial test. The cell pressure is 50 kPa and the deviator stress at failure is 100 kPa. The angle of internal friction for the sand specimen is

The dry sand specimen is put through a triaxial test. The cell pressur

1.	The dry sand specimen is put through a triaxial test. The cell pressure is 50 kPa and the deviator stress at failure is 100 kPa. The angle of internal friction for the sand specimen is
A.	15?
B.	30?
C.	35?
D.	40?
Answer» C. 35?