A conventional triaxial compression lest was conducted on a sample of dense sand from Ft....

A conventional triaxial compression lest was conducted on a sample of dense sand from Ft. Peck Dam, Montana. The initial area of the test specimen was 10 cm2 and its initial height was 70 mm. Initial void ratio was 0.605. The following data were observed during shear. First, calculate the average area of the specimen, assuming it is a right circular cylinder at all times during the test. Then make the calculations necessary to plot the axial stress versus axial strain and volumetric-strain-versus-axial-strain curves for this test. Assuming c' = 0, what is ϕ'?