Direct Shear Test Missing Elements

[sdeaton75]

From reviewing the schema for Direct Shear, I don't see the following properties that are needed for each shear stage. Peak Shear Stress Residual Shear Stress Peak Stress Horizontal Displacement Residual Stress Horizontal Displacement Peak Stress Vertical Displacement Residual Stress Vertical Displacement

The Peak Shear Stress could be determined as the max shear stress from the trial data along with its related horizontal displacement, but there could be some interpretation done so I think these should be identified as elements.

The other values cannot be automatically determined.

To plot the Mohr's circles you need the Peak and Residual Shear Stress since we already have the Normal Stress.

[dponti]

The above elements have been added to the DirectShearType in the development schema, They were present in an earlier iteration of the test procedure but somehow disappeared - I'll continue to check the history to see if I can determine why this occurred. Also, in that earlier version there was the option to have multiple direct shear trials, ostensibly on separate test specimens (and presumably at different normal stresses) as part of a single Direct Shear test, but that option was removed in the current version, so that each "trial" even in on specimens of the same sample would require its own Test with different final results. Is this correct?

Also, please confirm that the current list of reported "final" test results from DirectShear are as follows:

Critical State Friction Angle Peak Angle of Internal Friction Peak Cohesion Residual Angle of Internal Friction Residual Cohesion