$($a$).$ Choose two $(2)$ confining pressures.

$($b$).$ Plot deviator stress vs$.$ resilient modulus.

$($c$).$ Plot confining stress vs$.$ resilient modulus.

$($d$).$ Define proportionality between confinement, deviator stress, and resilient modulus.

Example

The Table shows the results of resilient modulus tests on a granular material. The distance

between the LVDT clamps is $4in.(102mm).$ The average recoverable deformations measured

by the two LVDTs after $200$ repetitions of each deviator stress are shown in Table