Figure 8.6 shows the state of a sample of soil initially normally consolidated at
R0 where the stress p
0
= p
m moving directly to R1 where the stress is same, by
creep or vibration. From the definition of overconsolidation ratio in Eq. (8.6) the
overconsolidation ratios at R0 and R1 are both the same and are equal to 1.0 since
the stresses have not changed. This means that the overconsolidation ratio defined in
Eq. (8.6) does not properly describe the current state of a soil.