Figure 3-17. Remolded CI readings on samples within the remolding cylinder
(54.8/63.0), and the RI of the soil layer occurring as a depth of 6 inches to 12 inches is 0.850 (51.0/60.0). These
values are entered into the chart as the RI for their respective soil layers.
Finally, the RI value for the critical layer corresponding to one pass of the design vehicle as well as the RI value
corresponding to 50 passes of the design vehicle are entered into the chart of RI values. For example, the critical
layer for one pass of a 105-millimeter howitzer over fine-grained soil is 0 to 6 inches, while the critical layer for
50 passes of the same vehicle is 6 inches to 12 inches (Lesson 3.E.2.b.(1)(c) page 3-27). Therefore, the
corresponding RI values for these two layers are rounded and entered into the chart under "RI for 1 Vehicle" and
"RI for 50 Vehicles" respectively (see table 3-5).
Note: Because molding tests are done only on fine-grained soils and remoldable sand other types of
materials do not possess RI values.