The water content (w/w) during trafficking on the three soil
conditions, on average, was 17.5% dry basis in the surface (0–
150 mm), 18.0% at 150–350 mm and 21.1% at 350–600 mm. The
average moisture content of this profile was 18.8%, which is 4.9%
below the moisture content of the maximum compaction for this
soil as determined by the standard Proctor compaction test,
ASTM.D.698 (1933) (see Table 1)