Page 119 - Moving the Earth_ The Workbook of Excavation

ROCK, SOIL, AND MUD

ROCK, SOIL, AND MUD 3.13

FIGURE 3.9 Moisture-density relationships.

Unfortunately, most such specifications are archaic, mentioning only steel wheel and/or sheeps-
foot rollers, and giving neither the state nor the contractor the opportunity to take advantage of
more recent and specialized compactors.
“Method only” relieves the contractor of responsibility for soil moisture content or other con-
ditions beyond her or his control. If brought up to date with a wider range of usable equipment,
and selection by the state of proper types for the soils in the contract area, it would provide a good
contract basis.