to retain an edge frost
processing a core to indicate
impracticable to utilize heaving of the soil
homogeneous to dump parapet walls
zoned embankments a truck free escape
diaphragm-type dams to compact rip-rap
rock-fill dams a rout a filter layer
hydraulic-fill dams freeboard a berm
semihydraulic-fill dams allowance rainfall
sheepsfoot rollers a blanket a rock shell
heavy pneumatic-tired rollers to assume to intercept