4. ESTIMATING ROAD CONSTRUCTION UNIT COSTS Food and Agriculture ...
An average production rate in common material (no rock) from an equipment performance handbook might be 150 bank cubic meters per hour for a 300 hp powershift tractor with ripper. The tractor cost is 80/hr. The rate of excavation would be. P = (150 m 3 /hr)/ (2100 m 3 /km) = .07 km/hr. UC = 80/.07 = 1143/km.