What equipment should you rent for earthworks? Cut, fill and compaction in lifts

What earthworks is and what this guide covers

It's the work that leaves the ground ready for what goes on top: a pad for warehouses or homes, a street's subgrade, a parking lot. You cut where there's too much, fill where there's too little and compact every fill lift so it doesn't settle later. Volumes and grades are set by the project; equipment is chosen by phase.

The published rental fleet doesn't include track dozers or motor graders. This guide covers the earthworks you can do with an excavator, backhoe, skid steer and compaction equipment — which is most urban, industrial and housing projects.

Cutting and loading: the excavator

In the cut, the Komatsu PC200-10M0 CE excavator sets the pace: 20.3 t operating weight, 138 net HP and a 1.0 m³ bucket. It cuts the ground, shapes slopes and loads haul trucks from the same spot, without a second machine. Fleet units carry hour monitoring and up-to-date Komatsu maintenance. Size the rental to the actual cutting days: when it's over, the excavator should leave.

Moving and spreading material: backhoe and skid steer

In small areas, material is moved and spread with the backhoe — a front bucket of around 1.0 m³ on the Komatsu WB93R-5E0 — or with the skid steer. The Bobcat S590 lifts around 998 kg on a vertical arm; the compact S18 fits where the site gets tight. Neither replaces the excavator on a large cut, but both finish what it can't reach and clean up the front at the end.

Filling in lifts

• Each lift's thickness, the material and the required compaction are set by the project or your soils lab: get them before you start.
• Spread even lifts: a lift that's thick in one spot and thin in another ends up with uneven density.
• Compact each lift before placing the next; what's left loose below can't be fixed from above.
• Watch the material's moisture as the project specifies: too dry or too wet doesn't compact the same.

Compacting: which equipment for which zone

In open areas — embankments, parking lots, minor roads — the 1.5 t SIMAQ ride-on roller, with a smooth vibrating drum, moves with the operator aboard and outpaces a walk-behind. For road base and large areas, the 4.2 t SIMAQ tandem: double vibrating drum, 40 kN centrifugal force on both drums, up to 12 km/h and 40% gradeability. At edges, next to walls and in corners where the roller can't go, the SQ60 PRO rammer. For patching and sidewalks, the 0.8 t walk-behind roller.

The rental fleet has no padfoot roller. If your fill is clayey, check the compaction-by-soil guide before choosing.

Chaining the rental by phase

The expensive mistake is renting everything on day one. Put dates per machine: the excavator stays while the cut lasts; the roller and rammer arrive when filling starts; the skid steer comes for final cleanup. If the front works at night, add the light tower. If a machine will work for months on end, 6-to-24-month contracts carry preferred terms. And if you have no certified operator for a line, operated rental solves it.