Dozing and Earthmoving Techniques
Dozing and earthmoving techniques tests production method, grade control and compaction.
Techniques
- Slot dozing reduces spillage at the blade ends; side-by-side dozing keeps a clean face and steady production.
- Downhill dozing improves push but increases run-away risk; keep the blade low and control speed.
- Cut and fill: strip, excavate, place fill in layers, compact and verify level.
Worked example: A cut is 400 mm too high at one corner. Reasoning: re-survey, remove the high spot in shallow layers, re-compact and check grade. Do not feather the error with loose material; it will settle and fail the level check.
Traps: overloading the blade, pushing fill without compaction, and working to visual grade only.
Key points
- Plan the push and keep a clean face.
- Use slot or side-by-side dozing to reduce spillage.
- Control speed and blade height on downhill work.
- Place fill in layers and compact each layer.
- Verify grade by survey, not by eye.