Loose soil can slide back into the trench — especially on slopes, in wet conditions, or if the pile is too steep.
Why It Matters:
Rollback doesn’t just threaten trench stability — it can bury tools, damage protective systems, or trap workers inside the trench. Many trench incidents happen after the digging is done.
Key Points:
- Compact spoil piles regularly to prevent sloughing or settling.
- Never store tools or materials on top of spoil piles — they can roll in too.
- Slope or bench spoil piles if needed to reduce steep sides.
- Avoid placing spoil piles on unstable ground (e.g., frozen, saturated, or sloped toward the trench).
- Use trench shields or end protection if rollback risk is high.
✅ What goes up shouldn’t roll back down — manage your spoil zone with intent.
Ask the Crew:
- Are our spoil piles compacted and stable?
- Has rain, vibration, or digging made rollback more likely?
- Are we keeping tools and materials off the piles?