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How far back from the edge of an excavation must spoil piles be kept?

At least 2 feet back from the edge.

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  1. Right at the edge
  2. At least 2 feet back ✔
  3. No minimum

Why: 1926.651(j)(2) says dirt and materials must be kept at least 2 feet from the edge, or held back by a retaining device, so they cannot roll into the trench.

Huh, didn't know that: Keeping spoil piles back helps prevent them from collapsing into the trench.

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Why did the spoil pile sit 2 feet back? It needed personal space.
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References

Answer: At least 2 feet back. 1926.651(j)(2) says dirt and materials must be kept at least 2 feet from the edge, or held back by a retaining device, so they cannot roll into the trench.

  1. 29 CFR 1926.651(j)(2) www.law.cornell.edu/cfr/text/29/1926.651
    placing and keeping such materials or equipment at least 2 feet (.61 m) from the edge of excavations
    Checked 2026-10-10.
  2. OSHA Trenching and Excavation fact sheet www.osha.gov/sites/default/files/publications/trench_excavation_fs.pdf
    Keep excavated soil (spoils) and other materials at least 2 feet (0.61 meters) from trench edges.
    Checked 2026-10-10.

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