CSLB C-27 Landscaping ContractorSafetyHard
A landscaping crew is digging a trench for an irrigation system. The trench is 3 feet deep and 18 inches wide. According to Cal/OSHA standards, what is the minimum distance that excavated material (spoil pile) must be kept from the edge of the trench?
- A4 feet
- B1 foot
- C2 feet
- D3 feet
Show answer & explanationAnswer & explanation
Correct answer: C. 2 feet
Cal/OSHA regulations (and federal OSHA) require that spoil piles and other materials be kept at least 2 feet (0.61 meters) from the edge of excavations to prevent them from falling back into the trench and injuring workers.
Why the other options are wrong
- A. 4 feet is also more than the minimum but not the required minimum distance.
- B. 1 foot is insufficient; the minimum is 2 feet to prevent material from falling back in.
- D. 3 feet is more than the minimum but not the required minimum distance.
Spoil Pile Setback
The minimum safe distance excavated material (spoil) must be kept from the edge of a trench or excavation.
- Required to prevent material from falling back into the excavation.
- Minimum distance is 2 feet (0.61 meters) from the edge.
- Helps maintain stability of the trench walls.
Memory trick: Spoil pile? Two feet back, keep the trench on track!