OSHA 30 Construction Excavation Questions and Answers | Latest Version | 2024/2025 | Correct & Verified

OSHA 30 Construction Excavation Questions and Answers | Latest Version | 2024/2025 | Correct & Verified What is the primary purpose of a trench box during an excavation? A. To increase excavation speed B. To protect workers from cave-ins C. To hold equipment D. To store construction materials Which is the best method to protect workers from falling into an excavation? A. Placing warning signs around the site B. Installing guardrails or fencing C. Providing a rope D. Having a safety officer on-site How deep must an excavation be before a protective system is required? A. 2 feet B. 5 feet 2 C. 10 feet D. 3 feet Which of the following is a common cause of excavation-related accidents? A. Poor communication B. Failure to wear proper clothing C. Cave-ins D. Improper work hours What should be done if the excavation's soil is determined to be unstable? A. Continue working at a slower pace B. Implement a protective system immediately C. Use heavier equipment D. Ignore the situation and proceed What is the minimum slope requirement for a trench 12 feet deep in sandy soil? A. 1:1 B. 2:1 3 C. 1.5:1 D. 3:1 Who is responsible for ensuring safety in excavations? A. The workers B. The employer C. The local government D. The equipment suppliers Which of the following equipment is typically used to perform excavation? A. Crane B. Bulldozer C. Backhoe D. Forklift What is the correct action if an excavation wall shows signs of shifting? A. Inform a coworker and continue working B. Stop work and reinforce the wall immediately