OSHA 10 Lesson Assessment 7 Questions and Answers | Latest Version | 2024/2025 | Correct & Verified

OSHA 10 Lesson Assessment 7 Questions and Answers | Latest Version | 2024/2025 | Correct & Verified What is the primary hazard associated with excavation work? Cave-ins Why is soil classification important before excavation? To determine the appropriate protective system What is the maximum allowable slope for Type C soil? 34 degrees Who is responsible for inspecting excavations daily? A competent person What is a protective system used to prevent cave-ins? Shoring 2 When must excavations be inspected? Before each shift and after rainstorms Why is it dangerous to place materials near the edge of an excavation? They can fall and cause cave-ins or injuries What is the purpose of benching in excavation? To create steps and reduce the risk of collapse What is considered a confined space in excavation? A trench deeper than 4 feet with limited entry When should a trench box be used? In excavations deeper than 5 feet Why is water accumulation in an excavation hazardous? It increases the risk of cave-ins and drowning 3 What should be done if hazardous atmospheres are detected in an excavation? Stop work and ventilate the area Why is it important to locate underground utilities before digging? To prevent accidents and service disruptions What is the safest way to enter and exit an excavation? Using ladders or other safe access points Who determines the protective system needed for an excavation? A competent person Why is it unsafe to work in an unprotected trench? There is a high risk of cave-ins and suffocation What is the minimum distance spoil piles should be kept from the edge of an excavation? At least 2 feet 4 Why must excavation walls be supported in certain conditions? To prevent them from collapsing What is a trench shield designed to do?