Excavations: Knowledge Check (OSHA 10-Hour Construction Outreach)

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1. Page 1

   10-hour Construction Outreach

   • Name: ___
   • Date: ___
   • Knowledge Check: Excavations
   • 1. What is the minimum distance that excavation materials, tools, and other supplies be kept back from the excavation’s edge?
   • a. 1 foot
   • b. 2 feet
   • c. 7.5 feet
   • d. 25 feet
   • 2. At what depth must a ladder, ramp, steps, or runway be present for quick worker exit?
   • a. 4 feet
   • b. 5 feet
   • c. 10 feet
   • d. It is never required
   • 3. What is the greatest hazard facing a worker while working in a trench?
   • a. Hazardous atmospheres
   • b. Falls
   • c. Cave-ins
   • d. Falling objects
   • 4. Unless made in entirely stable rock, at what depth is a protective system required for a trench?
   • a. Any depth if the competent person says so
   • b. 5 feet and greater
   • c. Only at depths greater than 10 feet
   • d. Both a and b
   • Created by OTIEC Outreach Workgroup 05/18/2015