What are the three main protection methods?

What are three protective measures to prevent trench collapses that OSHA recognizes?

3 Protective Measures That Minimize the Risk of Trench Collapses

  • Shore the Trench’s Perimeter to Hold Back Potential Cave-ins. …
  • Shield the Workers with Trench Boxes. …
  • Slope the Trench Walls to Reduce Dangerously Steep Walls.

What are the three main protection methods against cave-ins quizlet?

The greatest risk in an excavation is a cave-in. 2. Employees can be protected through sloping, shielding, and shoring the excavation. 3.

What are the standard methods of cave in protection?

There are two basic methods of protecting workers against cave-ins:

  • Sloping.
  • Temporary protective structures (e.g., shoring, trench boxes, pre-fabricated systems, hydraulic systems, engineering systems, etc.)

How do you protect deep excavation?

Falling or dislodging material. Loose materials – may fall from spoil heaps into the excavation. Edge protection should include toeboards or other means, such as projecting trench sheets or box sides to protect against falling materials. Head protection should be worn.

What is the greatest danger associated with excavations?

Cave-ins pose the greatest risk and are more likely than some other excavation-related incidents to result in worker fatalities. One cubic yard of soil can weigh as much as a car.

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How do you stop a trench from collapsing?

Trench collapse risks can be minimized by shifting the soil weight away from the trench opening. Trench collapses can also be minimised by placing trench sheets on both sides of the trench.