Often asked: Which Of The Following Ways To Avoid Excavation Hazards Was Mentioned In The Construction Etool?

How can we prevent excavation?

Provide protection by:

  1. Set spoils and equipment at least 2 feet back from the excavation.
  2. Use retaining devices, such as a trench box that will extend above the top of the trench to prevent equipment and spoils from falling back into the excavation.

Which of the following is an excavation hazard?

Other excavation hazards include water accumulation, oxygen deficiency, toxic fumes, falls, and mobile equipment.

What are the major types of excavation hazards in construction?

Top 5 excavation safety hazards

  • Cave-ins. Trench collapses kill an average of two workers every month, making this a serious threat to worker safety.
  • Falls and falling loads. Workers and work equipment can fall into an excavated area.
  • Hazardous atmospheres.
  • Mobile equipment.
  • Hitting utility lines.

What is the main hazard when working in an excavation?

Every year people are killed or seriously injured by collapses and falling materials while working in excavations. They are at risk from: Excavations collapsing and burying or injuring people working in them; material falling from the sides into any excavation; and.

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What is the importance of excavation?

Excavations can be classified, from the point of view of their purpose, as planned, rescue, or accidental. Most important excavations are the result of a prepared plan—that is to say, their purpose is to locate buried evidence about an archaeological site.

What are the safety precautions in excavation work?

Excavation safety Precautions:

Adapting soil protection method like stepping, sloping, shoring and close sheeting. If excavation reached more than 3 meter, shoring or close sheeting shall be done. Adequate barricade and excavation sign board. Gas test inside excavation before job.

What is hazard in excavation?

More excavation-related hazards

falls into trenches or excavations. tripping over equipment, debris and spoil. excavated material or other objects falling on workers. exposure to underground services or overhead electrical cables. unstable adjacent structures.

Is fire a hazard associated with excavations?

If you are not using protective systems or equipment while working in trenches or excavations at your site, you are in danger of suffocating, inhaling toxic materials, fire, drowning, or being crushed by a cave-in.

What is trenching and excavation?

Excavation and trenching are among the most hazardous construction operations. OSHA defines an excavation as any man-made cut, cavity, trench, or depression in the Earth’s surface formed by earth removal. A trench is defined as a narrow excavation (in relation to its length) made below the surface of the ground.

What are the types of excavation?

Excavation by Material

  • Topsoil Excavation. As the name suggests, this type of excavation involves the removal of the exposed or the topmost area of the earth’s surface.
  • Rock Excavation.
  • Muck Excavation.
  • Earth Excavation.
  • Cut and Fill Excavation.
  • Trench Excavation.
  • Basement Excavation.
  • Dredging.
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What is meant by shoring?

Shoring is the process of temporarily supporting a building, vessel, structure, or trench with shores (props) when in danger of collapse or during repairs or alterations. Shoring comes from shore, a timber or metal prop. Shoring may be vertical, angled, or horizontal.

What are common test methods used for soil classification?

You will also see how to test the soil using three of the most common methods: the plasticity test, the thumb penetration test, and the pocket penetrometer test. For best results, OSHA recommends that the competent person use more than one of these methods to test the soil.

What is shoring in excavation?

Shoring Types. Shoring is the provision of a support system for trench faces used to prevent movement of soil, underground utilities, roadways, and foundations. Shoring or shielding is used when the location or depth of the cut makes sloping back to the maximum allowable slope impractical.

How deep can you Excavation without shoring?

Trenches 5 feet (1.5 meters) deep or greater require a protective system unless the excavation is made entirely in stable rock. If less than 5 feet deep, a competent person may determine that a protective system is not required.

What is excavation work permit?

Excavation permit is required for carrying out any excavation inside plant. Wherever temporary closure of road / cutting of road or blockage of main roads is required in a section or unit. The necessary approval shall be obtained in proper format for “Road or Site Closure”.

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