What are the three methods to protect workers from collapsing excavations?

What are the three methods to protect workers from collapsing excavations?

OSHA recognizes three methods to protect workers from collapsing excavations. They are: Sloping, Shoring systems, Shielding.

Whose responsibility is it to protect workers from caves in other excavation related hazards?

OSHA requires inspection of the excavation site and adjoining areas for possible cave-ins, failures of protective equipment and systems, hazardous atmospheres, and other hazardous conditions. Cave-ins pose the greatest danger to all excavation workers.

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.

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 is the purpose of excavation?

Excavation is used in construction to create building foundations, reservoirs and roads. Some of the different processes used in excavation include trenching, digging, dredging and site development. Each of these processes requires unique techniques, tools and machinery to get the job done right.

Which type of soil Cannot be benched?

Examples include granular soils such as gravel, sand and loamy sand; submerged soil or soil from which water is freely seeping; and submerged rock that is not stable. Benching Type C soil is unacceptable and shall not be done.

What does benching mean?


What are the methods of timbering?

Methods of Timbering:

  • Stay Bracing.
  • Box Sheeting.
  • Vertical Sheeting.
  • Runners.
  • Sheet Piling.

What is the shoring in construction?

Shoring, form of prop or support, usually temporary, that is used during the repair or original construction of buildings and in excavations. Temporary support may be required, for example, to relieve the load on a masonry wall while it is repaired or reinforced.

What is timbering of excavation?

When the depth of trench is large, or when the sub-soil is loose, the sides of the trench may cave in. Timbering of trenches, sometimes also known as shoring consists of providing timber planks or boards and struts to give temporary support to the sides of the trench. …

What is timbering and strutting?

A method of giving the temporary support to the side of deep trench or when subsoil is loose or very soft is known as timbering (i.e. shoring) and strutting. It consists of timber planks and strut to give temporary support to the side of trench.

What does strutting mean?

adjective. walking or moving with a strut; walking pompously; pompous.

What is stay bracing?

Stay bracing When the trench soil is firm and the depth of excavation does not exceed 2.0 meters, this method is used for supporting the sides of a trench.

What is trench strutting?

The main function of a trench strut is to support the wall of a trench. However, they can also be used in other building or DIY construction as they can be used horizontally, which a regular steel adjustable prop cannot. For this reason, they are often used as a horizontal support in wall construction.

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