What are the factors that determine selection of excavation method?

What are the method of excavation?

Techniques used to find a site may include remote sensing (for example, by aerial photography), soil surveys, and walk-through or surface surveys. The digging of shovel tests, augured core samples and, less commonly, trenches may also be used to locate archaeological sites.

What are the factors affecting the choice of particular method of site exploration?


The choice of a particular exploration method depends on the following factors: (a) nature of ground (b) topography and (c) cost. In clayey soils, borings are suitable for deep exploration and pits for shallow exploration.

What are the reasons for excavation?

Excavation has a number of important applications including exploration, environmental restoration, mining and construction. Among these, construction is one of the most common applications for excavation. Excavation is used in construction to create building foundations, reservoirs and roads.

What is a dewatering system?

Dewatering is the process of removing groundwater and superficial water from a construction site. Usually, this procedure is carried out before excavations, or to lower the water table on site. Dewatering methods can use pumps or evaporation.

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What are two factors which affect the planning and cost of earthworks?

While there are many factors, here are the 6 key factors which affect the construction cost estimate:

  • Construction Material Costs.
  • Construction Site Conditions.
  • Inflation Factor.
  • Regulatory Requirements.
  • Location of Construction.
  • Engineering Review.

What is excavation and types?

A common method of classifying excavation is by type of excavated material: topsoil, earth, rock, muck, and unclassified. Topsoil excavation is removal of the exposed layer of the earth’s surface, including vegetation. … Rock excavation is removal of a formation that cannot be excavated without drilling and blasting.

What are two types of excavation techniques?

A trench is a type of excavation that is generally deeper than it is wide at the top.


  • Shielding.
  • Shoring.
  • Benching.
  • Battering.

What are the main boring methods?

The different types of boring methods are:

  • Displacement boring.
  • Wash boring.
  • Auger boring.
  • Rotary drilling.
  • Percussion drilling.
  • Continuous sampling.

What are the different methods of site exploration?

The various methods of site exploration may be grouped as follows:

  • Open excavations. Trial pits are tho cheapest method of exploration in shallow deposits, since these can be used in all types of soils. …
  • Borings. …
  • Sub-surface soundings. …
  • Geo-physical methods.

What are the disadvantages of wash boring?

Some of the disadvantages of wash boring are:

The method is slow in the stiffer and coarse-grained soils and is not efficient in materials such as hard or cemented soils, rock, and soils that contain boulders.

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