Classification of Surveys

Classification of surveys according to their Purpose | Civil Engineering

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Classification of  Surveys according to their Purpose

In our previous article, we discussed division and classification of surveys based on various factors such as Purpose, instruments, field of work, method of work etc.

In this article, we will discuss different types of surveys carried out for various purposes in the field of Surveying…

Mine Survey

Mine survey involves exploration of mineral wealth in the country. This would include minerals such as Gold, copper, coal, silver etc. between the earth’s crust.

Mine Survey
Mine Survey

Geological Survey

Geological Survey is carried out by geologists. It is usually for the purpose of the study of earth’s rock structure. It helps to determine different strata in the earth’s crust.

Archaeological Survey

As the name suggests, Archaeological Survey is carried out by the Archaeologists for the purpose of their study concerning the past. This survey helps to trace the relics of the past.

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Classification of Surveys according to their field of Work | Engineering Surveying

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Classification of Surveys according to the field of work | Surveying and Levelling

In one of my previous articles regarding “Classification of Surveys“, discussion of various types of surveys have been listed out. We are now proceeding with the detail study of different types of surveys under the category of field of work.

The classification for the field of work is as follows:

Land Survey

This involved survey of objects in earth’s surface.

German Soldier carrying out Land Survey to determine the natural features and determine areas of strategic importance
German Soldier carrying out Land Survey to determine the natural features and determine areas of strategic importance

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Classification of Surveys according to the methods Employed in Surveying

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Classification of Surveys according to the methods employed | Civil Engineering

In our previous articles, we discussed classification of Surveys according to their purpose in Surveying. Now we will go on with the discussion on classification of surveys according to the method of work.

Here are the two methods employed for Surveying:

  1. Triangulation Survey
  2. Transverse Survey

Triangulation Survey

The selected survey stations are connected with survey lines in such a way resulting in the formation of network of triangles. This survey is useful in surveying larger areas with uneven site boundaries.

The various formulas of the triangle are used to determine and area and various dimensions of the site.

Right angled triangle - (A = 1/2*base*height)
Right angled triangle - (A = 1/2*base*height)

Transverse Survey

The whole area is divided into various transverses for the easy surveying. Since this method involves division of survey area into various transverse, it is termed as Transverse Survey.

A transverse is a geometrical figure consisting of more than three sides.

Classification of Surveys and Surveying Methods in Engineering

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Classification of Survey

Study of classification of surveys is a major part of the study of Surveying as a whole. The surveys are conducted using various different instruments. The use of instruments depend upon its availability and suitability to the site.

Surveys are classified as following:

  1. According to the instruments used for the survey
  2. According to the purpose of the survey
  3. According to the method employed for the survey
  4. According to the field of work

In this article, we will list out the classification in each and category and study them in detail…

According to the instruments used

Chain Survey

Chain Survey is conducted using different lengths of chains specifically made for the surveying purpose.

Compass Survey

As the name itself suggests, the compass is used for the purpose of the survey.

Plane table Survey

Plane table is used for the purpose.

Levelling

Theodolite Survey

Theodolite is an instrument that is useful for conducting accurate surveys.

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