Scales used in Surveying | Engineering Surveys

Scales | Engineering Surveying

Scale is a fixed ratio that every distance on the plan bears with corresponding distance on the ground.

Rulers bearing a certain specific scale for measurement
Rulers bearing a certain specific scale for measurement

Scale can be represented by the following method

One centimetre on the plan represents some whole number of the metres on the ground.

1cm = 10m

This type of scale is called engineering scale.

1 unit of length on the plan represents some number of same units of length on the ground.

1/1000 etc…

This ratio of map distance to the corresponding ground distance independent of units of measurement is called Representative Factor (RF).

For example,

1cm = 50m

RF = 1/(50×100) = 1/5000

Above two types of scales are also known as numerical scales.

Read more

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

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

Read more

Classification of Surveys according to the methods Employed in Surveying

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: Triangulation Survey Transverse … Read more

Classification of Surveys and Surveying Methods in Engineering

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.

Read more