# What is Surveying in Civil Engineering?

I think we all have seen this guy, standing on the roadside looking through a telescope and we might have wondered what he is doing? Well, this gentleman is called a “Surveyor” and he is performing an activity which is called “Surveying”.

**So what exactly is Surveying? **

Surveying is basically a process of locating points on Earth’s surface by finding their coordinates. These coordinates could be in the form of:

- 2 Dimensional – which tells the position of a point
- 3 Dimensional – which tells the Position as well as elevation of a point

These coordinates are essential to find the relative difference between the points. The **relative difference** simply means how high/low a point is with respect to another point or what is the distance between a point A and point B.

By surveying, we can:-

- Estimate the amount of Earthwork required for a project.
- locate a structure which is given on a construction plan, to the actual site
- Creating maps
- Locate the boundary line of our area

and so on…

Finally, the technical **definition** of surveying is:

*“The process of locating the relative positions of points on, above or beneath the surface of the Earth by direct or indirect measurements of distance, elevation, and direction.”*