Construction Cost Estimating

      

Lecture on Operations In Levelling

In this article we are going to discuss about levelling which is a branch of surveying. Well, before approaching towards the lecture we need to know what is levelling?

Levelling:
Levelling is defined as "an art of determining relative height of different points on, above or below the surface".

Principle Of Levelling:
The principle of leveling is to acquire horizontal line of sight regarding which vertical distances of the points above or below this line of sight are found.

Objective Of Levelling :

  • To detect the elevation of the given point regarding some supposed reference line which is called datum.
  • To set up point at necessary elevation respect to datum.

Terms used in leveling:

  • Level Surface
  • Level Line
  • Horizontal Plane
  • Horizontal Line

Now watch the video lecture with nice demonstration to know the detailed operations in leveling.

Lecture on Operations In Levelling