VALUER WORLD

Edit Content
Click on the Edit Content button to edit/add the content.
Edit Content
Click on the Edit Content button to edit/add the content.

# CONTOUR LINE AND METHODS OF CONTOURING IN SURVEYING

CONTOUR LINE AND METHODS OF CONTOURING IN SURVEYING

Contouring is an important aspect of surveying which basically involves the determination of the elevation of various points on the ground followed by fixing the points of the same horizontal positions in the contour map.

A contour may be defined as an imaginary line that passes through the points of equal elevation. It is a line in which the surface of the ground is intersected by a level surface.

A Contour line may be defined as an imaginary line passing through the points of equal devotion. A contour line may also be defined as the intersection of a level surface with the surface of the earth. When the contours are drawn underwater, they are termed as Submarine Contours, Fathoms or Bathymetric Curves. This is the best method of representation of features such as hills, depressions, underwater etc on a two dimensional paper.

Purposes of Contouring:

A contour map is very useful since it provide valuable information about the land. Contour survey is carried out at the starting of any engineering project such as a road, a railway, a canal, a dam, a building etc.

(a) For large scale maps of flat country, for building sites for detailed design work and for calculation of quantities of earth work: 0.2 to 0.5 m.

(b) For reservoirs and town planning schemes: 0.5 to 2 m.

(c) For location surveys: 2 to 3 m.

(d) For small scale maps of broken country and General topographical work : 3 m, 5 m, 10 m or 25 m……………..

CLICK BELOW FOR MORE DETAILS

FOR MANY MORE  UPDATES AVAILABLE CLICK BELOW

SOME CONTENTS OF THIS WEBSITE ARE FOR GOLD SUBSCRIBERS ONLY.

CEV LIBRARY GOLD SUBSCRIPTION

KIND ATTENTION
We are going to close all what’s groups of CEV soon due to difficulties in posting information or message in more than 5 groups of CEV at a time.

All future posts of empanelment notices & professional importance will be shared on
1.
https://t.me/+dbHNkNO22xsyYTY1
2.
www.valuerworld.com
3. The Twitter handle of CEV India