Classification of Surveying

Surveying is classified by

1. Plane surveying
2. Geodetic surveying

Plane surveying

• For small projects covering Area less than 195 sq.km.
• Earth curvature is not counted for in distances.
• Earth surface is considered as plane.
• Points are visible from one another.

Geodetic surveying

• When survey extends over a large areas more than 195 sq. km.
• Degree of accuracy required is also great.
• The curvature of earth is also taken into account.