Aquaculture Engineering

Unit 1- Surveying

Classification of surveying
Primarily surveying can be divided into two classes

Plane surveying: Is the type of surveying in which the mean surface of the earth is considered as a plane surface and the spheroidal shape is neglected. All triangles formed by survey lines are considered as plane triangles. The level lines are considered as straight and all plumb lines are considered as parallel.

Geodetic surveying: Is the type of surveying in which the shape of the earth is taken into account. The lines lying on the surface are considered as curved lines. The triangles formed by survey lines are considered as spherical triangles. All Geodetic survey includes the work of large magnitude and high degree of precision.