Difference Between Plane and Geodetic Surveying 
Sl.No:

Plane
Surveying 
Geodetic
Surveying 
1 
Plane
surveying is a surveying performed by considering the mean surface of the
earth as plane. 
Geodetic
surveying is a surveying in which the mean surface of the earth is considered
as spherical. 
2 
The
plumb bob lines passing through the points are parallel to each other in
plane surveying. 
Plumb
bob lines passing through the points intercept at the centre of the earth in
geodetic surveying. 
3 
The
lines that are formed by joining two points on earth during plane surveying
is considered as straight lines. 
The
lines that are formed by joining two points on earth surface during geodetic
surveying is curved lines or arc lines. 
4 
Hence,
the triangles formed in plane surveying are plane triangles. 
The
triangles formed in geodetic surveying are spherical triangles. 
5 
The
triangles formed are solved using the knowledge of plane trigonometry. 
In
geodetic surveying, the triangles are solved using the knowledge of spherical
trigonometry. 
6 
Plane
surveying is performed by using normal survey and measuring instruments like
chain, theodolite, measuring tape etc. 
Geodetic
surveying make use of more sophisticated and precise instruments and modern
technology 
7 
The
measurement accuracy is low compared to geodetic survey. 
Geodetic
surveying possess higher degree of accuracy. 
8 
Plane
surveying is employed for areas less than 260km^{2}. 
Geodetic
surveying is employed for areas greater than 260km^{2}. 
9 
Plane
surveying is used for general civil engineering survey projects. These
are used to perform less precision works and locate points with respect to
control stations that are obtained through geodetic surveying. 
Geodetic
survey is used to locate precise positions of distant areas. Most of the
points determined and located forms the control stations. 
10 
Plane
surveying is performed by individual organization or firms for performing a construction
project. 
Geodetic
surveying is performed by governments and state departments. 
11 
Plane
Surveying is easy and economical. 
Geodetic
surveying is complex and hence costly type of surveying. 
it was really helpful
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