Surveying is defined and classified into different types based on methods, purposes, and nature of the field. The key methods include triangulation for large areas divided into a network of triangles, and traversing along linear measurements and angular directions. Surveying is used for various purposes like geological, mine, archaeological, and military surveys. It can also be classified based on the nature of the field, such as land, hydrographic, astronomical, and aerial surveys. Common tools include the plane table, theodolite, dumpy level, and total station.
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CH-2 Introduction to surveying.pptx
1. ece
Topics
Definition of Surveying
Aims & applications
Fundamental principles of surveying
Classification of surveying
Plans & Elevations
Scales
UNITS OF MEASUREMENTS
36. Classification based on methods
1.Triangulation :
. Triangulation is a method of surveying. When the
area to be surveyed is large. The entire area is
divided in to a network of Triangles.
2.Traversing:A traverse is a circuit of lines. It may be
opened or closed. When the linear measurements
are done with a chain or tape and the directions
or horizontal angles are measured with a compass
or a theodolite respectively the survey is called
Traversing
