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Theodolite traversing, uses of theodolite traversing, types and methods of theodolite traversing, theodolite traversing by included angle method.

 A traverse is a series of connected kines whose lengths and directions are measured in the field. 

The system of surveying in which the angles are measured with the help of a theodolite, is called theodolite surveying. 

* Different method of traversing:-

      1. Traversing by included angles 

      2. Traversing by deflection angles 


1. Traversing by included angles:-

  • This method is more accurate than the fast needle method. 
  • In fat needle method the magnetic bearing of traverse lines are measured by a theodolite fitted with a compass. 
  • Traversing by the method of included angle is most commonly used. 
  • In this method the magnetic bearing of any lines is measured in the field. 

     Procedure:-

  • Setup the theodolite A.
  • Observed ther bearing of line AB.

Theodolite traversing, uses of theodolite traversing, types and methods of theodolite traversing, theodolite traversing by included angle method.

  • Then the angle EAB is measured taking back sight on E and fore sight on B turning ther telescope clockwise. 
  • Take both face reading to eliminate error and for accuracy work use repetition method. 
  • The instrument is then shifted ti each of the successive stations B, C, D and E and the included angles are measured. The length of AB, BC, CD...... are measured with tape or chain. 

2. Traversing by deflection angle:-

                  
Theodolite traversing, uses of theodolite traversing, types and methods of theodolite traversing, theodolite traversing by included angle method.



 This method is suitable for open traverse and is mostly employed in the survey of rivers, roads, railways, canals, etc.


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