What are the checks applied in case of closed traverse?

1 Answer

Answer :

The errors involved in traverse are of two types: angular and linear. For important traverse angular values are checked by doubling the angles and linear measurements by chain and tape.

Check For Angular Measurements:

a) Traverse by included angles

i) The sum of measured included angles should be (2n - 4) x 90°

ii) The sum of measured exterior angles should be (2n + 4) x 90°

where n is number of sides. 

b) Traverse by deflection angles

The sum of measured deflection angles should be 360° considering the left deflection angles as negative (- ve) and right deflection angles as positive (+ ve).

c) Traverse by observation of bearings

The fore bearing of the last line should be equal to ±180°. 

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