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Chapter:
Traversing
Explain types of traverse.
In open traverse, open traverse cannot be checked directly. Cut off line can be taken.
- Taking an axillary point:
Take P permanent point as auxiliary point and measure bearing and length of P from each traverse. If survey is accurate, while plotting all the major bearing of P should meet at P.
sum of measure included angles `=(2n-4)*90 degree`
Where `n` is a number of sides of the traverse or angles.
sum of measured interior angle `=(2*n-4)*90 degree`
sum of measure exterior angles `=(2n+4)*90 degree`
Angular error=observed sum-Theoritical sum
Permissible error `=L*Csquareroot(n)`
If error is positive, correction is negative and vice versa.
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