Explain the 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.

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.