3. Examples

a. Traverse 1

(1) Forward Computation

 Figure F-10 Loop Traverse Forward Computation

 Adjusted Line Lat (ft) Dep (ft) AB -176.386 -438.574 BC +203.382 -73.105 CD +192.340 +198.635 DE -219.336 +313.044

The coordinates of point A are 500.000' N, 2000.000' E. Compute the coordinates of the remaining points.

A simple way is to set up a table with North coordinates and latitudes in one column, East coordinates and departures in another.

(2) Inverse Computation

What are the length ad bearing of the line A to C in the diagram below?

 Figure F-11 Length anf Direction Determination

From Equations F-5 and F-6:

Substituting into Equation F-7

and Equation F-8

Because ΔN is North and ΔE is West: N86°58'47.6"W

Line AC: 512.39' at N86°58'48"W

b. Traverse 2

(1) Forward Computation

The crossing traverse in Figure F-12 was previously adjusted with the results shown below.

 Figure F-12 Crossing Traverse Forward Computation

The coordinates of point E are 200.000' X, 1000.000' Y.

Compute the coordinates of the remaining points.

Arranging the computations in a table:

(2) Inverse Computation

Determine the length and azimuth of the line from point F to point H.

Remember: Y=>N, X=>E; and it's To minus From.

Because ΔY is North and ΔX is West:

Line FH: 275.25' and azimuth of 270°40'49".