About Lesson
Traverse Plotting
After correcting the observed bearings, traverse plotting can be done using two main methods:
A. By Parallel Meridian:
- Select a point A on the paper and draw a line representing the north (meridian) through A.
- Plot the bearing of the line AB using a protractor and its length according to a suitable scale.
- At station B, draw a north line parallel to the one at A.
- Plot the bearing of the line BC and its length using the same scale.
- Repeat this process for all stations along the traverse.
- If the traverse is closed, check for any closing error, which must be adjusted graphically.
B. By Included Angles:
- Select a point A on the paper and draw a north line (meridian) through A.
- Plot the bearing of line AB with a protractor and plot its length to scale.
- At station B, plot the included angle <B, then plot the distance BC to the chosen scale.
- Similarly, plot the included angle at C and the line CD.
- Continue this process for all stations.
- As with the parallel meridian method, if there is a closing error, adjust it graphically.