Prepare a detailed field book with proper headings for closed traverse...
Field Book for Closed Traverse Survey by Prismatic CompassSurvey Details:- Bearing in degrees (BB): 270.5°
- Readings: AB, BC, CD, DA
- Distances: 105m, 92m, 104m, 85m
Traverse Survey Data:
Line |
Bearing (BB) |
Distance (m) |
Error |
Correction |
Corrected Bearing |
---|
AB |
270.5° |
105m |
|
|
|
BC |
359° |
92m |
|
|
|
CD |
91° |
104m |
|
|
|
DA |
182.5° |
85m |
|
|
|
Calculating Internal Angles:- Internal Angle at A = 180° - (BB_AB - BB_DA) = 180° - (270.5° - 182.5°) = 92°
- Internal Angle at B = 180° - (BB_BC - BB_AB) = 180° - (359° - 270.5°) = 91.5°
- Internal Angle at C = 180° - (BB_CD - BB_BC) = 180° - (91° - 359°) = 88°
- Internal Angle at D = 180° - (BB_DA - BB_CD) = 180° - (182.5° - 91°) = 88.5°
Checking for Closing Errors:- Sum of Internal Angles = 92° + 91.5° + 88° + 88.5° = 360°
- Since the sum of internal angles is equal to 360°, there are no closing errors in the traverse.
Plotting the Traverse:- Plot the traverse using a proper scale on a graph paper, considering the starting point as A and connecting the points in the order AB, BC, CD, and DA.
Resolving Closing Errors using Bowditch's Method:- If there are closing errors in the traverse, Bowditch's method can be used to distribute the errors proportionally among the lines of the traverse.
Explanation:- The given traverse has four sides AB, BC, CD, and DA with respective bearings and distances.
- The table in