Lencer Akinyi
Jun 13
State sequence of steps to be followed when computing and adjusting theodolite traverse?
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ChatGPT
Jun 13
1. Set up the theodolite at the starting point of the traverse, ensuring it is level and stable.
2. Sight the first point in the traverse and record the horizontal and vertical angles measured by the theodolite.
3. Move the theodolite to the next point in the traverse, making sure it is level and stable.
4. Sight the next point and record the horizontal and vertical angles measured by the theodolite.
5. Continue this process for all points in the traverse, ensuring that each setup is level and stable before taking measurements.
6. Calculate the coordinates of each point in the traverse using the measured angles and distances between points.
7. Check the closure error of the traverse by comparing the calculated coordinates of the starting point with the coordinates of the ending point.
8. Adjust the coordinates of the traverse points to minimize the closure error, using adjustment methods such as compass rule or Bowditch rule.
9. Recalculate the coordinates of all points in the traverse after adjustment.
10. Check the closure error again to ensure that it has been minimized.
11. Record the final adjusted coordinates of all points in the traverse for use in further surveying or mapping activities.
2. Sight the first point in the traverse and record the horizontal and vertical angles measured by the theodolite.
3. Move the theodolite to the next point in the traverse, making sure it is level and stable.
4. Sight the next point and record the horizontal and vertical angles measured by the theodolite.
5. Continue this process for all points in the traverse, ensuring that each setup is level and stable before taking measurements.
6. Calculate the coordinates of each point in the traverse using the measured angles and distances between points.
7. Check the closure error of the traverse by comparing the calculated coordinates of the starting point with the coordinates of the ending point.
8. Adjust the coordinates of the traverse points to minimize the closure error, using adjustment methods such as compass rule or Bowditch rule.
9. Recalculate the coordinates of all points in the traverse after adjustment.
10. Check the closure error again to ensure that it has been minimized.
11. Record the final adjusted coordinates of all points in the traverse for use in further surveying or mapping activities.
1
Google Gemini AI
Jun 13
Steps for Computing and Adjusting a Theodolite Traverse:
1. Fieldwork:
- Measure all angles and distances along the traverse line.
- Record data in a field notebook.
2. Computation:
a. Angle Measurement Adjustment:
- Apply triple centering and double pointing corrections.
- Compute the mean of the face left and face right measurements for each angle.
- If the mean angle differs from 180° by more than 2", adjust the angles by the closing error.
b. Distance Measurement Adjustment:
- Reduce measured distances to the horizontal plane (if necessary).
- Apply any necessary corrections (e.g., for temperature, slope).
3. Traverse Calculation:
a. Latitudes and Departures:
- Calculate the latitudes and departures for each traverse leg.
- Use the adjusted angles and corrected distances.
b. Closure Error:
- Determine the latitude and departure closure errors.
- Compute the linear closure error and the angular closure error.
4. Traverse Adjustment:
a. Least Squares Adjustment:
- Use software or manual methods to adjust the latitudes and departures of the traverse legs.
- Minimize the sum of the squared residuals (errors).
b. Bowditch Adjustment:
- Apply equal corrections to each leg of the traverse to distribute the closure error proportionally.
- Correct the latitudes and departures accordingly.
5. Coordinates:
- Calculate the coordinates of each traverse station using the adjusted latitudes and departures.
- Assume a starting coordinate for the first station.
6. Report:
- Present the adjusted traverse angles, distances, latitudes, departures, and coordinates in a clear and concise report.
- Include the closure errors and the method of adjustment used.
1. Fieldwork:
- Measure all angles and distances along the traverse line.
- Record data in a field notebook.
2. Computation:
a. Angle Measurement Adjustment:
- Apply triple centering and double pointing corrections.
- Compute the mean of the face left and face right measurements for each angle.
- If the mean angle differs from 180° by more than 2", adjust the angles by the closing error.
b. Distance Measurement Adjustment:
- Reduce measured distances to the horizontal plane (if necessary).
- Apply any necessary corrections (e.g., for temperature, slope).
3. Traverse Calculation:
a. Latitudes and Departures:
- Calculate the latitudes and departures for each traverse leg.
- Use the adjusted angles and corrected distances.
b. Closure Error:
- Determine the latitude and departure closure errors.
- Compute the linear closure error and the angular closure error.
4. Traverse Adjustment:
a. Least Squares Adjustment:
- Use software or manual methods to adjust the latitudes and departures of the traverse legs.
- Minimize the sum of the squared residuals (errors).
b. Bowditch Adjustment:
- Apply equal corrections to each leg of the traverse to distribute the closure error proportionally.
- Correct the latitudes and departures accordingly.
5. Coordinates:
- Calculate the coordinates of each traverse station using the adjusted latitudes and departures.
- Assume a starting coordinate for the first station.
6. Report:
- Present the adjusted traverse angles, distances, latitudes, departures, and coordinates in a clear and concise report.
- Include the closure errors and the method of adjustment used.
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