UPPSC State Engg. A.E. 2008 / ESE 1996
⭕ A. Radiation method
⭕ B. Intersection method
⭕ C. Resection method
⭕ D. Traversing method
📚 Explanation:
The method of plane tabling commonly used for establishing the instrument station is the Resection Method.
🔹 **Resection** is the process of locating the position of the plane table station by taking sights to known, already-plotted points.
🔹 It is the most reliable technique for establishing a new instrument station.
Radiation Method:
Used when the instrument is set at a known position and rays are drawn to plot nearby points. Suitable for small areas.
Intersection Method:
Used to locate distant points by sighting from two known stations.
Traversing Method:
Similar to compass/theodolite traversing; used for long narrow areas such as roads or railways.
The method of plane tabling commonly used for establishing the instrument station is the Resection Method.
🔹 **Resection** is the process of locating the position of the plane table station by taking sights to known, already-plotted points.
🔹 It is the most reliable technique for establishing a new instrument station.
Radiation Method:
Used when the instrument is set at a known position and rays are drawn to plot nearby points. Suitable for small areas.
Intersection Method:
Used to locate distant points by sighting from two known stations.
Traversing Method:
Similar to compass/theodolite traversing; used for long narrow areas such as roads or railways.
👉 Therefore, the correct answer is: C. Resection method
Key Points on Plane Table Methods:
- Resection: Establishes instrument station by sighting known points.
- Radiation: Used to plot nearby points from a known station.
- Traversing: Suitable for surveying narrow strips of land.
