Plane tabling — which procedure provides the most distinctive and accurate method of orienting the plane table at an unknown station? Read each technique and choose the one that uniquely serves accurate orientation on the job site.

Introduction / Context:
Plane tabling is a rapid field-plotting method used in engineering surveying. A critical step is orientation: setting the table so that plotted lines are parallel to their corresponding ground directions. Among several procedures (radiation, intersection, traversing, resection), one is especially distinctive for obtaining accurate orientation at an unknown point without needing a prior oriented line through that station.

Given Data / Assumptions:

• An unknown occupied station must be oriented on an existing plotted control.
• Visible control points around the station can be sighted.
• Accuracy and practicality in the field are key.

Concept / Approach:
Resection determines the position and orientation of the plane table by sighting two or more well-defined control points already plotted on the sheet. By solving the geometrical problem of back rays (e.g., two- or three-point resection), the orientation is fixed accurately. Other methods (radiation, intersection, traversing) either require the table to be already oriented or are primarily meant for plotting new points rather than establishing orientation at an unknown station.

Step-by-Step Solution:

Verification / Alternative check:
Three-point resection offers a strong geometric check; if small triangle of error forms, orientation is refined until it collapses to a point, confirming accuracy.

Why Other Options Are Wrong:

• Radiation: Plots detail from a known, oriented station; not primarily for orientation at an unknown point.
• Intersection: Locates new points by intersecting rays; orientation still needed first.
• Traversing: Extends control but assumes prior orientation at each setup.

Common Pitfalls:
Using poorly distributed control points (acute angles) in resection; choose well-spread points to minimize error.

Final Answer:
Resection