Question

The plotting of small areas, which can be commanded from a single station, is usually done on the plane table by the method of
1. radiation
2. intersection
3. traversing
4. resection

Answer 1

Correct Answer - Option 1 : radiation

The different type of plane table survey methods and their suitability is given below in tabulated form:

Plane Table survey Method	Suitability
Radiation	This method is suitable for the survey of small areas which can be commanded from a single station.
Intersection	This method is largely employed for locating the points to be used subsequently as instrument stations, for plotting the distant and inaccessible objects, the broken boundaries of the river etc.  It is much suitable for surveying hilly country where it is difficult to measure the horizontal distances.
Traversing	It is used for running survey lines of a closed or open traverse.
Resection	This method is used for locating the station points only.