Question

State the principle of plane table survey. 

Answer 1

Principle of plane table survey

1) The principle of plane table surveying is that the rays drawn from different points should pass through a single point i.e. a position of station point.

2) Plane table surveying is based on the principle, that lines drawn during plotting always lie parallel to the corresponding lines actually present on the ground if plane table is in properly oriented position.

Answer 2

Principle of plane table survey

1. The rays drawn from different points should pass through a single point i.e. position of station point. 

2. The position of table should be same as that of previous station i.e. orientation should be done at each changed station.