WHAT ARE THE FORMS OF TRIANGULATION

 

FORMS OF TRIANGULATION

    In a triangulation survey, the shape and span of the area is considered. Different shapes are formed by arranging the triangles. Their detail is as under:

1.    Chain of Single Triangles.

 

     If an area is in the form of a Narrow Strip, then a chain of triangles is formed. In this way, survey work can be completed soon. But the quality of survey is not up to the mark. This shape of triangles is not of much importance. However, this survey is not costly.

2.    Chain of Double Triangles.

 

    If an area is in the form of a Narrow Strip, and the survey is needed accurately then a double chain of triangles is arranged. In it, the length of the common middle line segment is calculated with the help of the two triangles. In this way, the survey can be checked desirably.

3.    Chain of Quadrilaterals.

 

    In the triangular survey, such types of triangles are very much suitable for good results. The area for survey is arranged in such chain of triangles that the continuous chain of triangles in the form of quadrilaterals is given. In such arrangements, the diagonals of the quadrilaterals are directed inside. No station is set up at the intersection points of these diagonals. In this way, survey work is carried out successfully with less cost.

4.    Chain of Hexagons.

 

    In this triangulation survey, sis triangles are so adjusted that they form a hexagon. Then another hexagon is connected to this hexagon. In fact, this forms a Triple Chain of triangles. In this way, a Survey is carried out successfully with much quality and less cost.

5.    Grid Iron System.

     The triangles are in this way if the survey is needed for a vast area. For Example, Survey of any Country or Province. In this system, the triangles are set in such a way that on continuous series of triangles is there for North-South and the other for East-West Direction. In this way, the whole area is covered in triangles and quadrilaterals. This method is suitable in respect of work but is costs much.