Topographical & Contour Survey
Topographical surveys or land surveys are an accurate representation of the area of interest showing all natural and manmade features with levels. Shown as three dimensional points all features including the property, land features and physical boundary details are presented on a scaled survey drawing.
Methods of Contouring Direct Method. In the direct method of contouring, the reduced level of various selected points on a contour line are obtained and their positions are located. The contours are then drawn by joining these points. It is a very accurate method but it is slow and tedious.
