Land Survey

Contour mapping

A civil engineer studies the contours and finds out the nature of the ground to identify suitable site for the project works to be taken up. By drawing the section in the plan, it is possible to find out profile of the ground along that line. It helps in finding out depth of cutting and filling, if formation level of road/railway is decided. Intervisibility of any two points can be found by drawing profile of the ground along that line. The routes of the railway, road, canal or sewer lines can be decided so as to minimize and balance earthworks. This study is very important in locating bunds, dams and also to find out flood levels.