Stations |
The line along which the profile is to be run is to be marked on the ground before taking any observation. Stakes are usually set at some regular interval which depends on the topography, accuracy required, nature of work, scale of plotting etc. It is usually taken to be 10 meter. In addition, stakes are placed at locations where marked changes in slope occur; a change in direction occur; at critical points like culverts, bridges and other features crossing the alignment. The beginning station of profile leveling is termed as 0+00. Points at multiples of 100m from this point are termed as full stations. Intermediate points are designated as pluses. For example, a point that is 153.25m from the beginning point of the survey is station 1+53.25 i.e., the point is 53.25m beyond the first full station. |