Profile levelling or Longitudinal section

       This type of levelling is known as longitudinal sectioning. In high way, railway, canal or sewage line projects profile of the ground along selected routes are required. In such cases, along the route, at regular interval readings are taken and RL of various points are found. Then the section of the route is drawn to get the profile.

Profile Levelling - Video:

Profile Levelling using Autolevel - Video:

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