Get a surveying text book or check the internet to get an idea as to what I am trying to tell you. You will need to lay out the centerline at its true length on the elevation view and obviously the RAY line can no longer be used for the positions of the stations.Īlso, the elevation scale may have to be significantly scaled up if the pitch of the roadway is low otherwise the features that you try to show will be indistinguishable, that's why when you look at a set of prints, you will notice for example the manholes and catch basins and road profile to be out of proportion to the actual job site settings. If the roadway is significantly curvy you can not employ the above method. Obviously you will need a starting point with a known elevation, grade of the roaday centerline. In this video we explain how to make section/profile from contour map easily with the help of lisp.NSL program Link Description. These rays would start from the roadway centerline at station numbers. If the plan of the roadway is somewhat straight you can use the RAY command from top view to elevation view the same way as you would develop front and side views from a top view in mechanical drawings.
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