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I am new to microstation. So kindly bear my ignorance and offer me help. I have a .dgn file of a major highway interchange from which I have to extract profile information of the roads. Is it possible to extract .tin file from a .dgn file ?The file has lot of layers in it. Also there are texts in drawing, like " name_of_road.tin". Does this mean that the tin file is associated with the .dgn file. ?
I can upload some screen shots of the .dgn file but i dont see an attach option in this thread.
Typically, TINs are stored in separate files (GEOPAK uses .tin extension). Although, it is a fairly common practice to transmit a TIN by "drawing" the triangles into a drawing file, which would then need to be re-composed into a TIN by the consumer for any further TIN processing. This is because different civil softwares often can't read each other's TIN file formats.
GEOPAK (and I assume every other civil package) can extract ground profiles from TINs (each civil package probably has its own proprietary TIN format, although many now support LandXML as a platform-neutral data exchange format, suitable for surface models and other typical civil data).
Plain MicroStation might have some tools in the mesh or surface tool sets that would allow you to 'cut' a 'profile' from a mesh element or surface, so if you have the actual triangles in your drawing you might be able to get by without a civil package.
GEOPAK has the ability to read 2D data and use it to create a TIN (it's called the "Extract Graphics" DTM tool). For example, if you have spot elevations labeled in a DGN, Extract Graphics can create a point for each piece of text using the x and y values of the text's insertion point, and the z value from the text value itself.
Hope that helps somewhat. If you can provide more details about the file you have, I or someone else may be able to provide more directed assistance.
Also, take a look here: communities.bentley.com/.../be-communities-forums-help.aspx
Thank you for the reply. I have the existing conditions data( roads, bridges) given in a .dgn file. I am supposed to extract profile information of all the roads from this .dgn file and re-create the existing conditions in autocad civil 3d.
These are the screenshots of the model. Is there any way to extract profile information from this .dgn file?
Why don't you use autocad civil 3d. to extract the profile data?
What do you mean with "extract"?
Do you need profiles plans or some reports?
What Bentley Civil application do you use?
since 1985: GIS/CAD Consultant/Developer : [Esri ArcMap, AutoCad, Bentley MS V4 - V8i, GeoGraphics, Map, InRoads HHK Geograf, IBr DAVID, AED-SICAD-Utilities ] Dev: [C, C++, Basic , Java, SQL, FORTRAN, UML][direct quote by: http://en.wikipedia.org/wiki/Helmut_Schmidt]: "Wer Kritik übel nimmt, hat etwas zu verbergen"Wer Grammatik- und/oder Rechtschreibfehler findet, der darf sie behalten :-)
Are you trying to re-create (reverse engineer) the road design in AutoCAD C3D, or just trying to create a ground triangulation for the existing situation - through which you then want to take profiles?
@ Frank - Yes. I need profile plans of the roads and bridges. I am Microstation V8i
@ Mark - Yes. I am trying to recreate the existing roads in autocad civil 3d. I have created alignments and intersections. I need profile plans of the roads to make the model complete. My source has given me .dgn file and asked me to use the file to get the profile plans, which I am not able to do.