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OpenBuildings | AECOsim | Speedikon Wiki Railings exported to DWG display a flattened 2D version
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    Railings exported to DWG display a flattened 2D version

      Product(s): OpenBuildings Designer 
      Version(s): CONNECT Edition
      Area:  Import/Export
      Subarea:  DWG

    Problem

    When I export a 3D model with stairs and railings to DWG and open the file in MicroStation or AutoCAD, a flat 2D version of the railing is displayed at an elevation of 0 regardless of where the railing itself exists.

    How can I export railings to DWG without seeing that 2D version?

    Solution

    The 2D projection seen in DWG format is actually the railing's embedded 2D symbol used by the drawing composition workflow.

    This symbol is handled internally by OpenBuildings Designer, so will be visible if the DWG file is opened in any other application when the Save Application Data option is enabled under the Save As DWG > Advanced options. This has been filed as Defect 901968 and is scheduled to be resolved in a future release.


    However, one way to achieve the desired result is to first publish the DGN file to an iModel (i.dgn), open that i.dgn in OpenBuildings Designer, and then export it to DWG. The result should look like this:

    Because the 2D symbol is not saved when publishing the i.dgn file it’s also removed when exporting to DWG. At the same time, because the railing's DataGroup properties are mapped to Item Types during the imodel publish command the railing's properties are still available in DWG format:

    • Import/Export
    • DWG export
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    • Railing
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    • Steve Cocchi Created by Bentley Colleague Communities MVP Steve Cocchi
    • When: Wed, Nov 23 2022 2:15 PM
    • Steve Cocchi Last revision by Bentley Colleague Communities MVP Steve Cocchi
    • When: Wed, Nov 23 2022 2:25 PM
    • Revisions: 5
    • Comments: 0
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