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Friday, August 20, 2010

Shared Positioning: Acquiring Coordinates from a CAD Link and Rotating True North

Via: http://revitclinic.typepad.com/my_weblog/2010/08/shared-positioning-acquiring-coordinates-from-a-cad-link-and-rotating-true-north.html

I want to demonstrate some examples with the acquire coordinates workflow below.
Linking a CAD file, moving into place, and acquiring coordinates to align the Revit coordinate system with the CAD file are covered in the video below.
Additionally, True North is rotated, the linked file is rotated and the updated location is pushed back to the CAD file to show the Y axis reflecting True North.  Example steps and the embedded video are below:
1.  Link CAD file Auto – Center to Center.
2.  Move link into place in project.  Manage > Acquire Coordinates.
3.  In Site view, un-clip Project Base Point and move to corner of building @ 500’,500’.  Re-clip.
4.  Rotate True North.  Then rotate CAD link the same angle to match True North rotation.
5.  Save project, and then save updated location back to CAD link when prompted.
6.  Open CAD link, verify new location was published.
7.  As final test, detach CAD link in Revit project.  Link in again by Auto – Shared Coordinates to verify link lands in correct location.

Full Size Video Link



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