We had a support case from a client who was trying to use Shared Coordinates on their project but kept crashing the project. Upon closer inspection of the project, they had found that they had deleted the Project Base Point and the Survey Point for their Revit project. Now you cannot simply highlight these items and delete them, the process is a little more involved.
When a Revit project is opened to using Worksharing, Grid lines and Layers are assigned to a Workset named Shared Levels and Grids, all other geometry/elements are assigned to a Workset named Workset 1. This includes the Project Base Point and the Survey Point. If these items are selected you can reassign the Workset they belong to just like all other geometry/elements. Assigning these two points to a new Workset now allows the elements to be deleted if the Workset is deleted. This evidently was what happened to our client. With no Project Base Point or Survey Point, the Shared Coordinates did not know how to work causing the file to crash.
The only recourse we could find, was to start a new project, and begin the laborious task of copy/pasting geometry/elements from one file to the next. Note that this method does not include the Worksets the geometry is assigned to in the original file.
So in parting, the next time you are setting up Worksharing in Revit, and begin moving geometry around, if you feel the need to move the Project Base Point and Survey Point, you may want to move them to a Workset such as the Shared Levels and Grids that will not be deleted.
Ron Palma AEC Solutions Application Specialist
Ron has 23+ years of experience in the AEC industry as a designer, lead project designer, trainer and CAD manager. His instructional background includes Autodesk Certified Instructor, trainer, support technician, educator at Portland Community College and Clackamas Community College, and a U.S. Army certified instructor. Follow Ron @RonPalmaAEC.
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