Sometimes you might want to export only your Levels and Grids from your Revit model to build the model an another program.
To be able to export a level there needs to be at least one object on the story level. Just add a beam onto each level that you want to export. As long as story levels are exported the grids will export also.
If you only want to export the grids, preselect only the grids in the Revit model. The when you create the repository select the "Use Revit Current Selection" option in the Create Repository dialog.
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