To change the project base in Revit, you essentially relocate the Project Base Point within your model.
The "project base" in Revit is primarily defined by the Project Base Point, which serves as the origin for project coordinates. After you have initially defined its coordinates, you can adjust its position if needed.
Here’s how to move the Project Base Point and, by extension, change your project base:
- Open a Suitable View: Navigate to a view that displays the Project Base Point. The most common and recommended view for this action is the site plan view. Other views that display the Project Base Point can also be used.
- Select the Project Base Point: In your chosen view, carefully select the Project Base Point. It often appears as a circular icon with crosshairs, sometimes with a triangle or other symbol indicating its visibility state (clipped/unclipped).
- Drag to New Location: With the Project Base Point selected, simply drag it to your desired new location within the drawing area.
Important Considerations:
- Impact on Coordinates: Moving the Project Base Point affects the project coordinates of all elements relative to this point. Ensure you understand the implications for existing elements and any linked files that reference these coordinates.
- Visibility: If you cannot see the Project Base Point, ensure its visibility is enabled in the Graphics Overrides for the view (under Visibility/Graphics Overrides > Site).
- Clipping State: The Project Base Point has a "clipped" and "unclipped" state. When clipped (a paperclip icon is closed), moving it will also move the entire model relative to the survey point. When unclipped (paperclip icon is open), moving it will only change the project's internal origin relative to the model, without moving the model itself. The reference specifically describes moving the point, which is generally done in the unclipped state to adjust the internal origin.
