Bringing a SketchUp design into Revit is often the first step for architects and designers moving from conceptual massing to detailed documentation. While the two platforms share a common focus on building information, their underlying data structures are fundamentally different. This process requires a strategic approach to preserve geometry, manage materials, and maintain a coherent workflow. Success depends on understanding how to prepare your SketchUp files and leveraging the specific import capabilities within Revit.
Preparing Your SketchUp Model for Import
The quality of the import starts long before you open Revit. SketchUp files often contain unnecessary details, such as hidden geometry, excess layers, and overlapping faces, that can cause issues in a more structured environment. Cleaning up the model ensures that Revit interprets the geometry accurately and maintains a manageable file size. Taking the time to organize your scene in SketchUp will save significant time downstream.
Begin by purging unused components and materials. Navigate to the "Window" menu, select "Model Info," and then click on "Statistics." From there, you can purge unused entities. Next, ensure that your geometry is solid and well-formed; avoid naked edges and intersecting faces that can confuse the import process. It is also good practice to organize geometry into meaningful layers, as these can be translated into Revit categories during the import setup.
Exporting from SketchUp
Once the model is clean, you must export it from SketchUp. The preferred format for bringing geometry into Revit is the DWG file, as it maintains the layer and color information better than other formats. SketchUp Pro users can export directly to DWG, while Free users can export to STL and then use a conversion tool if necessary. When exporting, choose the appropriate version of the DWG format that matches your Revit installation to ensure compatibility.
Importing Strategies in Revit
With a prepared DWG file, you can now move into the Revit environment. Revit provides several import options, and choosing the right one dictates how the data is structured. You can import the sketch as a generic linked object, or you can bring the geometry into specific categories like walls, floors, or masses. Understanding these options is key to maintaining a logical model structure.
To import, navigate to the "Insert" tab on the Ribbon and select "Import CAD." In the import dialog, select your DWG file. The critical step occurs in the "Import CAD Formats" dialog box. Here, you can specify how layers from SketchUp will be mapped to Revit categories. You have the option to manually assign layers to specific object styles or to let Revit place them into generic model categories. Careful mapping at this stage ensures that walls, doors, and furniture appear in the correct view templates.
Working with Imported Geometry
After the import is complete, the geometry will reside in the model space. You will likely need to adjust the positioning if the origin of the SketchUp model does not align with the Revit project. Utilize the "Move" tool to coordinate the geometry with the Revit grid. At this stage, it is essential to verify that the scale is correct; SketchUp and Revit handle units differently, so double-check the import unit settings to avoid dimensional inaccuracies.
Once placed, you can begin the process of replacing generic geometry with Revit-specific components. For example, you can trace over imported floors to create actual floor slabs, or use the wall tool to generate real wall elements with proper parameters. While this requires additional effort, it transforms a simple visual reference into a functional, data-rich model that supports annotation, scheduling, and analysis.
