To bring an AutoCAD file's geometric data into your Revit project – essentially "opening" it within the Revit environment – you will use the Import CAD function. This embeds the CAD data directly into your active Revit view or project.
Step-by-Step Guide to Importing Your AutoCAD File
Follow these steps to import your AutoCAD DWG or other CAD file into Revit:
- Access the Import Function: Start by navigating to the Insert tab located in the Revit ribbon interface.
- Find the Import Panel: Within the Insert tab, look for the panel specifically labeled Import.
- Initiate the Import: Click the Import CAD button within the Import panel. This action will open the Import CAD Formats dialog box, which is where you select your file and define import options.
- Select File Type: Inside the Import CAD Formats dialog, locate the Files of type dropdown menu. Click on it and choose the appropriate file type for your AutoCAD file, such as "DWG Files (*.dwg)".
- Navigate and Select: Use the dialog's navigation tools to browse the folders on your computer. Find the specific AutoCAD file you intend to import and select it with a click.
- Consider Import Settings (Important Tip): As highlighted in the provided reference, it is crucial to configure settings to "make sure you import the geometric data needed for the Revit capability that you plan to use." The Import CAD Formats dialog box provides options for controlling layers, colors, units, positioning, and more. Carefully review these settings to import only the necessary geometry, which helps manage file size and performance.
- Complete the Import: Once you have selected your file and configured the settings, click the Open button in the dialog box. The AutoCAD data will then be imported into your current Revit view or project according to your specifications.
Understanding What Happens When You Import CAD into Revit
Importing a CAD file creates a static copy of the CAD data within your Revit project.
- The imported CAD data becomes part of your Revit project file (
.rvt). - There is no dynamic link maintained between the imported data and the original CAD file (
.dwg). If the original DWG is updated, the imported data in Revit will not change automatically. - Imported CAD data is typically used as an underlay for tracing or referencing non-changing information like site boundaries or standard details.
Why Pay Attention to Import Settings?
The tip about importing only the necessary data is vital for optimal Revit project management:
- Project Performance: Importing excessive or unnecessary CAD data, especially from large files, can significantly increase your Revit file size and slow down performance.
- Model Clarity: Limiting the imported data to only what you need reduces visual clutter in your Revit views, making it easier to model and document.
- Control Over Geometry: Utilizing options to control layers, line styles, and colors helps ensure the imported CAD data integrates well with your Revit project's graphic standards.
Importing is just one method; Revit also offers linking CAD files, which maintains a connection allowing for updates from the original file, though the provided reference focuses specifically on the import process.
