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Setting Up Custom IFC Attributes in Revit

The guide takes you through the process of adding a custom IFC attribute to an object and exporting IFC file from Revit preserving the custom attribute (also known as property set). You will need to sign up to Tridify Service and start a free 14 day Tridify trial to begin uploading and processing your IFC files. Currently Tridify supports IFC 2×3 format. You can also use our sample IFC file to test the service (unzip the file before uploading to the service).

1. In this example we will add custom attribute to this table. Select the object and go to Edit Family.

2. Go to Create tab > Properties > Family Types

3. A Family Types window will appear.

4. In the bottom left corner select New Parameter. In Parameter Properties window select whether or not your new parameter can be shared (as in applicable to other families and projects) or if it will be a family parameter that only exists in this family. In this case I will create a Family Parameter.

* Note that you can also add a custom tooltip to describe what your custom parameter is about.

5. Once you are satisfied with your parameter, and selected what kind of parameter that is, click OK.

6. Input some values for your new custom parameter.

7. Click OK. Save the family and load it to the project

8. Export your project and convert it (more on how to export IFC here: Revit IFC export guide.
Be aware that in IFC export settings you need to set up custom parameters.

You will see your custom parameter after export:

More info on custom parameters is available from Autodesk.

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