How to Create a Pat File in Revit?

Understanding PAT Files in Revit

PAT files, essential for creating both model and drafting patterns in Revit, are text files with definitions saved under the .PAT extension. A well-structured PAT file allows you to customize fill patterns according to specific project requirements, enhancing both the aesthetics and functionality of your designs.

Locating Default PAT Files in Revit

If you’re starting with the default patterns that come with Revit, they are usually found in the installation directory. For Revit 2018, you can navigate to the following path:
C:\Program Files\Autodesk\Autodesk Revit 2018\Data.
Here, you can find several predefined PAT files that can serve as a reference for creating your own custom patterns.

Editing an Existing PAT File in Revit

1. Open Revit and go to the Manage tab in the Ribbon.
2. From the Settings panel, click on the Additional Settings drop-down and choose Fill Patterns.
3. In the Fill Patterns dialog, you will see a dropdown menu for Pattern Type. Select either Model or Drafting.
4. Choose the pattern you wish to modify and click the "Edit" button to enter the editing mode.
5. Follow the instructions provided in the dialog to customize the selected pattern to your liking.

Creating a New PAT File from Scratch

1. Start with a new blank document in a text editor like Notepad.
2. Define the pattern using the following structure:

   *PatternName, 0, 0
   0, 1, 0, 1, 0, 2, 1.5, 1, 1, 0

   Each line sets attributes for the pattern, such as the name and the geometry.

3. Once your pattern is fully defined, save the file using the .PAT extension (e.g., MyPattern.pat).
4. Load your new PAT file in Revit through the Fill Patterns dialog as described in the previous section.

Changing a Text File to a PAT File

To convert a text file into a PAT file, follow these steps:

1. Open Finder (or Windows Explorer) and navigate to the folder containing your text file.
2. Ensure file extensions are visible by going to Folder Options and unchecking "Hide extensions for known file types."
3. Rename the file to change its extension from .txt to .pat.
4. Confirm any prompts about changing file types.

Importing AutoCAD PAT Files into Revit

If you have existing PAT files from AutoCAD, you can import them into Revit:

1. Open Revit and navigate to the Manage tab on the Ribbon.
2. Click on Settings, then Additional Settings, and select Fill Patterns.
3. In the Fill Patterns dialog, you will find an option to import new patterns. Click the New button.
4. Locate your AutoCAD PAT file and load it into Revit.

Frequently Asked Questions

What are the benefits of using custom PAT files in Revit?
Custom PAT files allow for unique fill patterns that can enhance the visual representation of materials and components in your design, providing clarity and a personalized touch to your projects.

Can PAT files be edited after they are created?
Yes, PAT files can be edited using any text editor. However, it is important to ensure that any changes adhere to the correct syntax to prevent errors when the file is loaded in Revit.

Is it possible to share PAT files with other users?
Absolutely. PAT files can be shared just like any other file type. Ensure that the recipient knows how to load PAT files into their version of Revit for seamless integration into their projects.