To use elbows in Revit cable trays, you need to load the appropriate cable tray fitting families and configure your project settings for automatic routing.

Step 1: Prepare Your Project

Start with the correct MEP template to ensure cable tray content is available, as architectural templates may lack fittings and families ( ). Navigate to MEP Settings and configure Cable Tray Settings, including default angles, bend radius, and system types. This ensures that elbows and other fittings behave correctly when placed ( ).

Step 2: Load Cable Tray Fittings

1. Go to the Systems tab in Revit.
2. Select Cable Tray and then Cable Tray Fitting.
3. If no fittings are loaded, click Load Family or Upload.
4. Navigate to the Cable Tray Fittings folder and select the required types, such as 45° and 90° elbows ( ).
5. Confirm the families are loaded into the project; they will now appear in the type selector when placing fittings.

Step 3: Place Cable Tray Runs

Draw your straight cable tray runs in the floor plan or ceiling plan view. Revit will automatically generate elbows when the tray changes direction, provided the correct fitting families are loaded ( ). You can adjust the elevation, width, and system type in the properties palette to match your design requirements.

Step 4: Customize Elbows (Optional)

For more precise modeling:

• A 45° elbow typically requires two segments, while a 90° elbow uses three segments ( ).
• You can create custom elbow families if the default ones do not match your project needs, using Revit's family editor.

Step 5: Verify and Adjust

After placing trays and elbows:

• Check connectivity and routing.
• Adjust bend radius or elevation if necessary.
• Ensure that elbows align with other MEP systems to avoid clashes. By following these steps, you can efficiently load and use elbows in Revit cable trays, enabling automated routing and accurate electrical modeling ( ).