Elbow-shaped cable tray converted into a T-junction

To convert an elbow-shaped cable tray into a T-junction, you can use a T-piece fitting designed for seamless integration with existing trays, ensuring proper alignment and bend radius.

Physical Installation

A T-piece fitting allows a branch to extend from the main cable tray without cutting or compromising the existing elbow. Modern T-junctions, such as those from Atkore Vergokan, are designed with a 100 mm radius for smooth cable routing and can slide into the elbow, making cut-off ends reusable and maintaining structural integrity . Ensure that the bend radius of the cables is respected to prevent damage, typically following manufacturer guidelines for minimum bend radius .

Design and CAD Considerations

When modeling in Revit or other CAD software, converting an elbow to a T-junction involves:

• Starting from a T-fitting family: Modify the family to match the width, height, and orientation of the existing tray .
• Connector alignment: Set the angle parameters to 90 degrees for proper placement and avoid warnings during placement .
• Orientation adjustments: Rotate the family in plan view if necessary to align with the main tray and branch correctly .
• Dynamic sizing: Ensure the family is parametric so it can adapt to different tray widths and heights without breaking geometry . For complex bends, it may be necessary to recreate the fitting using sweeps along reference lines rather than simple extrusions, which helps maintain the correct angles and prevents geometry from breaking .

Best Practices

• Always check the minimum bend radius for the cables to avoid stress or damage .
• Use ventilated or solid-bottom trays depending on cable type and heat dissipation requirements .
• When designing digitally, test the T-junction in multiple orientations to ensure it aligns with the main tray and any branches.
• Consider modular fittings that allow reuse of cut-off ends to reduce waste and maintain efficiency . By following these steps, an elbow-shaped cable tray can be effectively converted into a T-junction, both in physical installations and digital models, ensuring smooth cable management and structural integrity.