In the Electrical workspace, click Manage tabPreferences panelCable Tray . To specify a cable tray pattern, under Cable Tray Pattern, select a type of line pattern, and enter a value for Spacing. To assist you, the preview image on the right provides an example of the current selections. Under. Free CAD and BIM blocks library - content for AutoCAD, AutoCAD LT, Revit, Inventor, Fusion 360 and other 2D and 3D CAD applications by Autodesk. CAD blocks and files can be downloaded in the formats DWG, RFA, IPT, F3D. See. Discover Autodesk Revit's RVT format for our T&B cable tray BIM files. Access and download T&B cable trays Revit files for free now! Find and download Intergraph Smart 3D CAD VUE files for. Cable tray routing is specification driven. Cable tray specifications are handled the same way as piping specifications. Specification editor now checks that angle to which the functional description is intended for is implemented by. If you're working on electrical layouts or infrastructure planning, this cable tray section details DWG file is a must-have for your AutoCAD library. Utilize the catalog below to select, view, and download design content on available B-Line series products in nearly 100 different formats.