There is no way to auto-generate the fittings. You can however use the fitting APIs to create cable tray fittings yourself. For example, NewElbowFitting, NewTeeFitting, NewTransitionFitting, NewCrossFitting, should all produce valid cable tray fittings when connected. Here is the simple solution Create two type : 90 elblow and 45 elbow In the real world, to make a 45 elbow, we need two segments, to make a 90 elbow, we need three segments I've also tried to use some geometry forms in revit but no hope. 11-09-2024 01:19 AM Thank you, anyway I will mark your. In order to automatically create a whole cable tray run, however, we need both the straight segment cable tray elements and also the fittings to connect them with each other, elbows to turn corners and branching elements to represent junctions. Emphasizes the importance of loading the correct fitting families early. Don't start designing cable tray until your template, settings, and content are. I have automatic fittings turned on and fittings loaded (outside vertical, inside veritcal, horizontal) and whenever I try modle a tray run w/ automatic fitting I get: The routing solution failed because there is no default fitting type specified or the fitting cannot be found in the project. I have attached a few pictures with examples.