FAQ: How to model Cross Frames with a back-to-back channel section?
First, on the Utilities ribbon tab, select the Cross Frames tool in the Libraries group, as shown in the screenshot below and in the Help/F1 link:
To create a cross frame template…
I am trying to define cross frame templates for a bridge. When I open the cross frame template tool, the steel members do not display. The cross frame members also do not display when inserting cross frames into the model.