Steel moment frame at roof ridge

[Ben29]

Please see attached sketch. I want to make the tube steel moment connected at all joints. Is this even possible given the steel size and configuration? Should I just say "provide full moment connection at flange and web" and let the steel detailer figure it out? I don't want to show a connection that isn't possible. Thanks for your help.

 

[hokie66]

You can't just weld them together and call that a moment connection. Think of how the force in the flanges get through the joint. The usual method is to weld both members to a plate. If it has to be a full moment connection, you probably need backing bars. Leaving it to a detailer may work, but probably not.

 

[jvvse]

Some engineers just call that a miter joint, but I would be more specific. Full CJP welds all around. Since the 12x6 is slanted, they can line up all 4 sides with the 6x6 tube.