There are many atlases. Personally, I feel that there are no complicated things and nodes in steel structure. Cross section. Cross section. You can always figure it out if you think about it carefully.

Speaking of atlas, we can start from the typical example of steel structure application of portal frame. Column foot, beam-column, beam-to-beam connection are all inside. A little more complicated, plus a crane. Basically, I understand this, and nothing else is wrong.

In addition, there is a parameter expression method of steel structure construction drawing, which can also be used for reference. Others are steel roof trusses and steel grid structures, all of which are extrapolated.