What are the main steel structures in the steel structure and which are the secondary steel structures?
Frames, beams, columns and supports constitute the main structure of the structure, and generally include stairs, platforms and so on
The secondary structure, or should be said that the subsidiary component, refers to the envelope of the purlin, door and window frame, generally attached with the main structure, the stress is simple and clear, the damage also has little effect
You've split the question for me! Why don't you know?!! The main structure is the component that carries the main load. The same as the frame structure construction, (beam, column and slab is the main component), steel structure without transfer plate force, then only the beam column is the main component, such as roof frame, purlin, beam, sub beam, column. Then the members without any force are secondary members, such as steel drains, windproof rails, and ladders.