Seismic design, plant structure system, should meet the following requirements:
1. The plant horizontal should adopt rigid frame or truss and column have a certain consolidation frame,
2. Plant structure and components should ensure the overall stability and local stability,
3. The welded joints shall be avoided in the maximum stress zone where the member may produce a plastic hinge.
4. The damage of the node should be later than the full cross-section of the component, including the supporting node, the column pin, the roof truss and the connecting point.
5. The supporting rod should be used as the whole material.