Features of Multi-story Steel Structure Factory Buildings Lightweight Enclosure Structure Color-coated profiled steel sheets and metal sandwich panels have replaced masonry enclosure walls of traditional multi-story factories and become indispensable enclosure materials for multi-story light steel workshops, thanks to their light self-weight, excellent thermal insulation, fast installation and attractive appearance. Lightweight enclosures can greatly reduce the overall structural weight and lower foundation requirements. Large Floor Height and Column Grid Dimensions Compared with multi-story civil buildings, multi-story steel factories adopt relatively large floor heights to satisfy production processes, delivering spacious interior space. High Live Loads Due to raw material storage and production process demands, the live loads of multi-story steel factory buildings are far higher than those of multi-story residential buildings. Numerous Suspended Loads and Concentrated Loads Suspended loads of multi-story factories mainly include installation loads, production lines, overhead cranes and ceiling loads. Concentrated loads mostly refer to the self-weight of production equipment, occasionally accompanied by equipment vibration loads. Staggered Floor Layouts Structures of multi-story civil buildings are mostly arranged symmetrically. However, staggered floors are commonly adopted in multi-story light steel factories to meet process requirements, resulting in discontinuous floor slabs and uneven mass distribution along the building height, which may trigger torsional responses under seismic actions. In addition, the short-column effect makes horizontal shear force the dominant control factor for certain column segments. Short Construction Period Compared with traditional reinforced concrete factories, multi-story steel structure factories realize integrated design, prefabrication and construction. With no on-site welding or wet construction work, the overall construction cycle is shortened and capital turnover is accelerated.