The construction scheme of the steel structure plant of Xi'an Chongqing Railway Group Co., Ltd., 1. the civil engineering and public works construction within the scope of the plant construction drawing (including the civil engineering of equipment foundation, water, heating, electricity, power, integrated wiring embedded parts, etc.); 2. Prestressed large reinforced concrete roof slab; 3. Steel structure, enclosure system (roof profiled steel plate, wallboard and purlin, etc.), external doors, windows and roof pressure of the plant