The project is located in Jinzhong City, Shanxi Province, with a building height of 8.4m. The roof structure system is a steel structure beam string, the lower structural column is a concrete column, and the upper structural column is a steel column. The seismic fortification intensity is 8 degrees. Drawings include: general description of steel structure design, steel column layout plan, three-dimensional isometric drawing of beam string roof, structural layout plan, beam string roof structure layout plan,