Prefabricated Aircraft Hangars Hangar Steel Structure For Maintenance is a large-span single-story building that parks and repairs aircraft. The layout and height requirements of the hangar are special, which directly affects the structural form of the hangar. Due to the large span of the hangar, the structural weight (mainly the roof system) accounts for a large proportion of the total load. If the weight of the structure can be reduced, a significant economic effect can be obtained. The steel structure has the advantages of high strength, light weight, small cross-section of the component, weldability, and relatively simple manufacturing process. Therefore, it is common to use a steel structure as a load-bearing system for the roof in a large-span structure.