Large span steel building design is a specialized discipline at Guangdong Junyou Steel Structure Co., Ltd., focused on creating expansive, column-free spaces (spans ≥20 meters) using steel’s unique structural properties. This design is critical for applications like stadiums, convention centers, aircraft hangars, and industrial warehouses, where unobstructed space is essential. The design process begins with defining the span length (up to 100+ meters), load requirements (dead weight, live loads, wind, snow), and functional needs (e.g., crane capacity, ceiling height). Engineers then select the optimal steel structural system—trusses, arches, or rigid frames—based on these factors. High-grade steel (Q355B or higher) is specified for its tensile strength and ductility, ensuring the structure can span long distances without sagging or failing. Advanced software (e.g., STAAD.Pro, Tekla) is used to model and analyze the design, optimizing member sizes to balance strength and cost. The design also incorporates features like bracing (for lateral stability), roof slopes (for drainage), and connections (high-strength bolts or welding) to ensure rigidity. Large span steel building design prioritizes not just strength, but also practicality: integrating lighting, HVAC, and fire suppression systems without compromising the open space. The result is a visually impressive, functional structure that meets both engineering and aesthetic goals.