Light gauge steel (LGS) trusses can span significant distances, typically ranging from 15 to 40 feet (approximately 4.5 to 12 meters), depending on the specific design, loading conditions, and the type of truss used. In some cases, with proper engineering and design considerations, LGS trusses can span even longer distances, up to 60 feet (about 18 meters) or more.
The span capability of an LGS truss depends on several factors, including:
- Truss Design: The type of truss (e.g., king post, queen post, or attic truss) and its design configuration play a crucial role in determining the span length.
- Load Requirements: The truss must be designed to support the specific loads it will bear, including dead loads (such as the weight of roofing materials) and live loads (such as snow, wind, or occupancy loads). Higher loads may require shorter spans or additional support.
- Material Specifications: The gauge (thickness) and strength of the steel used in the truss affect its spanning capabilities. Heavier gauges can support longer spans.
- Supporting Structure: The truss span is also influenced by the type of supporting structure, such as walls, beams, or columns, and the spacing between them.
- Local Building Codes: Building codes and regulations may impose limits on truss spans based on safety standards, load requirements, and environmental conditions.
In summary, LGS trusses offer great flexibility and can span considerable distances, with the specific span determined by design, load, and material considerations.