A Steel Space Frame is a three-dimensional structural system made from interconnected steel members arranged in a geometric pattern—usually triangles—for maximum strength and stability. Because of its light weight, ability to span large distances, and modern appearance, it’s widely used in large-span roofs and architectural structures.
Structure & Principle
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Composition: A network of steel tubes or sections connected at joints (nodes) to form rigid, stable triangles.
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Load Transfer: Distributes loads in multiple directions, reducing bending moments and increasing stiffness.
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Materials: Typically high-strength steel tubes (circular, square, or rectangular sections).
Key Features
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Large Span Capability – Can cover 30m to 100m or more without internal columns.
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Lightweight but Strong – High strength-to-weight ratio.
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Modular Construction – Prefabricated components for fast assembly.
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Architectural Freedom – Can create flat, curved, or freeform shapes.
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Durability – Long lifespan with corrosion protection (e.g., galvanizing or painting).
Common Types
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Flat Space Frame – Used for flat or slightly inclined roofs.
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Curved Space Frame – For domes, vaults, or spherical shapes.
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Barrel Vault – Semi-cylindrical space frame for stadiums or hangars.
Applications
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Stadium roofs & sports halls
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Exhibition centers
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Airport terminals
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Industrial buildings & warehouses
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Canopies, skylights, and atriums
Advantages
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Spans huge distances without supports
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Uniform load distribution reduces stress on individual members
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High rigidity and resistance to dynamic loads (wind, seismic)
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Flexible design possibilities
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Fast erection and dismantling
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