Steel Pipe Truss

Steel Pipe Truss

A steel pipe truss is a structural framework made from steel pipes (circular hollow sections, CHS) arranged in interconnected triangles to efficiently carry and distribute loads.

• Unlike I-beam or angle trusses, pipe trusses are torsion-resistant due to their closed cross-section.

• The smooth round shape gives both strength and architectural elegance.

Structural Components

1. Top Chord

   • The uppermost member, typically under compression.

   • Can be straight or curved depending on the roof shape.

2. Bottom Chord

   • The lowest member, usually under tension.

3. Web Members

   • Diagonal members: transfer loads between top and bottom chords.

   • Vertical members: provide stability and help with load distribution.

4. Nodes / Joints

   • Where members meet. Can be welded, bolted, or cast-steel ball nodes in 3D space trusses.

Advantages

• High strength-to-weight ratio — supports large loads with relatively light material.

• Efficient load distribution — triangular geometry reduces bending moments.

• Aesthetic appeal — clean, modern look with slim, curved, or tapered members.

• Versatility — adaptable to straight, curved, or spatial designs.

Applications

• Airport hangars & terminals

• Sports arenas & stadium roofs

• Exhibition halls

• Industrial workshops

• Long-span pedestrian & vehicular bridges

• Outdoor canopies & awnings

Design Considerations

• Pipe diameter & wall thickness depend on span, loads, and local building codes.

• Material grade often uses ASTM A500, Q235, Q345, or equivalent.

• Welding quality is critical to avoid stress concentration.

• Deflection control is important for long spans.

• Surface treatment — hot-dip galvanizing or epoxy painting for corrosion protection.

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