Truss profiles and load charts
Five aluminium box truss profiles, with specifications taken from our engineering drawings. Every cross-section on this page is drawn to scale.
Compare
All profiles at a glance
| Profile | Section | Chord centres | Main chords | Lengths | Connectors | Main use |
|---|---|---|---|---|---|---|
| 400 × 400 | 400 × 400 mm | 350 × 350 mm | 4 × Ø50 × 3 mm | 1 m, 2 m, 3 m | 50-series | Pillars, goal posts and medium spans |
| 600 × 525 | 600 × 525 mm | 550 × 475 mm | 4 × Ø50 × 3 mm | 1 m, 2 m, 3 m | 50-series | Roof beams for box truss systems |
| 500 × 500 | 510 × 510 mm | 450 × 450 mm | 4 × Ø60 × 4 mm | 3 m | 60-series | Heavy pillars |
| 800 × 550 | 800 × 550 mm | 740 × 490 mm | 4 × Ø60 × 4 mm | 2 m, 3 m | 60-series | Main beams and lantern for large roofs |
| 1100 × 650 | 1100 × 650 mm | – | On request | 2 m | 60-series | Heavy-duty beams for very long spans |
All profiles: Aluminium alloy 6082-T6 tube, welded in-house to ISO 3834-2.
Pillars, goal posts and medium spans
400 × 400 box truss
Our most used profile. A square box section with four Ø50 mm chords, used as the pillar in box truss roof systems, for goal posts and arches, and in the 20 ft circle truss.
- Section
- 400 × 400 mm
- Chord centres
- 350 × 350 mm
- Main chords
- 4 × Ø50 × 3 mm
- Bracing
- Ø40 × 3 mm diagonals at 45°, Ø25 × 3 mm secondary members
- Standard lengths
- 1 m, 2 m, 3 m
- Connectors
- 50-series: pipe connector (spigot), bullet pins, R-pins
- Material
- Aluminium alloy 6082-T6 tube
- Welding
- ISO 3834-2 certified, ISO 9606-2 qualified welders
Typical uses
- Pillars for box truss roof systems
- Goal posts and arches
- Lighting and speaker towers
- Circle truss (20 ft)
Load chart
Safe loads depend on the span, how the truss is supported and how the load is hung. Ask for the load chart for the 400 × 400 profile and send us your layout.
Roof beams for box truss systems
600 × 525 box truss
A deeper rectangular section for the roof beams of box truss systems. It runs on 400 × 400 pillars through sleeve blocks sized to its 550 × 475 mm chord centres.
- Section
- 600 × 525 mm
- Chord centres
- 550 × 475 mm
- Main chords
- 4 × Ø50 × 3 mm
- Bracing
- Ø40 × 3 mm and Ø30 × 3 mm
- Standard lengths
- 1 m, 2 m, 3 m
- Connectors
- 50-series: pipe connector (spigot), bullet pins, R-pins
- Material
- Aluminium alloy 6082-T6 tube
- Welding
- ISO 3834-2 certified, ISO 9606-2 qualified welders
Typical uses
- Roof beams on 400 × 400 pillars
- Stage roofs up to 60 × 60 ft
- Front-of-house spans
- LED screen headers
Load chart
Safe loads depend on the span, how the truss is supported and how the load is hung. Ask for the load chart for the 600 × 525 profile and send us your layout.
Heavy pillars
500 × 500 tower truss
A heavier tower section with Ø60 × 4 mm chords (510 mm over tube). It carries 800 × 550 beams in our heavy roof systems.
- Section
- 510 × 510 mm (over tube)
- Chord centres
- 450 × 450 mm
- Main chords
- 4 × Ø60 × 4 mm
- Bracing
- Ø40 × 3 mm and Ø30 × 3 mm, diagonals at 50°
- Standard lengths
- 3 m
- Connectors
- 60-series: pipe connector 60, spigot 60, bullet pin 60
- Material
- Aluminium alloy 6082-T6 tube
- Welding
- ISO 3834-2 certified, ISO 9606-2 qualified welders
Typical uses
- Pillars for heavy roof systems
- Towers for 800 × 550 beams
- Tall ground support towers
Load chart
Safe loads depend on the span, how the truss is supported and how the load is hung. Ask for the load chart for the 500 × 500 profile and send us your layout.
Main beams and lantern for large roofs
800 × 550 heavy truss
Our heavy beam profile, with four Ø60 × 4 mm main tubes. Used for the main beams and the raised lantern section of large roof systems on 500 × 500 pillars.
- Section
- 800 × 550 mm
- Chord centres
- 740 × 490 mm
- Main chords
- 4 × Ø60 × 4 mm
- Bracing
- Ø50 × 3 mm and Ø30 × 3 mm, diagonals at 57° and 67°
- Standard lengths
- 2 m, 3 m
- Connectors
- 60-series: pipe connector 60, spigot 60, bullet pin 60
- Material
- Aluminium alloy 6082-T6 tube
- Welding
- ISO 3834-2 certified, ISO 9606-2 qualified welders
Typical uses
- Main beams for large roofs
- Lantern (raised ridge) sections
- Long clear spans
Load chart
Safe loads depend on the span, how the truss is supported and how the load is hung. Ask for the load chart for the 800 × 550 profile and send us your layout.
Heavy-duty beams for very long spans
1100 × 650 heavy-duty truss
Our largest section, built around our 60-series connectors (pipe connector 60, spigot 60 and bullet pin 60) for main beams over very long spans.
- Section
- 1100 × 650 mm
- Main chords
- On request
- Bracing
- Diagonals at 65° and 75°
- Standard lengths
- 2 m
- Connectors
- 60-series: pipe connector 60, spigot 60, bullet pin 60
- Material
- Aluminium alloy 6082-T6 tube
- Welding
- ISO 3834-2 certified, ISO 9606-2 qualified welders
Typical uses
- Main beams for large roofs and venues
- Very long clear spans
- Large stage and screen structures
Load chart
Safe loads depend on the span, how the truss is supported and how the load is hung. Ask for the load chart for the 1100 × 650 profile and send us your layout.
Special structure
Circle truss, 20 ft
A full ring in 400 × 400 box truss, built from eight rolled segments joined with spigots. Used for centre-stage lighting rings and hanging displays.
- Centreline diameter
- 6096 mm (20 ft)
- Outside diameter
- 6496 mm
- Inside diameter
- 5696 mm
- Segments
- 8 at 45°
- Section
- 400 × 400 mm, chords at 350 mm centres
- Chords / bracing
- Ø50 × 3 mm / Ø40 × 3 mm
- Joints
- 8 joints, 4 spigots each
Load chart
The circle truss is not yet load-rated. Capacity for your rigging must be confirmed by a qualified engineer before use.
Need a load chart or a quote?
Send us your span, pillar height and what you will hang, and we will come back to you.