3-Point Trusses

3-Point Trusses – Versatile Aluminium Framework for Professional Event Technology

3-point trusses are the versatile backbone of modern event technology, combining lightweight aluminium construction with impressive load capacity. These triangular truss systems are the optimal solution for stage construction, exhibition stands, lighting rigs and countless other professional applications. Whether you're planning a trade show booth, a concert stage or a DJ setup, 3-point trusses deliver the structural stability and flexibility you need to bring your vision to life and achieve impressive results.

What Are 3-Point Trusses? Technical Fundamentals and Design

A 3-point truss is a modular aluminium framework system characterised by three main tubes (chord tubes) arranged in an equilateral triangle. This triangular geometry distributes loads evenly across all three connection points, creating exceptional structural stability while maintaining a compact, visually unobtrusive profile.

The triangular cross-section is reinforced by diagonal braces and struts welded between the chord tubes, forming a rigid lattice structure that resists bending and torsion. This design principle allows 3-point trusses to support significant loads – including lighting equipment, sound systems, banners and monitors – without excessive weight or bulk.

Connection Methods and Assembly

Professional 3-point trusses use cone connectors (conical spigots) for assembly. Each truss segment features three connection points – one per chord tube – where cone connectors are inserted and secured with bolts and split pins. This quick-lock system enables rapid, tool-assisted assembly on-site while maintaining certified load ratings.

Compared to 4-point trusses, which feature a square cross-section with four chord tubes, 3-point systems offer a more streamlined appearance and lower weight. However, 4-point trusses typically provide higher load capacities for heavy-duty applications. For most stage, exhibition and event scenarios, 3-point trusses strike the perfect balance between strength, weight and visual elegance.

2-point trusses, with only two chord tubes arranged in a ladder configuration, are lighter still but offer significantly reduced load capacity and are generally limited to decorative applications or very light loads. 3-point trusses represent the professional standard for versatile event rigging.

Applications: Where 3-Point Trusses Shine

3-point trusses are the go-to choice for a wide range of professional applications in the event and exhibition industry. Their combination of manageable weight, robust construction and flexible configuration makes them ideal for:

Exhibition Stands and Trade Shows: Create eye-catching booth structures, banner displays and product presentation frameworks. The clean, modern aesthetic of aluminium trusses complements corporate branding while providing secure mounting points for graphics, monitors and lighting.

Stage Construction and Concert Rigging: Build lighting rigs, speaker arrays and overhead structures for live performances. 3-point trusses support moving heads, LED panels, follow spots and PA systems, enabling technicians to position equipment precisely for optimal coverage and dramatic effect.

DJ Setups and Mobile Events: Construct portable lighting towers, backdrop frames and equipment stands that pack down efficiently for transport. The modular nature of truss systems allows DJs and mobile entertainers to adapt their setup to different venue sizes and configurations.

Theatre and Fixed Installations: Install permanent or semi-permanent rigging grids for theatrical lighting, curtain tracks and scenic elements. Churches, community halls and corporate event spaces benefit from the professional appearance and certified safety of truss-based installations.

Outdoor Festivals and Temporary Structures: Assemble ground-supported towers, truss arches and decorative frameworks for outdoor events. When combined with appropriate ground support systems and ballast, 3-point trusses create stable structures that withstand wind loads and weather conditions.

The versatility of 3-point trusses extends to architectural installations, retail displays and even bespoke truss furniture for themed events. Wherever you need to elevate equipment, display materials or create visual impact, 3-point trusses deliver the structural foundation you can rely on.

Quality Standards and Professional Specifications: What to Look For

When selecting 3-point trusses for professional use, technical specifications and safety certifications are paramount. Understanding these criteria ensures you choose systems that meet regulatory requirements and deliver reliable performance.

Tube Diameter and Wall Thickness

The load capacity of a 3-point truss is directly related to the diameter and wall thickness of its chord tubes. Common professional specifications include:

• Lightweight series (e.g. Naxpro FD21-24): 35 mm diameter tubes with 2 mm wall thickness, suitable for decorative applications, banner frames and light equipment loads.
• Standard series (e.g. Naxpro FD31-44): 50 mm diameter tubes with 2 mm wall thickness, the industry workhorse for general event technology, lighting rigs and exhibition stands.
• Heavy-duty series (e.g. Naxpro HD31-44): 50 mm diameter tubes with 3 mm wall thickness, engineered for higher loads, longer spans and demanding rigging applications.

These specifications translate into measurable Working Load Limits (WLL) – the maximum safe load a truss can support under defined conditions. Always consult manufacturer load tables and respect rated capacities.

Safety Certifications and Compliance

Professional 3-point trusses must comply with stringent safety regulations:

• DGUV Regulation 17 (formerly BGV C1): The German statutory accident insurance regulation governing scenic equipment and stage technology. Compliance ensures trusses meet requirements for design, testing and documentation in professional event environments.
• EN 1090: European standard for the execution of steel and aluminium structures, covering manufacturing quality, welding procedures and material traceability.
• TÜV SÜD certification: Independent testing and certification by TÜV SÜD confirms that truss systems meet declared load ratings and safety standards.

Reputable manufacturers provide comprehensive technical documentation, including load tables, material certificates and assembly instructions. This documentation is essential for regulatory inspections and liability protection.

Leading Manufacturers

The professional truss market features several established brands known for precision engineering and consistent quality:

Naxpro-Truss offers comprehensive product lines spanning lightweight to heavy-duty systems, all manufactured in Germany with rigorous quality control. The brand combines competitive pricing with professional-grade specifications and extensive accessory ranges.

Global Truss is recognised worldwide for high-quality aluminium fabrication, precise tolerances and long-term durability. Their systems are widely specified for permanent installations and touring productions.

Prolyte represents the premium segment, with advanced engineering, exceptional finish quality and comprehensive load documentation. Prolyte trusses are the choice for high-profile events and safety-critical applications.

Litec and Milos round out the professional landscape, each offering distinctive design features and compatibility with extensive accessory ecosystems.

When investing in 3-point trusses, prioritise manufacturers who provide transparent technical data, certified load ratings and comprehensive warranty support. Quality truss systems deliver decades of reliable service when properly maintained.

Corner Pieces, Angles and Modular Configuration

The true versatility of 3-point truss systems emerges when you combine straight sections with specialised corner pieces and junction modules. These components enable you to create complex three-dimensional structures, from simple rectangular frames to elaborate architectural forms.

Standard Corner Angles

90° corners are the foundation of rectangular and square structures. Two-way 90° corners connect two straight sections at right angles, perfect for building booth perimeters, stage edges and lighting grids. These corners maintain the triangular cross-section through the bend, ensuring consistent load capacity.

135° corners enable angled constructions, ideal for creating dynamic stage designs, sloped lighting rigs and non-orthogonal exhibition layouts. The obtuse angle adds visual interest while maintaining structural integrity.

Multi-Way Junctions

Beyond simple corners, professional truss systems include multi-way junction pieces:

• 3-way corners (T-pieces): Connect three truss sections, with configurations available for horizontal T-junctions and vertical T-junctions. These enable you to build cantilevered structures, lighting booms and complex grid patterns.
• 4-way corners (cross-pieces): Join four truss sections in a single junction point, essential for creating central hubs in truss grids and symmetrical structures.
• 5-way and 6-way corners: Specialised junctions for complex architectural forms, geodesic structures and bespoke designs.

Each multi-way corner is engineered with the same chord tube diameter and wall thickness as the straight sections it connects, ensuring uniform load distribution and structural continuity.

Vertical and Horizontal Orientation

Many corner pieces are available in both vertical and horizontal orientations. Vertical T-pieces allow you to build upward-extending towers and vertical trusses, while horizontal T-pieces create lateral extensions and cantilevered arms. Understanding the orientation options expands your design possibilities significantly.

Compatibility and System Integration

Corner pieces and straight sections are typically designed as complete product families, with cone connectors, bolt patterns and dimensions standardised within each manufacturer's range. Mixing components from different manufacturers or product lines can compromise structural integrity and void certifications. Always specify complete systems from a single product family to ensure compatibility and maintain certified load ratings.

With the right combination of straight sections, corners and junctions, 3-point trusses transform from simple linear elements into sophisticated three-dimensional frameworks that bring your creative vision to life.

Rigging Hardware and Essential Accessories

A complete 3-point truss installation requires more than just the truss sections themselves. Professional rigging hardware and accessories ensure safe assembly, secure load attachment and compliance with safety regulations.

Cone Connectors and Fasteners

Cone connectors (conical spigots) are the primary joining method for professional truss systems. These precision-machined aluminium or steel components insert into the chord tubes, creating a secure mechanical connection. Each connection is locked with a bolt and split pin (cotter pin), preventing accidental disconnection during transport or use.

Quality cone connectors feature:

• Precise taper angles for tight, wobble-free joints
• Corrosion-resistant finishes for long-term reliability
• Clearly marked orientation indicators for correct assembly
• Compatibility with standard bolt sizes (typically M10 or M12)

Always inspect cone connectors for wear, deformation or corrosion before each use. Damaged connectors must be replaced immediately to maintain structural integrity.

Ground Support and Base Plates

When building free-standing structures, ground support systems provide the stable foundation. Aluminium base plates bolt to the bottom of vertical truss sections, distributing loads across a wider footprint. For outdoor applications or higher structures, ballast weights or ground anchors may be required to resist wind loads and prevent tipping.

Professional ground support systems include:

• Adjustable outriggers for levelling on uneven surfaces
• Integrated ballast attachment points
• Compatibility with standard truss foot sections
• Load capacity ratings matched to the truss system

Clamps, Shackles and Rigging Points

Attaching equipment to trusses requires certified rigging hardware:

Truss clamps (also called half-couplers or hook clamps) attach to the chord tubes, providing secure mounting points for lighting fixtures, speakers and other equipment. Choose clamps rated for the load you're suspending and ensure they're compatible with your truss tube diameter.

Shackles (bow shackles and dee shackles) create certified connection points for lifting slings, chain hoists and safety cables. Always use shackles with Working Load Limits that exceed your suspended loads, and never exceed the rated capacity.

Safety cables (also called safety bonds or secondary attachments) provide redundant load paths. Regulations typically require that every suspended item is secured with both a primary attachment (clamp) and a secondary safety cable. This ensures that if the primary attachment fails, the safety cable prevents the item from falling.

Spansets, Slings and Lifting Equipment

When suspending trusses from overhead rigging points, certified lifting equipment is essential:

• Spansets (round slings) distribute loads evenly and protect truss surfaces from damage
• Chain hoists (manual or electric) enable precise height adjustment and load positioning
• Shackles and master links create secure connections between lifting equipment and truss pick points

All lifting equipment must display current inspection tags and comply with relevant regulations. Regular inspection and documentation are mandatory for professional use.

Investing in quality rigging hardware and accessories is not optional – it's the foundation of safe, compliant event technology installations. Never compromise on rigging components, and always follow manufacturer guidelines and regulatory requirements.

LTT – Your Specialist for Event Technology

When you choose LTT for your 3-point truss systems, you're partnering with a specialist who understands the demands of professional event technology. With over 25 years of experience in the industry, LTT combines manufacturing expertise with comprehensive product knowledge to deliver innovative solutions for professionals.

As both a retailer and manufacturer with our own production facilities in Germany, we offer the complete Naxpro-Truss range – from lightweight decorative systems to heavy-duty rigging trusses. Every product meets stringent quality standards, with TÜV certification and DGUV Regulation 17 compliance as standard. Our 3-year LTT warranty provides additional peace of mind for your investment.

We ship worldwide from our facility in Bocholt, Germany, with free shipping on orders over €69 within Germany and express delivery options available for time-critical projects. Whether you're an event technician, exhibition builder, DJ, theatre or corporate client, our team provides expert advice to help you select the right truss system for your application.

Discover the full range of professional event technology at LTT – your reliable partner for high-quality equipment, technical expertise and exceptional service.

FAQ – Questions & Answers