EVT290S‑C300 — 90 degree curved truss segment for building 10 ft (3 m) square‑truss circles

EVT290S-C300 | 9.84ft Truss Circle

Original price was: $5,081.00.Current price is: $3,387.00.

EVT290S-C300 — 3m (9.84 ft) Diameter Square Aluminum Truss Circle (90 Degree Arc)

Dimensions
Circle Diameter: 9.84 ft (3 m) Outer Diameter
Inside Diameter: 7.94 ft (2.42 m)
Truss Profile: 11.41 in (290 mm) Square
System Configuration: Composed of 4x 90 Degree Arc Segments

Construction
Material Type: Aluminum Alloy EN AW-6082 T6
Main Tubing: 1.96 in (50 mm) Outer Diameter with 0.08 in (2 mm) Wall Thickness
Brace Tubing: 0.78 in (20 mm) Diagonal Bracing with 0.08 in (2 mm) Wall Thickness

Finish & Features
Surface: Aluminum Brush Finish
Certification: TUV certified
Connection Type: Conical Connection System (Includes Couplers, Tapered Pins, and R-Clips)
Compatibility: Fits F34, EVT290S, and all standard 290mm Square Truss systems
Weight: 124 lb (56.24 kg)

In stock

SKU: EVT290S-C300 Category:

EVT290S Circular Truss Knowledge Center

EVT290S-C300 9.84 ft Circular Square Truss System.
A Large-Format, Four-Segment Truss Circle for Grand Entrances, Stage Backdrops, and Overhead Lighting Grids.

The EVT290S-C300 is a complete 3.0-meter circular truss assembly constructed from four matching 90-degree arc segments. When connected, the segments form a 9.84 ft outer-diameter circle with a 7.94 ft internal opening — large enough to frame a full stage backdrop, entrance arch, or dance floor rather than a single fixture cluster. The circular geometry provides a continuous structural perimeter for large-scale lighting grids, suspended visual elements, grand entrances, and stage environments where a commanding, large-format circular presence is the goal.

Product Facts

Model EVT290S-C300
Product Type Circular Square Truss
Outer Diameter 3.0 m / 9.84 ft
Inside Diameter 2.42 m / 7.94 ft
Configuration 4 × 90° Arc Segments
Weight 124 lb / 56.24 kg
3.0 m Outer Diameter
4 × 90° Arc Segments
124 lb Complete Weight
50 × 2 mm Main Chords
Conical Connection System

Product Overview

A Large-Format Circular Truss Built from Four Transportable Arc Sections.

Rather than functioning as an individual corner or straight truss section, the EVT290S-C300 creates a complete, large-diameter circular structural form. Four 90-degree arcs connect sequentially to produce a continuous 360-degree perimeter nearly 10 feet across, providing a defined center point and consistent radius suitable for framing an entire stage, entrance, or floor area rather than a single localized fixture position.

360-Degree Geometry
Four matched quarter-circle sections combine to create one complete circular truss assembly.
3-Meter Outer Diameter
The assembled circle measures 3.0 m / 9.84 ft across its exterior diameter — large enough to frame a stage, dance floor, or entrance rather than a single fixture cluster.
2.42-Meter Internal Opening
The center opening measures approximately 2.42 m / 7.94 ft, large enough to walk performers, vehicles, or set pieces through the ring itself.
Modular Four-Piece Construction
Dividing a nearly 10-foot circle into four quarter sections keeps each individual arc transportable and storable despite the assembly's overall large-format scale.

Common Applications

A Large-Diameter Circle Built for Commanding, Large-Format Visual Statements.

At nearly 10 feet across, the C300 is sized for applications where the circle itself needs to dominate the space — framing an entire performance area, a grand entrance, or a full-width backdrop — rather than surrounding a single piece of equipment or a small display.

01
Grand Entrance Arches
Frame a walk-through or drive-through entrance at a scale large enough for guests, talent, or vehicles to pass beneath.
02
Stage Backdrops
Provide a full-scale circular backdrop element behind a main stage, band shell, or presentation area.
03
Overhead Lighting Grids
Distribute fixtures around a wide-diameter ring to cover an entire stage, dance floor, or general session area from above.
04
Dance Floor Framing
Ring an entire dance floor or gathering space rather than a single performer or booth position.
05
Large-Format Trade Show Booths
Create a signature circular header or hanging structure sized for a large commercial booth footprint.
06
Architectural Centerpieces
Serve as a standalone large-scale visual form, or anchor a larger modular truss layout as its central circular feature.

Who It’s For

For Large-Scale Productions Where the Circle Itself Is a Focal Structure.

The C300 is intended for productions and installations operating at a scale where a nearly 10-foot circular truss functions as a primary structural and visual element, not an accent piece.

Large-Venue Lighting Designers
For overhead grids that need to cover a full stage or floor area from a single circular rig.
Event & Production Companies
For galas, concerts, grand-entrance builds, and large-format temporary structures where scale is part of the impact.
Trade Show & Exhibit Designers
For flagship or large-footprint booths that need a signature circular structure sized above standard display truss.
Stage & Scenic Designers
For backdrops and set pieces that require a large, self-supporting circular form as a central design element.

System Configuration

Four 90-Degree Arc Sections Form the Complete Circle.

The C300 is divided into four quarter-circle sections, each substantially longer than on smaller EVT290S circles due to the larger overall diameter. Every interface uses the conical connection method so the individual arcs can be joined into one continuous circular assembly.

4 × 90° Arc Segments
Four matched arc sections, averaging roughly 31 lb each, create the full 360-degree circle when assembled in sequence.
Conical Couplers
Couplers align and mechanically connect the adjoining arc receivers across all four joints.
Tapered Pins & R-Clips
Pins secure the couplers while R-clips retain the installed pins at each of the four connection points.
At this diameter, uneven arc closure is more visible and more structurally significant.

Assemble each connection completely and verify that the arcs close naturally into the full 9.84 ft circular geometry before lifting. Because the span between joints is longer than on smaller EVT290S circles, do not use excessive mechanical force to compensate for damaged components, incorrect orientation, or incompatible connection dimensions — forcing a long-radius joint can distort the entire ring.

Technical Reference

EVT290S-C300 Specifications

Key dimensions and construction data for identifying the complete circular assembly and evaluating its fit within a larger truss design.

Geometry

Circle Dimensions

Model EVT290S-C300
Outer Diameter 3.0 m / 9.84 ft
Inside Diameter 2.42 m / 7.94 ft
Truss Profile 290 mm / 11.41 in Square
Configuration 4 × 90° Arc Segments

Construction

Tubing & Material

Material EN AW-6082 T6 Aluminum
Main Tubing 50 mm OD / 2 mm Wall
Brace Tubing 20 mm OD / 2 mm Wall
Finish Brushed Aluminum
Complete Weight 124 lb / 56.24 kg

Assembly Interface

Connection System

Connection Type Conical Connection System
Connection Hardware Couplers, Tapered Pins, R-Clips
Certification TUV Certified

Compatibility

System Fit

Primary System EVT290S
Compatibility Fits F34, EVT290S, and all standard 290mm Square Truss systems
Main Chord Diameter 50 mm / 1.96 in
Complete Geometry 360° Circular Assembly

System Integration

Fits F34, EVT290S, and All Standard 290mm Square Truss Systems.

The circle can function as a standalone structural shape or integrate with compatible square truss components where the design provides the appropriate connection points. Given the C300's larger diameter and higher segment weight, this compatibility should be confirmed against the actual connection geometry — and against the specific load table for this diameter — before the structure is lifted or loaded.

EVT290S Integration
The C300 uses the connection architecture associated with the EVT290S product family.
F34 Compatibility
Fits F34 truss, connecting with standard F34-format square truss straights and corners.
Standard 290mm Systems
Fits all standard 290mm square truss systems, using the common conical connection method found across the format.
Mixed-System Verification
Connector spacing, coupler geometry, chord alignment, and diameter-specific load data should be checked before combining brands at this scale.
Compatibility with F34, EVT290S, and standard 290mm systems describes the connection format, not universal structural interchangeability.

A successful physical test fit does not establish identical load capacity, and load behavior at a 3.0 m diameter is not simply a scaled-up version of smaller EVT290S circles. When combining manufacturers, verify the mechanical interface and evaluate the complete structure using the load table for this specific diameter.

Assembly Overview

Build the Circle on the Ground and Verify Closure Before Lifting.

The four-segment design keeps the geometry manageable despite the C300's large overall footprint: each arc, at roughly 31 lb, contributes one quarter of the final 9.84 ft circle. Ground assembly allows the connections, orientation, and final closure of the ring to be inspected before the complete large-format structure is elevated.

01 — Identify the Four Arcs
Lay out the matching 90-degree sections in their intended circular orientation, allowing enough floor space for the full 9.84 ft footprint.
02 — Inspect Connection Points
Check receivers, chords, braces, welds, couplers, pins, and clips before joining sections.
03 — Connect Sequentially
Join adjacent arcs using the compatible conical couplers and associated connection hardware, using two people per joint given the segment weight.
04 — Close the Final Interface
The final pair of receivers should align without forcing the circle out of its intended geometry — at this diameter, forcing a joint can visibly warp the frame.
05 — Secure Every Connection
Confirm that tapered pins are fully seated and all required retaining clips are installed at all four joints.
06 — Inspect the Complete Ring
Verify circular alignment, connection security, attachment points, and the planned lifting configuration before elevating a structure of this size.

Safety & Engineering

A Larger Span Changes How Loads and Support Points Must Be Planned.

Circular truss loads must be calculated differently than straight spans, and that difference becomes more pronounced as diameter increases. The C300 should be evaluated as a complete structural assembly rather than as four independent arcs, and its specific load table should be consulted rather than assumptions carried over from smaller EVT290S circles. Capacity depends on support locations, suspension points, attached equipment, load distribution, connection condition, dynamic forces, and how the circle is incorporated into the larger system.

Consult the load table specific to the 3.0 m / 9.84 ft diameter — do not assume load behavior scales linearly from smaller EVT290S circles.
Inspect chords, diagonal bracing, welds, receivers, and conical couplers for stress cracks before each assembly.
Do not use an arc segment showing permanent deformation, cracked welds, damaged receivers, or other structural defects.
When rigging from the circle, keep hanging points evenly spaced around the full 9.84 ft circumference to prevent warping the frame.
Include fixture weight, cabling, accessories, dynamic effects, and any other attached loads in the system evaluation — the larger surface area typically carries more fixtures than smaller circles.
Test-fit mixed-brand connections at ground level before incorporating them into an elevated structure of this size.
All overhead configurations at this diameter must be reviewed by a qualified rigger or structural engineer.

Product Questions

Frequently Asked Questions

How is the 3-meter circle shipped?

The EVT290S-C300 ships in four separate 90-degree curved segments. This modular design makes transport easier and allows for more compact storage than shipping a single-piece 9.84 ft structure.

Is this circle compatible with other 290mm truss?

Yes. It utilizes the standard conical connection system found on most 290mm box truss and fits F34, EVT290S, and all standard 290mm Square Truss systems. Verify connector geometry directly before combining brands at this diameter.

Can I fly or suspend this truss circle?

Yes, the EVT290S-C300 is designed for overhead suspension. All rigging points must be approved by a structural engineer, and load must be distributed evenly around the full 9.84 ft circumference to prevent deformation — this matters more at this diameter than on smaller circles.

What is the usable opening inside the circle?

The listed inside diameter is approximately 2.42 m / 7.94 ft — large enough to walk performers, set pieces, or small vehicles through the opening, not just fit a display or fixture inside it.

What are the safety requirements during assembly?

Wear suitable personal protective equipment at all times. Before every use, visually inspect all welds, chords, and conical couplers for damage, and confirm all pins are fully seated and secured with R-clips. Because each arc weighs roughly 31 lb, plan for two people per connection point during assembly.

Planning a large-format circular backdrop, entrance, or lighting grid?

Contact us for large-diameter circular truss selection, matching EVT290S components, F34 / 290mm compatibility review, diameter-specific load tables, suspension planning, base and support components, custom layout assistance, engineering coordination, and freight requirements.

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