Diameter 20ft Half Circle Truss

20ft diameter half circle aluminum truss with 289×289mm structure, designed for stage lighting and exhibition setups. Modular curved truss system for circular layouts, offering stable connection and flexible design configurations.

What is a 20ft Half Circle Truss?

A 20ft half circle truss is a curved aluminum truss structure forming a semi-circular arc, commonly used to create circular or decorative lighting layouts in stage, exhibition and event environments.

Product Overview

This product is a 289×289mm aluminum curved truss system, designed to form a half-circle structure with a 20ft diameter, divided into 4 modular arc sections for easy transport and assembly.

It is ideal for:

• stage lighting design

• exhibition display structures

• decorative event setups

Explore full systems:
Lighting Truss System
Custom Truss Systems

packing weight: 85kg

packing volume: 2.2cbm

Item	Specification(squre truss)						Qty
	angle			main tube(mm)		size(mm)
Arc Truss	45.00 degree			50×3.0		CS289×289	4 pcs
Truss Accessory	Conical coupler & Safrty clip & pin						whole set

Key Specifications

• Diameter: 20ft (half circle)

• Structure: Curved / arc truss

• Section Quantity: 4 pieces (45° each)

• Truss Size: 289×289mm

• Main Tube: 50×3.0mm

• Connection: Conical coupler, safety clip and pin

• Packing Weight: 85kg

• Packing Volume: 2.2cbm

Structural Logic 

This system is:

• a modular arc unit

• can be used alone (half-circle)

• or combined into a full circle

4 sections × 45° = 180° (half circle)

Why Use Half Circle Truss?

1. Flexible Circular Design

Can be used to create:

• half-circle stage backdrop

• full circular lighting rig (by combining sets)

• layered ring structures

2. Balanced Load Distribution

Curved geometry allows:

• smoother load transfer

• evenly distributed lighting weight

→ Load Analysis for Modular Stage Systems

3. Modular Transport & Assembly

Divided into sections:

• easy to transport

• quick to assemble

• scalable design

→ Modular System Logic

Application Scenarios

Stage Lighting Design (Centerpiece Structure)

→ Concert & Event Stage Solution

Exhibition Display Structure

→ Exhibition Booth Solutions

DJ & Club Lighting Ring

→ Club Truss Systems

Wedding & Decorative Lighting Setup

→ Wedding Ceremony Applications

Engineering Insight 

Curved Truss ≠ Straight Truss

Key differences:

• load direction changes along the curve

• connection precision is critical

• suspension points must be balanced

Connection System Matters

This system uses:

• conical coupler

• safety clip

• pin connection

Which ensures:

• fast assembly

• secure alignment

→ Connection & Material System

Hanging vs Ground Support

Half circle truss can be:

Hanging:

• cleaner visual

• requires rigging

Ground support:

• easier setup

• more stable

→ Engineering & Solution

Material & Structural Safety

Material quality directly affects:

• bending resistance

• connection strength

• long-term durability

→ Aluminum Material Guide

Installation Safety

Improper assembly may cause:

• misalignment

• structural instability

• uneven load distribution

→ Installation Methodology Guide
→ Safety Standards

FAQ 

Can this form a full circle?

Yes, two sets can be combined to form a complete circular truss.

Is 289mm truss strong enough?

Yes, it is the standard size for medium-duty lighting systems.

Can it be hung from ceiling?

Yes, but requires proper rigging and load calculation.

Can I customize the diameter?

Yes, custom sizes and segment configurations are available.

→ Custom Stage Production

Related Products & Systems

• Circular / Custom Truss

• Lighting Truss Products

• Stage Truss Systems