Different Kinds of Truss for Events in Los Angeles 2026

Truss is an important metal framework that is used for supporting audio speakers, lighting, video screens, banners, and other elements of staging. It comes in different types. Since different event setups require different support systems, choosing the right type of truss is important for creating a safe and functional stage.

From lighting truss and goal post systems to box truss and ground-supported structures, each option has its own applications.

In this guide, we’ll explore the different types of event truss available in Los Angeles and where each one is commonly used.

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Truss Types by Shape

Most event truss is built from 2" aluminum tubes called chords, tied together with smaller diagonal braces. The number of chords decides the shape, and the shape decides how much work the truss can handle.

• Ladder truss: Two chords running side by side. It is light and affordable, so it works for small indoor lighting positions, DJ booths, and simple displays. It is not built for heavy loads or long spans.
• Triangle truss: Three chords that form a triangle. It is stronger than ladder truss and still easy to carry, which is why you'll see it at trade shows, small stages, and decorative arches.
• Box truss: Four chords in a square. This is the workhorse of the live event industry. It carries heavier loads over longer spans and is what most concert stages, festival roofs, and LED walls are built on.
• Round and curved truss: Box or triangle truss formed into circles and arcs. Designers use it for circular lighting rigs, halos over a stage, and entry arches that give a space a signature look.

Box Truss Sizes: 12" vs. 20.5"

This is where a lot of guides stop short. In the US, box truss mostly comes in two widths, and the choice between them matters more than most planners realize.

• 12" box truss: The go-to for mid-size builds. It works well for goal posts, corporate stages, trade show booths, and lighting grids over moderate spans.
• 20.5" box truss: The heavy hitter. It carries more weight over longer distances, so it shows up on concert roofs, large video walls, and festival main stages.

Plenty of productions use both. A common build runs 20.5" truss across the main span, with 12" truss handling the lighter positions below it.

Truss Types by Setup

How the truss is held up is just as important as its shape.

• Flown truss: Hung from the venue's ceiling with chain motors. It keeps the floor clear, but the building has to be rated for the load.
• Ground support systems: Freestanding towers that lift truss into the air without relying on the ceiling. These are standard for outdoor events and venues without solid rigging points.
• Goal post truss: Two vertical towers joined by a beam across the top. It is a simple, popular way to hold a backdrop, sponsor banner, LED screen, or a row of lights.
• Roof systems: Full truss grids with a cover on top that protect performers and gear from sun and rain at outdoor shows.
• Modular truss: Newer 6" and 12" mod truss bolts together on every side without corner blocks. It is a strong fit for exhibits, LED wall supports, mezzanines, and custom scenic builds.

Why Truss Planning Is Different in Los Angeles

Building in LA comes with challenges that generic truss guides don't cover.

• Wind and seismic loads: Outdoor structures in California need engineering that accounts for wind and earthquake forces, and freestanding truss needs proper ballast to stay put.
• Permits and fire marshal approval: Temporary structures often need stamped engineering drawings before the city signs off.
• Tight load-in windows: Downtown traffic and older venues with narrow access mean fast-assembling truss saves real money on labor.
• Camera-ready finishes: LA hosts a lot of TV, award shows, and brand shoots. Black truss disappears on camera, while natural silver suits a raw, industrial look.

Tips for Choosing the Right Truss for Your Event

• Start with the load: List everything the truss will hold, including lights, speakers, LED panels, and cable. Then check it against the manufacturer's load tables with a safety margin built in.
• Measure the span: Wider spans need stronger truss. If yours is long, step up to a 20.5" box truss or add support in the middle.
• Know your venue: Find out whether the building has rated rigging points. If it doesn't, plan on ground support.
• Plan for ballast outdoors: Base plates alone won't hold up in the wind. Engineered ballast keeps towers and goal posts stable.
• Ask where the truss was made: Truss that is manufactured and structurally tested in-house from 6061-T6 aluminum gives you more confidence in its ratings.
• Book early: Festival and award season in LA ties up inventory fast.

Build Your Next Event with Accurate Staging

At Accurate Staging, we weld and build our own 12" and 20.5" box truss, round truss, and mod truss in-house. Pair it with our patented Smart Block ballast, which works as both a weighted base and a truss connection point, and you get a structure engineered to perform from load-in to strike.

Request a quote and let us help you choose the right truss for your next Los Angeles event, built to be always, unmistakably Accurate.

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