Boom Arm for Truss - Clamp On, Black

Hire TRUSSBOOM — 500mm Clamp-On Truss Boom Arm

The TRUSSBOOM is a 500mm aluminium boom arm that clamps to any vertical or horizontal 38 to 51mm tube and extends horizontally at 90 degrees, giving a fixture mounting point off the side of a truss column, totem, scaffolding upright, goal post, or any other standard tube structure. The arm is fixed horizontal — no tilt adjustment — with a dual pipe clamp at one end that grips the support tube, and a fixture mounting point at the other. Safe working load 150kg. Hire code HTRUSSBOOM, hired individually in any quantity needed.

The construction is 6061-T6 aluminium with a black powder-coated finish, the same material and finish used across the Edwards truss range, so it sits cleanly alongside the TOTEMs and other truss components without looking like an afterthought. The dual clamp provides a secure and stable grip on the support tube at the clamp end, with the 350mm usable arm from the support strut join to the fixture position.

This is a rigging accessory rather than a standalone product — it needs something to clamp to and something to hang from it. The most common use is alongside the TOTEMs and vertical truss, where one or more boom arms at different heights along the column convert a simple vertical fixture stand into a multi-position lighting tree.

Specifications:

• Total length: 500mm
• Usable arm length from support strut join: 350mm
• Clamp range: 38mm to 51mm tube diameter
• Safe working load: 150kg
• Clamp type: dual pipe clamp, fixed horizontal at 90 degrees
• Material: 6061-T6 aluminium
• Finish: black powder coat
• Hire unit: single arm, hire any quantity

What It's Used For

Adding fixture positions to a TOTEM truss column. The standard totem configuration puts one fixture on top of the column. Adding boom arms at one or two heights along the column face creates a lighting tree with multiple fixture positions — a moving head on top, a PIXBAR12H pixel bar on a mid-height boom pointing outward, and a PAR can or battery uplight on a lower boom for floor-level fill or uplighting. The result is a single structural element that carries a complete range of fixture types at different heights and angles, which is both space-efficient and visually clean.

Extending a truss portal or goal post outward. On a horizontal truss bar between two totem columns, boom arms pointing downward or outward can add fixture positions below the truss line without additional vertical structure. PAR cans, pixel bars, and smaller wash heads can all be mounted this way to add positions at mid-height between the floor and the top of the totem.

Clamping to scaffolding and venue structures. In venues with existing scaffolding, rigging bars, or pipe structures, the TRUSSBOOM clamps to any tube in the 38 to 51mm range and adds a fixture point at any position along that structure. This is useful for supplementing a venue's existing infrastructure with hired fixtures without requiring a full hired truss structure.

Speaker clusters and effect machine mounting. The 150kg SWL covers most lighting fixtures and smaller speakers. For production configurations where a speaker, a hazer, or an effects machine needs to be positioned off the side of a truss structure rather than on the floor, the boom arm provides the mounting point. Confirm the weight of the specific fixture against the 150kg limit before mounting.

Using Boom Arms with the Totem Range

The TRUSSBOOM clamps to the 300mm square truss section of the TOTEM2.5, TOTEM2, and TOTEM1 columns. Multiple arms can be mounted at different heights on the same column. There is no fixed spacing requirement, so arms can be positioned wherever the design requires along the column height.

A few configurations that work well:

One arm at 1.8 metres on a TOTEM2.5 with a PIXBAR12H pointing outward over the stage, and a moving head on top. This gives a two-level fixture arrangement from one structural element, with the top fixture providing beam and gobo effects and the mid-height bar providing a colour wash below it.

Two arms at 1.2 and 2.0 metres on a TOTEM2.5 with PAR cans or battery uplights on each arm pointing inward across the stage, supplementing top fixtures with side light at different heights. Side light from boom-mounted fixtures at mid-height adds dimension and depth to a stage picture that overhead and floor fixtures alone cannot produce.

Frequently Asked Questions — TRUSSBOOM Hire

What tube sizes does the clamp fit?

The dual clamp fits tubes from 38mm to 51mm diameter, which covers standard truss chord tube, scaffolding pipe, and most lighting and speaker pole diameters within that range. It will not fit the square truss section directly; it clamps to the round tube chords of the truss rather than the face of the section.

Is the arm angle adjustable?

No. The arm is fixed horizontal at 90 degrees to the clamped tube. There is no tilt adjustment at either the clamp end or the fixture end. Position the clamp on the support tube at the height required and the arm extends horizontally from that point.

What attaches to the fixture end of the arm?

The fixture end is a bare tube end at 500mm from the clamp. Fixtures attach via a standard lighting clamp in the same way they would clamp to any tube structure. Most lighting fixtures in the Edwards hire fleet include a clamp or can accept a standard hook clamp. Confirm the fixture's mounting hardware at the time of booking if you are unsure.

How many boom arms can I put on one totem?

There is no fixed limit on the number of arms per column, but practical considerations of weight distribution, stability, and visual balance apply. For the TOTEM2.5 with a heavy fixture such as the HAVOCW19 on top, adding multiple boom arms with additional fixtures increases the load on the base and raises the centre of gravity. Use the included sandbags on the base plate, position the totem on a stable flat surface, and keep it clear of foot traffic. If the configuration involves significant weight at multiple heights, contact the Edwards hire team to discuss whether additional ballast or securing measures are appropriate.

Can I use it on scaffolding or a venue's existing pipe structure?

Yes, provided the tube diameter is within the 38 to 51mm clamp range. The TRUSSBOOM is a general-purpose rigging accessory and is not limited to Edwards truss equipment. It clamps to scaffolding uprights, horizontal bars, goal post structures, and any other suitable tube within the clamp range.

How many do I need?

Hire as many as the design requires, one at a time. There is no minimum or set quantity. The Edwards hire team can advise on how many are typically used for common configurations if you are unsure.

Is delivery and setup available?

Yes. The TRUSSBOOM is a small and lightweight component that is straightforward to self-collect and fit on site. For events where multiple boom arms are being used as part of a larger totem and truss configuration with heavy fixtures, delivery and setup by an Edwards technician ensures everything is safely assembled and correctly weighted. Contact the hire team at hire@edwardsnz.co.nz or (09) 571 0551 to discuss your event.