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Glossary

Boom

What is Boom?

The boom is the movable arm on a hydrovac or vacuum truck that positions and supports the large vacuum hose over the dig site, letting operators reach into excavations and rotate the suction tube precisely.

The boom carries the vacuum tube from the debris body to the excavation, allowing the operator to swing, extend, and lower the suction hose without dragging it by hand. Boom reach, measured in feet, and rotation determine how far from the truck a crew can dig, which matters for road setups, deep holes, and hard-to-access sites.

Many booms are hydraulically controlled and paired with a telescoping vacuum tube for extra depth. Boom reach is a common spec expressed as a range. On Vac4Rent, submit a free request and rental companies can match boom reach to your access and depth requirements.

Guides that cover Boom

Related terms

Dig Tube / WandHydrovac TruckVacuum TruckHydrovac

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Boom: common questions

What is Boom?+

The boom is the movable arm on a hydrovac or vacuum truck that positions and supports the large vacuum hose over the dig site, letting operators reach into excavations and rotate the suction tube precisely.

How do I figure out how much boom reach my job needs?+

Measure the distance from where the truck can safely park to the farthest dig location, and account for traffic control, curbs, fences, trees, and other obstacles. Consider depth as well, since a deep hole may need a telescoping tube or extra hose. If the truck cannot get close to the work, extension hoses may help but can reduce suction. Share site photos or a sketch with the rental company to confirm reach.

What are the safety concerns when using a vacuum truck boom near power lines?+

A boom raised or swung into overhead power lines can energize the truck and injure or kill workers nearby. Crews should survey for overhead lines before setting up, keep required clearance distances, and use a dedicated spotter when working close to lines. Required clearances depend on line voltage and on OSHA and state rules, so check applicable requirements and contact the utility if work must happen near energized lines.

Can a vacuum truck boom be controlled remotely?+

Many modern hydrovac and vacuum truck booms can be operated with a wireless or tethered remote, letting the operator stand at the excavation and watch the dig tube while moving the boom. This improves visibility and precision compared with controls fixed to the truck. Features vary by manufacturer and model, so ask the rental company whether the unit includes a remote, how it works, and whether training is provided.