Locate, expose and prove buried services before anyone digs. NDD for Brisbane designers, contractors and asset owners who need certainty about what is in the ground.
Non-destructive digging, usually shortened to NDD and sometimes called non-destructive excavation, is how an underground service is exposed without a bucket, auger or hand tool striking it. The ground is loosened with pressurised water or compressed air and lifted away by vacuum, leaving the asset in plain view, undamaged, ready to be measured and recorded.
On Brisbane projects NDD is rarely a job in its own right. It is the step between a plan that says where a service should be and the design, bore or excavation that depends on it actually being there.
Non-destructive digging is the practice of exposing services without mechanical contact. Hydro excavation, which cuts with water, is the most common way Dynamic does it, and air excavation is the dry alternative. Both are delivered under the Hydro Excavation & Non-Destructive Digging service. This page covers how NDD is used on Brisbane projects.
Brisbane carries some of the oldest reticulation in Queensland, and asset records in the inner suburbs are not always complete. A service shown on a plan may be deeper or shallower than drawn, offset from its recorded line, or sharing the ground with something that was never recorded at all.
Potholing by NDD closes that gap. Each exposure confirms the type, depth and alignment of what is really there, so the risk is resolved on paper instead of in the trench.
A sound NDD job follows the same order every time. Plans are obtained through Before You Dig Australia. The site is then located, which within the Dynamic Group can be done by LADS. Only then is the ground opened, carefully, with the locate marks in view.
Exposed services are left visible for the surveyor or engineer to record, then protected and reinstated as the site requires. NDD reduces the risk of a strike but does not remove it on its own, which is why the locate always comes first.
Hydro excavation cuts compacted and clay ground well, so it handles most Brisbane conditions. Air excavation keeps the hole and the spoil dry, which suits work inside buildings, plant rooms and finished areas, around tree roots that must be preserved, and anywhere the spoil should go back in as backfill.
Dynamic is rolling out Vacvator air excavation units across the network alongside the hydro fleet. Which method suits a Brisbane site, and whether an air unit is available for your dates, is confirmed when the work is scoped.
Designers commission NDD potholing to fix the position of services before a new alignment is set. Contractors use it to prove crossings ahead of boring, piling or open trenching. Utilities use it to confirm their own assets before maintenance, and asset owners commonly specify non-destructive methods for any excavation close to their services.
Utility, telecommunications and council programmes often need many exposures across many sites. Those are planned as a programme, with units and crews allocated to the sequence, rather than booked as separate call-outs.
Potholing programmes that confirm asset positions ahead of renewals and upgrades.
Exposing conduit and cable before new network works cross existing routes.
Design and construction-stage proving on road, drainage and civil packages.
Proving services ahead of council capital works, footpaths and streetscape upgrades.
Clearing pile and footing locations before foundations begin.
The core of the fleet. Truck-mounted vacuum units for hydro excavation, service exposure and material recovery.
Supplied for: Hydro Excavation, Vacuum Excavation, Vacuum Loading
High-capacity 10x4 units for larger volumes and sustained excavation and recovery programmes on major projects.
Supplied for: Hydro Excavation, Vacuum Excavation, Hydro Tankers
Off-road capable units, including 4x4 CCTV capability, for remote and difficult-access worksites.
Supplied for: CCTV Pipe Inspections, Underground Locating (LADS), Emergency Response
Safety on site
If the excavation is close to known or suspected services, NDD is the safer way to expose them, and asset owners commonly require it. Once the services are exposed and marked, an excavator can often remove bulk material around them. Dynamic supplies both, so the handover between methods can be planned as one job.
That depends on what your project needs. Exposed assets are left visible so your surveyor or engineer can record them before reinstatement. If you need depths or photographs recorded in a particular format, raise it at enquiry so it is scoped in.
Yes. Underground service locating is available through LADS, part of the Dynamic Group, so locating and NDD can be booked together and sequenced into the same access window.
Potholing, service proving and trenching beside live assets across the metropolitan area.
Operated vac trucks for excavation, pit clean-outs and material recovery.
Stormwater and sewer camera inspection, blockage investigation and condition records.
Underground utility locating delivered by LADS, part of the Dynamic Group.
Industrial vacuum excavation for safe, efficient exposure and removal of material.
Excavators with experienced operators for civil earthworks and site preparation.
Drain-camera inspection and pipe-condition assessment for planning and asset management.
Non-Destructive Digging in other regions: Non-Destructive Digging Gold Coast, Non-Destructive Digging Sydney, Non-Destructive Digging Hervey Bay
Project evidence
Brisbane case studies where hydro excavation formed part of the scope.
Related insights
Written by the people who run this work, on how jobs are planned and what changes on site.
Non-destructive digging removes the mechanical cutting edge from the excavation, which is what makes it suitable for work around live services. It helps reduce the risk of a service strike, but only as part of a sequence that starts well before a truck arrives.
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Air excavation uses compressed air rather than water to break up ground around buried services. Dynamic is rolling out Vacvator units across its East Coast operations, adding a dry option alongside hydro excavation.
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LADS, Locate & Detection Specialists, joined the Dynamic Group in 2026. It brings CERTLOC accredited underground service locating and ground penetrating radar in house, alongside the excavation and inspection fleet.
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Read ArticleTell us about the site and the work and the Brisbane team will respond. For urgent works, call 1300 822 878.
What to send us for an accurate hydro excavation quoteStep 1 of 6: Service