Excavation starts above ground, but many of the risks sit below it.
For construction, civil and infrastructure projects, existing plans provide an important starting point. However, underground services may have been relocated, extended, abandoned or inaccurately recorded over time.
Ground Penetrating Radar (GPR) and underground service locating can help project teams investigate existing underground conditions before excavation begins.
Why Is Underground Service Locating Important?
Understanding the location of existing underground services can help project teams:
- Plan excavation works more effectively
- Identify potential conflicts with existing infrastructure
- Reduce the risk of unexpected site conditions
- Minimise delays and unnecessary rework
- Support safer construction activities
Before excavation, Before You Dig Australia (BYDA) provides access to plans and information from registered asset owners. These records are an important part of project planning, but they may not give the exact position, depth or condition of underground assets. Where further investigation is required, underground service locating and subsurface investigation can provide additional information in the field.
What Is Ground Penetrating Radar (GPR)?
Ground Penetrating Radar (GPR) is a non-destructive investigation technology that uses electromagnetic waves to detect changes and objects below the ground surface. It can be used alongside other locating methods to investigate underground infrastructure and identify potential services before excavation.
Territory Surveys provides a range of underground service locating options, including:
- Underground service locating
- GPR and electromagnetic locating
- Utility mapping
- Survey of located services
- BYDA investigation
- Service plans and digital deliverables
Collecting radar data is only part of the job. The real value is in the site information that engineers, contractors and project teams can act on.
Experience Matters in Underground Locating
GPR technology is only part of the investigation. Site conditions, surface materials, surrounding infrastructure and the type of underground asset can all affect what can be detected and how the results are interpreted.
At Territory Surveys, Denis and Anthony bring hands-on experience using Ground Penetrating Radar (GPR) across construction, infrastructure, defence and remote projects. Their surveying background also means underground findings can be considered alongside the wider site conditions and project requirements.
This combination of GPR, locating expertise and surveying experience helps provide project teams with more useful information before excavation begins.
Supporting Better Decisions Before Excavation
For engineers, contractors and project managers, understanding underground conditions early can help inform excavation planning and reduce uncertainty on site.
Territory Surveys provides underground service locating and utility locating services across the Northern Territory and Western Australia, supporting construction, civil, infrastructure, defence and remote projects. Our approach pairs accurate survey data with practical field expertise, so the information you receive is directly useful on site.
Planning excavation works? Talk to our team about locating the services on your site.