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Utility locating before excavation on a civil construction site

Before excavation

Underground Locating Services Before Excavation

A pre-start meeting cannot remove underground risk if the site team still relies on old plans. HR Utilities locates services before trenching, drilling, piling, and civil works reach them.

We use BYDA records, GPR, electromagnetic induction, and survey control to give project teams a clearer map of what sits below the work zone.

Find services before the excavator finds them

Construction teams often receive utility records late, in PDF form, or without enough field confirmation. That leaves supervisors making safety decisions with unclear data.

HR Utilities investigates the work zone before ground disturbance starts. We mark detected services, map them when required, and document the confidence level so crews know what they can rely on.

Book before these works start

Underground locating should happen before the work creates a safety or programme risk.

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Trenching and service installation

Locate existing services before new trenches cross unknown or congested corridors.

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Piling, drilling, and boring

Check utility routes before deep works, anchor points, or bore paths enter a service zone.

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Road and civil works

Map utilities for road upgrades, subdivisions, drainage works, and civil infrastructure projects.

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Sites with missing plans

Use field detection when BYDA records, private asset plans, or as-builts do not match site conditions.

Pre-excavation locating process

HR Utilities gives your team a clear investigation path before machinery enters the ground.

  1. 1

    Review scope, work zone, BYDA records, and available as-builts.

  2. 2

    Inspect visible service indicators such as pits, valves, drains, poles, and surface changes.

  3. 3

    Use EMI and GPR to detect conductive and non-conductive services.

  4. 4

    Mark findings on site and record depth indicators where conditions allow.

  5. 5

    Provide mapped deliverables and AS5488 quality notes where the project requires them.

Pre-excavation outputs

  • Site markings for detected services
  • Utility plan or report for supervisors and project managers
  • Survey-grade CAD/GIS data when scoped
  • Recommendations for service proving or physical verification at high-risk locations

Questions project teams ask

Should I locate services even if I have BYDA plans?

Yes. BYDA plans are the starting point. Field locating checks what is in the ground now and helps identify missing, altered, or private services.

How close to excavation should locating happen?

Book locating early enough to change the work plan if needed. For active construction, refresh the locate when markings, site conditions, or work scope change.

Can HR Utilities support urgent pre-excavation checks?

Yes. Contact the team with the work location, excavation date, service risk, and required deliverables so HR Utilities can confirm availability.

Ready for Precision Utility Mapping?

Expert utility locating services with BYDA certified precision.

Serving projects across Australia with advanced subsurface mapping solutions.