Electromagnetic and GPR Surveys

Ground Penetrating Radar Survey in the Philippines

Groundwatch uses GPR survey workflows for utility detection, concrete scanning, pavement assessment, and shallow anomaly screening before excavation, coring, and construction.

Definition

What this method is

Ground Penetrating Radar (GPR) sends radar signals into the ground, concrete, or pavement to map shallow subsurface contrasts and buried targets where site conditions allow.

Groundwatch uses GPR survey workflows for utility detection, concrete scanning, pavement assessment, and shallow anomaly screening before excavation, coring, and construction.

How It Works

From field measurement to interpreted model

1A GPR antenna transmits radar pulses into the ground, slab, or pavement surface.
2Reflections are recorded when radar energy meets changes in material, moisture, reinforcement, utilities, or shallow voids.
3Processed radargrams and depth slices are interpreted to support underground utility mapping and construction risk decisions.

When to Use

Best-fit conditions for this method

Utility detection before excavation or coring
Concrete and slab scanning for retrofit or fit-out work
Pavement GPR and shallow corridor screening where rapid coverage is needed

What It Can Help Identify

Subsurface features and signals

Buried utilities and shallow structures
Rebar, conduits, slab features, and possible void indicators
Rapid changes in shallow ground conditions, fill, and disturbed zones

Deliverables

What you receive

Survey coverage and line maps
Interpreted radar profiles and depth slices
Annotated target interpretation with priority verification notes

Typical Outputs

What the data looks like

Utility mark-up map
Radargrams and depth slices
Shallow target list for field validation

Applications

Common applications in the Philippines

Underground utility mapping Philippines for construction and redevelopment

Concrete scanning Philippines for coring, cutting, and retrofit planning

Pavement GPR Philippines and shallow subsurface investigation Philippines for corridor works

Method Limitations

What this method cannot do alone

GPR performance is reduced in conductive clay, saturated ground, saline ground, and highly reinforced areas.
Depth penetration depends on antenna frequency, ground condition, moisture, and material conductivity.
Not all utilities are detectable, especially non-metallic or poorly contrasting targets.
GPR results should be validated with site records, test pits, excavation exposure, boreholes, or other direct verification where required.

Geophysical results are interpreted models based on measured physical property contrasts. Results should be correlated with boreholes, test pits, drilling, geological mapping, laboratory data, or other direct investigation methods where required.

Related Services

Methods and applications that work together

FAQs

Frequently Asked Questions

Can a GPR survey detect all underground utilities?

Not always. Detection depends on utility material, depth, contrast, and site condition, so critical targets should be validated with records and direct checks.

When is Ground Penetrating Radar preferred over deeper methods?

GPR is preferred for shallow targets, utility conflicts, slab scanning, and pavement assessments when high-resolution near-surface detail is required.

Can GPR be used for concrete scanning in active projects?

Yes. GPR is commonly used for concrete and slab scanning before coring, cutting, or retrofit work, subject to access and reinforcement conditions.

Do you provide 3D GPR survey workflows?

Yes, where site geometry and project objectives require grid-based imaging. Scope depends on area size, access, and required output format.

Is GPR a replacement for excavation or borehole confirmation?

No. GPR reduces uncertainty and improves targeting, but direct verification is still required where design or safety decisions depend on confirmation.

Get in touch

Need a Ground Penetrating Radar survey for your project?

Request a Proposal and share your site objective, utility concern zones, and access details so we can define a fit-for-purpose GPR scope.

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