GDI Géoradar Détection inc.

GDi Georadar Detection Inc., founded in 1996, specializes in concrete scanning, ground-penetrating radar (GPR), and underground utility locating throughout Quebec.

We operate prior to drilling, cutting, or excavation work to accurately locate conduits, cables, reinforcement, and other buried or embedded infrastructure using non-destructive methods adapted to site conditions.

Our Services

Concrete Scanning
Detection of reinforcement, electrical conduits, post-tension cables, and other elements embedded in concrete before drilling, cutting, or coring.

Underground Utility Locating
Detection and marking of water lines, sewer systems, electrical cables, telecommunications, private utilities, and other buried infrastructure.

Pipe Inspection by Camera
Internal inspection of sanitary and storm systems to identify back-pitch, obstructions, infiltration, exfiltration, and structural deterioration.

Detection of Buried Tanks and Structures
Locating tanks, voids, foundations, and other underground elements using GPR and complementary equipment.

Methods and Technologies Used

Our work relies on a combination of technologies adapted to site conditions:

• Ground-Penetrating Radar (GPR)
• Electromagnetic Locating (EM)
• Pipe Inspection Cameras
• Tracing of Non-Conductive Pipes Using Sondes

These methods are non-destructive and allow for fast, on-site results.

Why Choose GDi Georadar Detection inc.

• Quebec-based company founded in 1996
• Recognized expertise in non-destructive methods
• Fast response across Quebec
• Specialized equipment adapted to each situation
• Clear results: on-site markings, photos, and reports
• Experience in complex site conditions

Limitations of Non-Destructive Methods (Important)

The detection methods used are non-destructive and have certain limitations.
Detection capability depends on several factors, including:

• Soil conditions
• Moisture levels
• Depth
• Materials present
• Interference

Some elements may not be detectable. When required, intrusive methods (excavation, coring) may be necessary to confirm results.

Industries Served

• Construction
• Civil and Municipal Engineering
• Engineering and Architecture
• Environmental and Geotechnical
• Industrial and Commercial

FAQ – Frequently Asked Questions

What is the maximum detection depth of GPR?
Detection depth varies depending on soil conditions and materials but is generally between 1 m and 2 m under normal conditions.

Can scanning be performed in concrete?
Yes. GPR can locate reinforcement, conduits, and cables in concrete. However, moisture or the presence of metallic fibers may reduce accuracy.

Are all underground utilities detectable?
No. Some systems, particularly non-conductive pipes or those in unfavorable conditions, may be difficult to detect. However, these can generally be located using sondes (transmitters).

Are depths accurate?
Depths are estimates based on site conditions and may vary.