The Service
Geotechnical Support
from First Dig to Handover
From preliminary ground investigation programs through to full construction-phase earthworks monitoring, PGI Geotechnical Group provides complete geotechnical support to civil contractors, land developers and infrastructure project managers across North Queensland. Whether you need to understand what's below ground before committing to a development, or you need real-time monitoring and testing to verify your contractor's earthworks are being placed correctly — PGI has the field capability and technical expertise to support you throughout the project lifecycle.
Our ground investigation services encompass borehole drilling, test pit excavation, Dynamic Cone Penetrometer (DCP) surveys and targeted geophysical investigations — all designed to map subsurface conditions efficiently and cost-effectively. We deliver the soil layering profiles, rock depth data, groundwater levels and material property data needed to develop accurate earthworks specifications and manage construction risk before it becomes a change order.
During construction, PGI's field technicians provide compaction monitoring and materials testing that verifies fill placement meets project specification under AS 3798. Our rapid testing turnaround keeps earthworks programs moving — providing project owners and contractors with the documented quality assurance records needed to protect against future liability for premature settlement or earthworks instability.
Key Deliverables
- Borehole drilling & supervision
- DCP survey programs
- Earthworks specification development
- Compaction monitoring & testing
- Fill material assessment
- Settlement & stability assessment
- Cut/fill design parameters
- Construction materials testing
When You Need It
Ground Investigation That
Drives Better Earthworks
Subdivision & Greenfield Development
You're developing a greenfield subdivision or industrial estate and need ground investigation to map subsurface conditions, identify cut/fill constraints and develop earthworks specifications before your civil contractor prices the bulk earthworks.
Road & Infrastructure Earthworks
Your civil contractor is constructing roads, drainage channels or infrastructure earthworks and needs ongoing compaction monitoring and materials testing to document that fill placement meets specification throughout construction.
Preliminary Site Assessment
You've acquired a site for development and need a cost-effective preliminary ground investigation to understand subsurface conditions, identify potential construction risks and inform the feasibility of your development concept before committing to detailed design.