Application domain

Secure your land-development projects by mastering subsurface risks

The subsurface concentrates most of the risks in a land-development project: what remains invisible underfoot can, at different stages, cause major delays, inflate operating costs and force adaptations that are hard to anticipate.

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Our work

Map the subsurface of projects with very high-resolution geophysical methods, non-destructively, to deliver precise knowledge and support decision-making.

The questions

The subsurface questions that derail a project

A land-development project is rarely blocked by something visible, but by the subsurface unknown discovered too late.

Three-dimensional block of the subsurface, from topsoil to bedrock.

What remains of former occupations?

On some sites, the subsurface preserves infrastructure from past occupations and developments: buried foundations, substructures, slabs, tanks, utilities… It can also reveal archaeological remains from older occupations, or a military past with pyrotechnic risk.

Our expertise

Precisely map remains in place and produce a plan of buried anthropogenic structures.

Benefits

Anticipate site constraints
Strengthen project design
Identify obstacles before works
Avoid worksite interruptions
Reduce uncertainties and cost overruns
Better control the forecast budget

Triangulated mesh of georeferenced measurement points across a parcel.

Where should soil boreholes be placed effectively?

Spot boreholes can miss major subsurface variations: depth of natural ground, top of bedrock, geological heterogeneities, cavities, decompacted zones, permeability, erodibility, sinkholes, fill, etc.

Our expertise

Map continuously to deliver a spatialised view of the subsurface: reveal variations, highlight anomaly zones and help target investigations.

Benefits

Target boreholes
Anticipate vigilance zones
Facilitate earthworks
Reuse excavated materials
Adapt the project to subsurface constraints
Support technical choices and sizing
Secure the delivery of planned works
Better control costs

Deliverables

Results that land-development stakeholders can use directly

We deliver an interpreted subsurface map, complementary to boreholes and ready to use. We help your teams and the associated design offices read the maps, to clarify decisions and guide investigations.

Interpreted geophysical data are delivered in standard formats compatible with your GIS and CAD tools (AutoCAD, QGIS, etc.). They can also be viewed on our secure mapping platform GCServer, making it easier to cross-reference aerial photos, historical plans and field observations.

From survey to decision: a spatialised view of the subsurface

Geophysics turns a succession of spot observations into a continuous, spatialised reading of the subsurface.

It adds extra information to characterise ground constraints, target investigations, adapt the project to subsurface realities and anticipate risks that may affect design or delivery.

References