Drummondville grew fast along the Saint-François River, turning old agricultural land into neighborhoods and industrial parks. That clay-rich floodplain soil behaves very differently than the till found on higher ground. A proper soil mechanics study tells you exactly what is under the slab before you pour concrete. We have seen projects where skipping this step led to cracking foundations within two years. Before drilling test pits, we always run a MASW survey to map the vs30/" data-interlink="1">shear wave velocity profile across the site. That gives us a clear picture of where the bearing layers start.
A soil mechanics study catches those weak zones before the foundation cracks. The river terraces hide soft clay lenses that settle unevenly under load.