Selected Technique:
Vibro Compaction + Dynamic Compaction + Dynamic Replacement


Treatment Area:
1,6944m


Maximum Depth:
Dynamic Compaction 10m
Vibrocompaction 20m
Dynamic Replacement 20m


Service from Menard Canada was requested by Sullivan & Son to improve the ground under the future Canadian Armed Forces building located near Chemin de l’Aéroport, Bagotville, Quebec. The treatment area is 16,944 m2, including an overhang of 10m.

Ground Improvement was conducted, in Bagotville, Quebec

Ground Conditions

Based on Englobe’s geotechnical investigation and the soil profile was as follows:

  • Profile 1 – Sand, trace of silt over a thickness of more than 20m
  • Profile 2 – Sand, trace of silt and clear transition on clayey silt
  • Profile 3 – Sand, trace of silt followed by a transitional layer of clayey silt and sand

Menard Canada Solution

Menard Canada combined several ground improvement techniques to optimize costs and efficiencies. The ground improvement work consisted of carrying out Vibro-Compacting or Vibro-Replacement works between elevations 131.00m and 141.00m. Lastly, utilizing Dynamic Compaction (for the first 10m between elevations 141.00m and 151.00m).

The performance criteria can be summarized as follows:

  • Densification of the sand to achieve a qc1n, cs criterion of 130;
  • Maximum processing depth of 20m under the foundations;
  • Total settlements of 25mm;
  • Maximum differential settlements of 20mm.

The objectives in terms of bearing capacity at the ELS and ELU were 250 kPa (ELS) and 1050 kPa (ELU) respectively, which were successfully met.

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