Selected Technique:
Rapid Impact Compaction (RIC)

Project Area:
3 627 m²

As part of the construction of commercial buildings located rue des Pommiers in Pont-Rouge, Quebec Menard Canada was assigned by Ronam Construction with the task of improving two large areas to a depth of 4m identified as the findings in the geotechnical testing found them to be highly liquefiable. The quantity of the soil that would have to be improved represented an area of 3,627 m2, including a treatment overhang of 3 m.

Ground Conditions

The geotechnical data extracted from the drilling reports indicated that throughout the entire site, the following soil profile was found:

  • A layer of topsoil to a thickness of +- 0.25m
  • A deposit of sand and silt to loose to dense compactness over a thickness of +- 2-3m
  • Till of medium to dense compactness beyond

The water table was intercepted at an average depth of 1.9m compared to the level of drilling.

Menard Canada Solution

Menard Canada proposed the Rapid Impact Compaction (RIC) technique as an ideal solution. The RIC process densifies the granular soils in place to significantly increase the soils bearing capacity and eliminate the liquefaction potential. A bearing capacity of between 130 and 200 kPa was required, depending on the size of the foundations varying between 1mx1m and 3mx3m and depending on the elevation of the underside of the foundation. Modifying the compacted areas required a rapid response from the teams to quickly and efficiently adjust the treatment program throughout the process. The Cone Penetration Tests (CPT) made it possible to validate the achievement of the performance criteria established in the specifications.

Explore Other Projects