This project involved the construction of the Normandale Fish Culture Main Station for the Ministry of Natural Resources, located in Normandale. A geotechnical report noted that before construction, soil improvement was necessary compact loose sand layers and to mitigate liquefaction in a seismic event. As an alternative to excavation, replacement and compaction, Menard Canada proposed a ground improvement approach of rapid impact compaction (RIC) using the Menard CanadaTOR to compact the upper 3-5 meters of soil. The objectives of the treatment are to: densify the soil to minimize total and differential settlements, satisfy both building code and seismic requirements and to improve the bearing capacity of the founding soils.
The total area improved using Menard Canada’s Menard CanadaTOR, RIC solution was 4200 m2. Based on Menard Canada’s design, a 9 ton steel weight was dropped from a height of 0.9 m, up to 40 times per minute, under the raft slab area and all footing locations, including a three meter offset from the outside edge of the footings. The RIC program was completed on schedule, with all tests achieving the intended results. Menard Canada delivered a fast, cost effective solution of soil improvement providing a stable foundation for the project.