The project involved the construction of the extension of the Uniboard warehouse, located at 2700 Bd Jean-Jacques-Cossette in Val d’Or, Quebec. Due to the compressibility of the soils in place and in order to limit total and differential settlements, a Controlled Modulus Column (CMC) type reinforcement was designed to support the slab and the foundations of the expansion. Rated Till had indeed been successfully eliminated after the works.
Based on the geotechnical study report and laboratory tests, the general stratigraphy of the site was described below:
Topsoil and backfill: