The project consisted of the development of a five-storey Fairfield Hotel in Orillia, Ontario. The building is to be constructed using shallow spread footings and slab-on-grade, and includes a lowered pool area.
The soil conditions in the project area consist of a compressible silty layer to depths of 8 to 10 m overlying a dense till stratum. The silt layer was determined to be unsuitable for the support of the footing loads without substantial settlement.
Controlled Modulus Columns (CMC) were determined to be an ideal solution for the site’s challenging soil conditions. The CMCs were installed through the compressible silt layer and anchored into the glacial till below. Work was carried out late in the season, so winter work presented its challenges. Menard was able to complete the CMC work in temperatures as low as -10°C in order to meet the client’s schedule. Over 250 CMCs were installed beneath the footings and sections of slab-on-grade to depths of up to 10 metres. Capacities of the CMCs were verified by means of full-scale static load testing