The prestigious Mount Stephen Club was built in 1926 and was classified as a historic monument by the government of Quebec and designated as a national historic site by the government of Canada since 1975. It was then transformed and an extension was built to include a 90-room, 12-storey, five-star hotel with three banquet halls for up to 500 guests as well as all the services of a modern hotel.
The main technical challenge was to erect a modern building integrated with an existing heritage building based on wooden piles, the stability of which had to be ensured and preserved, in this area of low soil capacity. Prior to the excavation for the new hotel, which required blasting, the foundations on the west side and part of the north side of the old building were underpinned using the Berlin pile method. The installation of extensometers made it possible to measure the impact of major movements caused by the new construction on the old building. To this end, the dismantling and reassembly of the northeast corner of the heritage building became essential, including the consolidation and even the underpinning of this section’s foundations.
For this prestigious project, NCK provided all structural and civil engineering consulting services, including plans and estimates, as well as the construction supervision.
