Reinventing Luxury in the Calgary Marriott Downtown

Rather than phased improvements over time, the Calgary Marriott Downtown Hotel wanted to make an immediate impact on the local market with an extensive hotel renovation. It was a good fit for PCL’s Special Projects division.

The transformation consisted of new comfort
spaces to enhance the guest experience, including
ONE18 EMPIRE, Calgary's newest dining and bar
hot spot. 

Guestrooms in the newly renovated Calgary Marriott
Downtown feature attractive multifunctional spaces
for work and relaxation.

PCL’s Specia​l Projects​ division has great deal of experience in various market sectors, meeting the specialized needs of clients with unique projects, such as the Marriott hotel revitalization.

Situated in the heart of downtown Calgary, the 41-year-old building underwent a complete renewal that saw concurrent upgrades to all 23 floors, including renovation of the lobby and 388 guestrooms, and the addition of a new VIP lounge, the M Club Lounge, the first of its kind for Marriott in Canada.

The transformation also included new comfort spaces to enhance the guest experience: a luxurious lobby where guests can work, relax, and socialize; a state-of-the-art fitness center; an expanded conference and business center; and ONE18 EMPIRE, Calgary's newest dining and bar hot spot.

A Concrete Solution

Marriott wanted to create additional guestrooms on the 23rd floor by splitting existing two-story rooms into single-story rooms. To do this, a concrete slab needed to be added between the two stories; this is rare in an existing building, and more so in an occupied building.

Typically, when pouring a suspended concrete slab, reshore posts (support posts) would be added below the upper floor being poured. The posts distribute the load between the two levels and support the formwork (temporary mold) that holds the concrete while it sets. The reshore posts rest on the existing structure below, which in this case would have been the 22nd-floor concrete slab. This was not an option because hotel guests occupied rooms on that floor.

To provide a proper engineering solution without disrupting guests, PCL designed a formwork system that the building’s existing concrete columns could support. It was composed of wooden joists, steel beams, and steel support brackets anchored to the concrete columns.

Expanded Scope, Accelerated Schedule

What started as a guestroom refresh, expected to take eight months to complete, soon expanded into the client’s vision for a full hotel renovation. And although the scope of the work increased by 40 percent, the completion date couldn’t change because the hotel was fully booked for summer events, including the world-renowned Calgary Stampede. This meant that more than a year of work needed to be compressed within the original eight-month timeline.

With a firm end date, the project team focused on re-phasing the project and ramping up recruitment. The team added 75,000 hours of labor and 100 tradespeople to get the newly expanded job done right and on time, nearly doubling the original number of workers.

PCL’s access to reliable, experienced craft personnel in the Calgary area meant the team was able to quickly mobilize skilled PCL workers to self-perform the finished carpentry, millwork installation, and other specialized finishes. Hour-by-hour task scheduling kept the project rolling at a fast pace, and the team cut completion time for each hotel floor in half, from fourteen to seven days. 

Whether they’re looking for a sophisticated place to work, unwind or socialize, Calgary Marriott Downtown guests can now enjoy one of the most attractive and innovative hotels in Calgary.

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