The emergence of the first panels of curtainwall glazing at The One was a recent milestone that has provided one of most noticeable visual changes in the construction of the project to date, but as the building continues its potentially record breaking climb, day-to-day progress is growing more difficult to identify over the few weeks as the building reaches another milestone.

Luckily for the UrbanToronto community, our Forum contributors have continue to use their various perches and vantage points to document the Mizrahi Developments project and its growth from virtually every angle, and we are able to report that, as we enter the final days of 2022, The One stands at 18 storeys with forming in place to complete the upper floor of the first mechanical section. 

Looking southwest at The One, standing 18-storeys and counting, image by UT Forum contributor Johnny Au

The extent of the forming for the hotel component of the development was completed in late October, when the tower’s 16th floor was poured and set. After that, the construction team had to switch gears to begin the process of building the first of four 2-storey mechanical sections that appear as setback octagonal volumes every 18 storeys, housing The One’s various servicing elements. Last month, we reported that the cooling towers had been successfully installed on the 17th level, and in the span of four weeks, the machines are now completely concealed within structural concrete. 

Looking east at the complete design of The One, featuring four mechanical sections, image courtesy of Mizrahi Developments

The image below was captured on November 19th, and shows the forms for the super-columns and structural core rising a storey above the completed 17th floor. On the right side of the frame, we can see the cooling towers occupying their spot in the northern quadrant of the floor-plate, while on the western quadrant, we can see the first traces of formwork being installed for the pouring of the 18th floor. 

Concrete forms emerge above the completed 17th level, image by UT Forum contributor BloorMan

Just over a week later, the framing is now pictured covering the entire floor-plate of the 18th storey. On the southern side (left of the frame) we can see the rebar in place as well as the angled form that creates the octagonal shape of the plate. A web of electrical housings that are unique to the mechanical sections can also be seen beneath the rebar, providing power to the various mechanical components that will occupy the 18th floor. 

Forming for the 18th storey floorplate installed, image by UT Forum contributor BloorMan

Moving into early December, concrete was poured to complete the floor of the 18th level, allowing the crew to once again build up the super-columns and core. Pictured below in various states of completion, the forms assume the hash-tag, or double-cruciform shape, that close followers of The One are now quite familiar with. 

Forms rise above 18th floor to complete mechanical section, image by UT Forum contributor BloorMan

Beyond the altered dimensions of the mechanical section floor-plate, however, these levels also boast a noticeably increased amount of rebar to reinforce both the super-columns and core walls. Getting a closer look in the image below, we can see the walls in particular are thoroughly lined with horizontal lengths of rebar. 

Extra rebar is used to reinforce the structural elements of the mechanical levels, image by UT Forum contributor BloorMan

The forming then made way for concrete pouring last week, but not before the forms were thoroughly tarped to protect from the elements. With concrete pouring ongoing as of last Friday, we expect to see the forms for the 19th level emerging soon, marking the start of construction of the first residential floors of The One. 

Looking south as concrete is poured into the 18th-storey forms, image by UT Forum contributor Thaivic

UrbanToronto will continue to follow progress on this development, but in the meantime, you can learn more about it from our Database file, linked below. If you'd like, you can join in on the conversation in the associated Project Forum thread or leave a comment in the space provided on this page.

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UrbanToronto has a research service, UrbanToronto Pro, that provides comprehensive data on construction projects in the Greater Toronto Area—from proposal through to completion. We also offer Instant Reports, downloadable snapshots based on location, and a daily subscription newsletter, New Development Insider, that tracks projects from initial application.

Related Companies:  A&H Tuned Mass Dampers, Aercoustics Engineering Ltd, Bass Installation, Core Architects, Doka Canada Ltd./Ltee, Egis, Knightsbridge, Live Patrol Inc., MCW Consultants Ltd, Mizrahi Developments, Motioneering, NEEZO Studios, Rebar Enterprises Inc, RJC Engineers, RWDI Climate and Performance Engineering, Walters Group