Skip links

ST. MICHAEL'S HOSPITAL

Dating back to the 19th century, St Michael’s Hospital has undergone massive renovation over the decades. In 2016, PDI was contracted to perform the demolition of a 17 storey stairwell located between the old building and what was to become the new Peter Gilgan Patient Care Tower. PDI won the World Demolition Awards for Contract of the Year Under US$1 Million for this project.

Operating in tight quarters in the heart of downtown Toronto is no problem for our PDI team. With experienced operators and the right equipment, this job was a great success. The St. Michael’s Hospital selective demolition was a challenging job due to the nature of the reinforced concrete stairwell; everything had to be engineered and calculated to be lifted out by an onsite tower crane.

The first step was to remove the cladding in order to reveal the structure. Once the swing stage work was completed, structural demolition began with removal of the roof slab, using a Brokk 100 robotic excavator. Each slab lifted by the crane had to be cleared of extraneous debris so that nothing would come loose during transport.

The challenge with demolishing a stair tower is that nothing is level, so our engineering team designed and fabricated a self-levelling platform to work from as they cleared wall blocks, one at a time, by hand. This platform was installed and moved down through the floors as demolition progressed, helping us make short work of the removal.

stm lr6

PROJECT HIGHLIGHTS

The project was valued at $400,000

PDI recycled 95% of the waste generated from this demolition site

This project commenced in December 2016

PDI IN ACTION

noun comment 106852

It’s a fully operating hospital. St. Michael’s is a trauma centre, one of the three trauma centres in Toronto so there are helicopters landing and every level of this hospital has patients in it. The vibrations transfer through concrete like it does every other building and we had to really minimize that. We can’t be disrupting any of the operations inside the hospital.

RELATED PROJECTS

RETURN TO ALL PROJECTS

FEATURED VIDEOS

Watch Priestly Demolition do the unthinkable—and take down the entire Gardiner Expressway Eastbound Ramp in just 5 weekends. This is a fresh new look at the masters of bridge demolition. See drone footage, time-lapse video, and project highlights of this rapid demo from the PDI team, plus a behind the scenes look at how this project plan comes together, and the people who make it happen.

Demolition of the Trafalgar Road and 401 Overpass Bridge

This Rapid Bridge Demolition is different from what you’ve seen before. Watch as PDI crews demolish the structure from both the top and bottom simultaneously. Featuring interviews with our crew.

The Kobelco 1600, A Gamechanger for PDI

This heavily modified, Kobelco 1600, 200T beast will allow us to take down higher buildings than ever before.

Victor Mine, Ontario’s First and Only Open Pit Diamond Mine

Must see demolition of the Victor Mine, where calling in for backup isn't an option. Priestly Demolition flies in additional heavy equipment by Hercules aircrafts, to complete the project in this remote location near James Bay in Northern Ontario.

Underwater Demolition of the Glen Miller Dam 3

Priestly Demolition dives into the murky waters of the Trent Severn Waterway—hammering and removing concrete 16 feet below the surface. This underwater demolition provides a whole new set of challenges, but that's nothing new for PDI and the bigger the challenge, the more excited we get. Watch now to see how it's done.

Must See—New Kind of Demolition for Priestly Demolition

Demolition isn't always about smashing buildings to the ground. See how Priestly Demolition is taking the opposite approach for this project.