OTTAWA
QUEBEC
MONTREAL
TORONTO
Project Date
April 2020 – August 2022
PROJECT CATEGORY
Commercial / Residential
Client Name
94 Cumberland Street
Toronto, Ontario
94 Cumberland
Street
Project Services
Demolition
Safe and Efficient Decommissioning of 94 Cumberland Street
Project Overview
Delsan-AIM was contracted by The Minto Group to decommission and demolish a nine-storey commercial office building in the heart of Yorkville, Toronto. Constructed in the late 1960s, the building featured a reinforced concrete structure with a footprint of 10,530 ft², a mechanical penthouse, and a two-level basement. Its façade comprised precast panels and glazing.
The project's urban location posed significant challenges, including close proximity to streets, sidewalks, and neighboring structures, necessitating innovative approaches to ensure safety and minimize disruption.
Delsan-AIM was contracted by The Minto Group to decommission and demolish a nine-storey commercial office building in the heart of Yorkville, Toronto. Constructed in the late 1960s, the building featured a reinforced concrete structure with a footprint of 10,530 ft², a mechanical penthouse, and a two-level basement. Its façade comprised precast panels and glazing.
The project's urban location posed significant challenges, including close proximity to streets, sidewalks, and neighboring structures, necessitating innovative approaches to ensure safety and minimize disruption.
| Demolition Strategy and Execution Hazardous Material Abatement and Interior Removal Delsan-AIM began by safely removing hazardous materials, such as asbestos, followed by the systematic removal of interior finishes, mechanical systems, and electrical equipment using mini-excavators and skid-steer loaders. Creation of Structural Shaft and Crane Installation To facilitate demolition, a shaft was cut through the structural slabs from the roof to the basement. This process included:
Level-by-Level Demolition Using small demolition equipment, the building was taken down incrementally, floor by floor. Concrete slabs were demolished systematically, and the tower crane removed heavier components. Mast-climber platforms were installed around the building’s perimeter to provide worker access, contain debris, and minimize dust. Ground-Level and Substructure Demolition Once the structure was lowered to a safe elevation, full-sized excavators equipped with attachments such as concrete shears, hydraulic hammers, and a 75-ft high-reach boom completed the remaining demolition work. The building’s foundation was removed in a staged sequence and backfilled with shale per engineered specifications to protect adjacent structures. Critical Foundation Wall and Utility Vault Work Approximately 140 ft. of a foundation wall adjacent to an occupied building and an underground utility vault required a precise approach to maintain structural stability. This included:
Project Outcome Delsan-AIM successfully decommissioned and demolished the structure within the constraints of a dense urban environment, maintaining the highest safety standards. Through detailed planning and innovative methods, the project was executed efficiently, ensuring the integrity of adjacent structures and infrastructures while preparing the site for future development. |
