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LONDON, ONT. — EllisDon Forming Ltd. and two supervisors, Corey Jones and Matthew Thompson, were fined a total of $130,000 after two separate roof collapses, which took place in 2022 and 2023 respectively.

According to an Ontario court bulletin, the incidents took place at 3080 Bostwick Rd. and the 131 King St., both in London.

EllisDon Forming Ltd. was contracted to install CANAM Hambro D500 composite floor systems at two construction projects on two separate dates.

At the first project on July 22, 2022, Jones was overseeing work on a penthouse rooftop.

The roof had a unique layout that required a cross‑bracing detail that was not needed anywhere else on the project. This requirement was not clear to the supervisor on the design drawings, which resulted in the cross-bracing not being installed, the bulletin describes.

While the workers were pouring concrete on the final section of the roof, the system started to move and then collapsed, causing the workers to fall to the level below. No workers were injured in this incident.

At the second project on Jan. 5, 2023, Thompson was overseeing work on the upper floors of a residential apartment building.

The workers had completed the concrete walls on the 25th floor and installed the composite floor system on the 26th floor.

That morning, the supervisor and other company staff carried out a pre‑pour inspection. Once the inspection was completed, workers began pouring concrete.

After most of the floor was poured, workers began levelling and finishing it. Before workers returned to pour the remaining section, part of the composite floor system collapsed causing the workers on the 26th floor to fall to the level below. Four workers suffered minor injuries.

As a result of these incidents EllisDon Forming Ltd. failed to ensure every part of a project, including a temporary structure, was adequately braced to prevent any movement that may affect its stability or cause its failure or collapse.

Jones and Thompson failed, as supervisors, to ensure workers worked in the manner and with the protective devices, measures and procedures required by  of Ontario Regulation 213/91, contrary to  of the Occupational Health and Safety Act.

Following a guilty plea in Ontario Provincial Offences Court in London on Jan. 22, 2206, EllisDon Forming Ltd., Jones and Thompson were fined by Justice of the Peace Kristine Diaz.

It should be noted a post-incident investigation by EllisDon Forming Ltd. resulted in changes by CANAM Hambro to its D500 system and components, including further design details, which were implemented at both projects.