A look at the roof collapse at Algo Centre Mall in Elliot Lake including the vigil Sunday evening. (QMI Agency/Elliot Lake Standard/SHANNON QUESNEL)
ELLIOT LAKE, ONT. - The trigger of the Algo Centre Mall collapse was readily apparent with corrosion of a steel beam being the cause, a forensic investigation has revealed.
It appears the real mystery is how the mall was able to avoid a fatal failure sooner than when the rooftop parking lot collapsed on June 23, 2012.
NORR, a global engineering firm that conducted a forensic investigation into the mall collapse for the Ontario Provincial Police, released its 700-page report to Elliot Lake Inquiry commission counsel last week.
On Tuesday, 140 pages of the NORR report about the unparalleled mall situation were made public.
“One is hard-pressed to find a similar example where a carbon-steel framed building in North America or Europe continued to corrode to the point of failure, when no extreme loading is present,” the report states.