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An insurance adjuster speaks to a family about their damaged home a day after a tornado ripped through the south end of Barrie on Thursday afternoon. Kevin Lamb for BarrieToday. Up to 40 homes damaged by Thursday’s tornado may be condemned after many of them lost their roofs, some due to poor workmanship, an engineering professor with Western University’s The Northern Tornadoes Project believes. “With some of the roofs off, the whole roof off, we saw a lack of following the building code, said Greg Kopp, ImpactWX chair in severe storms engineering and the project’s lead researcher. There weren’t sufficient nails, in many cases there were no nails holding the roof onto the walls. And during a tornado, or any wind storm, the roof becomes like a wing and wants to lift up, so you have to hold it down, said Kopp.

Greg koppJeff lehmanWestern universityNorthern tornadoes projectBarrie mayor jeff lehmanNorthern tornado projectEnhanced fujitaEnvironment canadaகிரெக் காப்ஜெஃப் லெஹ்மன்மேற்கு பல்கலைக்கழகம்வடக்கு சூறாவளி ப்ராஜெக்ட்பாரி மேயர் ஜெஃப் லெஹ்மன்மேம்படுத்தப்பட்டது புஜிதாசூழல் கனடா