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Keywords: Puf joint toronto.jpg Foamed plastic sheet left in a control joint in a fire-resistance rated concrete floor assembly in a highrise building in Toronto Ontario Canada This is a building and fire code violation Canadian building codes do not permit the use of exposed foamed plastics Own 2007-09-10 Achim Hering Firestops Building joints Concrete blocks Home-made firestops Building code violations Exposed flammable plastics |