Two separate failures of three cantilevered flanges of three precast, prestressed-concrete double-T parking-deck sections—reinforced with a non-code-compliant, high-strength carbon-fiber-reinforced polymer grid—are putting the spotlight on the structural safety of corrosion-resistant FRP grids for transverse reinforcement of double-Ts.
A union representing government engineers in Ontario is taking aim at a pair of newly released reports on the deck problem that temporarily closed the newly opened Nipigon River Bridge last winter, severing a major highway link between eastern and western Canada.