Jason Reigstad is on a crusade to warn about lurking danger in more than 100 parking garages, each with an underdesigned—and non-code-complaint—precast double-T slab system.
There have been local failures but no major injuries in at least three garages that contain the prestressed double-Ts reinforced with a product called C-Grid, a grid of high-strength carbon-fiber-reinforced polymer (FRP).