Floodwater Pressure Blows Out Concrete Form Wall, Knocking Worker From Ladder in Construction Collapse Cincinnati, OH — A sudden buildup of floodwater behind a concrete form wall caused a dramatic blowout at a downtown construction site Thursday morning, sending panels crashing inward and knocking a worker off a ladder. Amazingly, no injuries were reported despite the force of the collapse and the number of workers in the pit below. The video begins with crews working inside a deep excavation as