New video footage of investigators working at the condominium building that collapsed in Florida in June, killing 98, shows structural issues, according to experts. The footage was released by the National Institute of Standards and Technology (NIST) as the federal agency announced it would launch a technical probe into the collapse of the building, which is located in Surfside. Images from the video show steel-reinforced concrete sections of the building and an area where a column meets the structure’s foundation. “The corrosion on the bottom of that column is astronomical,” Dawn Lehman, professor of structural engineering at the University of Washington, told the Miami Herald. “If there’s that amount of corrosion, this should have been fixed,” she added. Lehman and another expert, Abieyuwa Aghayere, a Drexel University engineering researcher, also said there appeared to be too much steel reinforcement, which could weaken the structural integrity of the building. Aghayere also identified …