There have been many structural failures in recent history due to engineering oversight, material use, building practices and many other problems. The Harbour Cay Condominium in Cocoa Beach Florida is one example of a structural failure. The Condominium was being built in 1981, would be five stories tall, contain forty five units, and twenty eight townhouses. On March 27, 1981 the workers were placing the concrete roof slab when the top floor collapsed subsequently causing the lower floors to collapse in a chain reaction. Twenty Three workers were injured and eleven were killed. Days before the collapse, extreme deflections and spider-web cracks were noticed and brought up to the engineer, but were dismissed as he thought the design strength
