The Brooklyn Bridge was Built with the Help of Pressurized Caissons. Several Workers were Killed or Permanently Injured Because of it.
Underground tunnels and bridge foundations below the water table are some of humanity’s most amazing civil-engineering structures. The working spaces, or caissons, are pressurized with compressed air during construction to keep out groundwater, and laborers known as sandhogs pass through pressure locks into and out of the caissons. But what are pressurized caissons? The construction […]