Date:2013-05-31 15:20
cts of saltwater, the BART tube includes a series of anode that are connected by cables along the top of the structure. The electrical charge of the anodes helps convert the steel shell of the tube into a protective layer that doesnt react negatively to the saltwater, preventing corrosion from eating into the structure.
However, the 30 anodes on the tube jut out nakedly into the water, and the devices are occasionally bashed by a waylaid anchor from one of the innumerable shipping tankers that a