Design
The two pylons, built in 1955, are both 232 metres (761 ft) high free-standing steel towers. Each pylon stands on an 8 metres (26 ft) tall cross-shaped base and is equipped with a crossbar that carried four conductors at a height of 212 metres (696 ft), and another V-shaped structure at the top which carried two additional conductors and also the ground wires. In contrast to more conventional pylon design, the corners of the pylons are arranged diagonally along the direction of the course of the line. The pylons of Messina were the model for the Elbe Crossing 1 in Germany and were, until the completion of Elbe Crossing 2, the tallest pylons of the world.
After their completion, the period of the oscillation of the structures and their maximum deflections were determined in a very unusual manner: engineers mounted three rockets with a thrust of 9800 kilonewtons on top of the pylons and ignited them.
Read more about this topic: Pylons Of Messina
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