Millau Viaduct slightest movement in the Viaduct, and measure its resistance to wear-and-tear over time. Anemometers, accelerometers, inclinometers, temperature sensors are all used for the instrumentation network. Twelve fibre optic extensometers were installed in the base of pylon P2. Being the tallest of all, it is therefore under the most intense stress. These sensors detect movements on the order of a micrometre. Other extensometers, electrical this time, are distributed on top of P2 and P7. This apparatus is capable of taking up to 100 readings per second. In high winds, they continuously monitor the reactions of the Viaduct to extreme conditions. Accelerometers
Richard de Millau the investiture quarrel between the papacy and the Emperor of the Holy Roman Empire between 1075 and 1122. Much of which revolved around the Provençal lands in the Kingdom of Burgundy, attached to the Holy Roman Empire. Born about 1052AD into an extremely powerful house at the time. His family were of viscounts of Millau, and their actions involved the continuity of power strategies between the various aristocratic families of France. He was the fourth child of Richard II (? - 1051), Vicount de Millau (1023) and his wife Gévaudan. His brother Bernat had been abbott of abbé de Saint-Victor