Claim: Franz Dischinger was a German civil and structural engineer and pioneered the use of prestressed concrete in 1934; then, in 1928, he went back to school to receive his doctorate and the Technical School in Dresden, Germany.
Evidence: Franz Dischinger (8 October 1887 - 9 January 1953) was a pioneering German civil and structural engineer, responsible for the development of the modern cable-stayed bridge. He was also a pioneer of the use of prestressed concrete, patenting the technique of external prestressing (where the prestressing bars or tendons are not encased in the concrete) in 1934. In 1928 Dischinger went back to school to receive his doctorate at the Technical School in Dresden, Germany.