After working in the industry sector for a couple of years and serving as director of the Preußische Höhere Maschinenbauschule in Hagen, he was appointed to professorship for elevation and transport machines at the TH Karlsruhe in 1901.
Benoit worked in the field of aerial lifts and wire rope technology.
Under his direction, the first gondola lift providing continuous operation with multiple cabins was designed and built.
This was mounted in the Black Forest on the Schauinsland mountain and inaugurated in the summer of 1930.
Die Drahtseilfrage - Beanspruchung, Lebensdauer, Bemessung von Seilen, insbesondere von Aufzugseilen und ihre experimentelle Erforschung.