Benoit was born in Wesel in 1868. He was raised in a Huguenot family. He studiedmechanical engineering at the TH Charlottenburg. 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. This professorship was newly established at that time. He retired in 1935. While being a professor in Karlsruhe, he was appointed to president in 1911/12 as well as in 1921/22. He died in Baden-Baden in 1953.
G. Benoit, R. Woernle. ''Die Drahtseilfrage - Beanspruchung, Lebensdauer, Bemessung von Seilen, insbesondere von Aufzugseilen und ihre experimentelle Erforschung.''