Pier Luigi Nervi (June 21, 1891 – January 9, 1979) was an Italian engineer. He studied at the University of Bologna and qualified in 1913. Dr. Nervi taught as a professor of engineering at Rome University from 1946-61. He is widely known as a structural engineer and an architect, and for his innovative use of reinforced concrete.
Attached is the pic from on his structures. Roof of multipurpose hall,material is RCC.