Bang completed a formal study of architecture at the Norwegian Institute of Technology in Trondheim during 1917.
In the years leading up to World War II, he also traveled extensively to learn architecture in England, Sweden, Italy, the Netherlands, Germany, and Czechoslovakia.
He also acted as a staff architect for Norsk Hydro in Rjukan, returning to his own practice in Oslo in 1930.
He later delivered a series of competition proposals together with architect Øyvin Holst Grimsgaard (1900–1989).
[3][4] [5] Bang's work included a number of residential buildings and institutional houses.