at the beginning of 1905, milanković took up practical work and joined the firm of adolf baron pittel betonbau-unternehmung in vienna. he built dams, bridges, viaducts, aqueducts, and other structures in reinforced concrete throughout austria-hungary. the result was particularly evident in the extraordinary design of a reinforced-concrete aqueduct for a hydroelectric power plant in sebeș, transylvania, which milanković designed at the beginning of his career.