Ceretti was born in Bologna, and graduated from the Politecnico di Milano in 1890, after studying at the Polytechnic Institute of Zurich in 1889. In 1894 he and his colleague, the engineer Vincenzo Tanfani, founded Ceretti & Tanfani. In the same year, the company installed a small aerial cableway at the United Expositions Fair in Milan; this cableway had only one antecedent, built in the United States of America the previous year. In 1912, he built a cableway at Lana-San Vigilio, Merano; 2,2 km. long and 1153 metres high, it was the first example with intermediate supports running over rugged ground capable of carrying passengers. Ceretti's intermediate support system was quickly developed in other European and non-European countries, where it became a standard construction. Following, Ceretti received many awards for this development. While continuing to work on cableways, Ceretti studied the inefficiencies of cargo-handling at harbours and docks. He developed new mechanical methods for moving cargos around, and in 1903 he designed technologies to lift weights, chutes and cableways for the Savona harbour, to load off coal on railway trucks. During World War I he collaborated with the Italian Army. His expertise was helpful to the transportation of troops, ammunitions and supplies to the Alpinefront line by aerial cable. Ceretti's expertise and contribution led him to become director of the Technical Department of the Italian Air Force, in Turin. Thanks to his company Ceretti developed the Bovisa district in Milan, to provide accommodation for the families of his employees, and offered them soft loans through the Lombard Province Savings Bank, the Cassa di Risparmio delle Province Lombarde, of which he became vice-president. Ceretti continued his work until his death in Milan in 1934, with Ceretti & Tanfani becoming one of the world's leading companies in the field of mechanical transport. Part of his legacy was the expansion of aerial cableways to the most inaccessible parts of the Alps.
Awards
1914: the Lombard Institute of Literature, Sciences and Arts awarded Ceretti the Brambilla prize in recognition of his creation and development of new Italian industry.
1919, he was appointed :it:Grande Ufficiale|Senior Official and :it:Cavaliere di Gran Croce|‘Knight of the Grand Cross’, decorated with the cross of St. Lazarus, and appointed as :it:Cavaliere del Lavoro|‘Knight of Labour’.
Published works
Giulio Ceretti, Aerial Cableways, London, E.&F.N. Spon LTD, New York, Spon & Chamberlain, 1927
Giulio Ceretti & Giuseppe Pini, Mezzi e vie di trasporto, Pisa, Arti Grafiche Pacini Mariotti, 1931
Giulio Ceretti, Cinque anni di fascismo alla Cassa di Risaprmio delle Provincie Lombarde, Milano, Cariplo, 1927