ornamentidega võetakse vastu uude ajastusse. Raudbetoonsit pidi saama kahekümnenda sajandi materjal. Tsemendi tugevdamisest rauaga on andmeid aastast 1832. Joseph Monier 1867. Aastal täiustas raudbetoonist lillepotte ning 1877. Aastal raudebtoonist sambaid ja talasid. 1970. Aastatel sai raudbetoon kasutusküpseks, kui Ward ja Hyatt hakkasid analüüsima betooni ja raua eeliseid kooskasutamisel. Edasi tulid kaks sakslast, tänu kelle püüdlustele tuli lõpuks trendiga kaasa prantslane Hennebique, kes asendas raua terasega. Kaks aastat hiljem betoon tunnustati. Autor teeb kokkuvõtte, et oluline on mõista, et kahekümnenda sajandi stiil on süntees terasehituse arengust ja juugensist.
and moulded into curvilinear forms. Not being an engineer, he was not permitted to build bridges in France and so he sold his patents to German and Austrian contractors Wayss, Freitag and Schuster, who built the first generation of reinforced concrete bridges in Europe: the Monierbrau 131ft (40m) footbridge in Bremen (Germany) and the Wildegg Bridge, with a span of 121ft (37m), in Switzerland. Additional patents were granted in Belgium, France and Italy, especially to the Frenchman François Hennebique, who established the first international firm to market his bridges before World War I. His first masterpiece was built at Millesimo (Italy) in 1898, and that at Châtellérault in France (1900) remains as one of the first notable reinforced concrete arch bridges in the world, with a central span of 172ft (52m) and two lateral arches of 131ft (40m). In 1912, Hennebique set a new world record with a bridge over the Tiber in Rome (Italy) with a span of 328ft (100m)
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