Timeline

Heritage classified

Key figures

Origin and history

The agricultural hangar of Grand'Maisons, located in Villepreux, Île-de-France, was erected in 1953 to meet the agricultural needs of the time. Its design is directly inspired by aviation hangars, with a bold structure based on a self-supporting reinforced concrete slab. This system, patented in 1946 by Belgian entrepreneur Alfred Hardy, is based on a thin veil of concrete laid on a single central support, a remarkable technical innovation for the time.

This monument illustrates the adaptation of industrial construction techniques to the agricultural sector, a major phenomenon of the twentieth century. The self-supporting slab, already experienced in the 1930s, bears witness to extensive architectural research and a desire to modernize rural infrastructure. Its inscription as a Historic Monument in 2010 underlines its heritage importance, both for its technical originality and for its role in the history of functional architecture.

The location of the hangar, on the way to Grand'Maisons in Villepreux, and its current private property make it a rare vestige of this period of transition between agricultural tradition and industrialization. The technique used, combining structural lightness and resistance, attracted the attention of 20th century heritage specialists, justifying its protection and in-depth study. The building thus embodies a synthesis between technical innovation and rural heritage, characteristic of the Yvelines and the Ile-de-France post-Second World War.

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