File:Charpente.eglise.Saint.Jean.Chalons.sur.Marne.png

...Cependant les charpentiers des XIII^e et XIV^e siècles élevaient des charpentes apparentes encore plus simples que celles données ci-dessus, pour couvrir des vaisseaux d'une largeur de 7^m,00 à 8^m,00. Il en existe une encore au-dessus de la nef de la petite église de Saint-Jean de Châlons-sur-Marne, qui se recommande par son extrême légèreté. Nons donnons (25) une des fermes-maîtresses de cette charpente, en A et en B un des chevrons...

This image comes from Dictionary of French Architecture from 11th to 16th Century (1856) by Eugène Viollet-le-Duc (1814-1879).

	This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 100 years or fewer. This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.
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