File:Fermeture.triangle.voute.gothique.3.png

...Or, parce que ces rangs s'allongent, il faudrait faire tailler une cerce pour chacun d'eux, ce qui serait long et dispendieux. Il faut alors avoir deux cerces, disposées ainsi que l'indique la fig. 58, étant ensemble plus longues que la ligne de clef des remplissages, et l'une des deux pas plus longue que le rang de claveaux, trop incliné pour pouvoir être bandé sans le secours d'un soutien....

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.
This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights.

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