File:Plan.fleche.Notre.Dame.Paris.png

...Aussi avons-nous relevé exactement ces débris de l'ancien clocher central de Notre-Dame de Paris, avant de les enlever pour y substituer la charpente nouvelle, qui, du reste, est établie d'après le système primitif.

Voici en quoi consiste ce système (10): AB,AB étant les quatre piliers du transsept et CD les faîtages des deux combles se coupant à angle droit...

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

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