ABSTRACT
The construction of the vaults in stone masonry in Notre-Dame in Paris, which are an essential feature in the cathedral’s architecture, was a challenging task for the medieval builders, and certainly can be seen as a milestone in technical and artistic innovation. Not only the ribs, but also the shells are made of dressed stone: their double-curved surfaces are built in exposed masonry with a remarkably regular texture. During the devastating fire, the vaulted ceiling stood for good part to its task in confining the flames to the roof structure. Even though some portions were destroyed by heavy impact, it nevertheless played a key role in avoiding major damage to the interior of the cathedral. This study aims to clarify the historic position of this construction and to understand the builders’ technical knowledge. We also hope to contribute valid information for repairing the damaged vaults and integrating the destroyed portions.
