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An umbrella vault, Masegra castle
An umbrella vault, Masegra castle
A masonry umbrella vault can be considered as a particularly complex type of stellar vault, or cross vault, where sails are disposed around the center of the vault resulting in an umbrella shape on the horizontal projection.
The umbrella vault of the Masegra Castle is described by a total of eight sails, with four half-cross vaults added at the corner, supported by four walls and resulting in a quadrangular horizontal plan whose side is 4 m length. Four half-cross vaults are localized at the corners.
Some in-situ investigations revealed that one of the four walls supporting the vault lacks a foundation system. As a confirmation of this, the cracks typical of vertical settlement phenomena have been observed in the wall and also in the umbrella vault
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