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The vault at Saint-Séverin Church, Paris. A vault is an arched form used to provide a space with a ceiling or roof. The parts of a vault exert lateral thrust that requires a counter resistance, provided by the ground in underground vaults or by (for example) thicker walls or buttresses for above-ground vaults. The simplest kind of vault is the barrel vault, which is generally semicircular in shape. Photograph: Roman Bonnefoy Recently featured:
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from Wikipedia picture of the day feed http://ift.tt/2of2Jtl
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