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Arching above a side aisle roof, flying buttresses support the main vault of St. Mary's Church, in Lübeck, Germany.. The flying buttress (arc-boutant, arch buttress) is a specific form of buttress composed of a ramping arch that extends from the upper portion of a wall to a pier of great mass, in order to convey to the ground the lateral forces that push a wall outwards, which are forces that ...
Ramping arches in the flying buttresses of the National Cathedral. The ramping arches appeared in flying-buttress-like constructs outside the main walls for the first time c. 1100 AD (Durham Cathedral). The arches were not yet used to relief the thrust of the vault, but provided support for the roof over the triforium.
Before the buttresses, all of the weight of the roof pressed outward and down to the walls, and the abutments supporting them. With the flying buttress, the weight was carried by the ribs of the vault entirely outside the structure to a series of counter-supports, which were topped with stone pinnacles which gave them greater weight.
Flying buttress A type of buttress that transmits the thrust to a heavy abutment by means of a half-arch. Flying rib An exposed structural beam over the uppermost part of a building which is not otherwise connected to the building at its highest point. A feature of H frame constructed concrete buildings and some modern skyscrapers. Foil
They are often richly decorated with architectural and sculptural embellishments: tracery, crockets, and miniature buttresses serve to adorn the flèche. [ 8 ] The most famous flèche was the Neo-Gothic 19th-century design by Eugène Viollet-le-Duc for the Notre-Dame de Paris , 100 feet (30 meters) tall and richly decorated with sculpture.
In addition to flying and ordinary buttresses, brick and masonry buttresses that support wall corners can be classified according to their ground plan. A clasping or clamped buttress has an L-shaped ground plan surrounding the corner, an angled buttress has two buttresses meeting at the corner, a setback buttress is similar to an angled buttress but the buttresses are set back from the corner ...
In the north of France, Amiens cathedral shows the disposition of a cathedral, with its nave-arches, triforium, clerestory windows and vault, the flying buttresses which were required to carry the thrust of the vault to the outer buttresses which flanked the aisle walls, and the lofty pinnacles which surmounted them.
The cathedral's final design shows a mix of influences from the various Gothic architectural styles of the Middle Ages, identifiable in its pointed arches, flying buttresses, a variety of ceiling vaulting, stained-glass windows and carved decorations in stone, and by its three similar towers, two on the west front and one surmounting the crossing.