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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 ...
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These other examples are composed only of diagonal flying buttresses springing from the four corners of the tower; whereas the St Giles' steeple is unique among medieval crown steeples in being composed of eight buttresses: four springing from the corners and four springing from the centre of each side of the tower. [227] [228] [229]
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
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 ...
The Chevet is the French term for the exterior of the apse, the east end of the cathedral, with its ring of radiating chapels. The chevet of Bourges is different from the other High Gothic cathedrals, since the lower aisles have different elevations, and the chevet rises upwards in three steps, with the upper walls supported by six converging ...
The Romanesque tribune disappears and the lateral thrusts that it resolves are sent to the flying buttresses, arches that transmit the thrust of the roof to the exterior buttresses, which were previously topped with pinnacles. The large stained-glass windows are a representation of Gothic interest in connecting with the people.
Even though the structure was to be taller, the buttresses were made thinner in order to pass maximum light into the cathedral. In 1284, only twelve years after completion, part of the choir vault collapsed, along with a few flying buttresses. It is now believed that the collapse was caused by resonant vibrations due to high winds. [11]