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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 an 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 arise ...
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.
Early Gothic architecture was the result of the emergence in the 12th century of a powerful French state centered in the Île-de-France.King Louis VI of France (1081–1137), had succeeded, after a long struggle, in bringing the barons of northern France under his control, and successfully defended his domain against attacks by the English King, Henry I of England (1100–1135).
The builders of Notre-Dame went further by introducing the flying buttress, heavy columns of support outside the walls connected by arches to the upper walls. The buttresses counterbalanced the outward thrust from the rib vaults. This allowed the builders to construct higher, thinner walls and larger windows. [34] High Gothic flying buttresses
The Gothic style first appeared in France in the mid-12th century in an Abbey, St Denis Basilica, built by Abbot Suger (1081–1151). The old Basilica was the traditional burial place of Saint Denis, and of the Kings of France, and was also a very popular pilgrimage destination, so much so that pilgrims were sometimes crushed by the crowds.
Buttress: Large stone pier holding the roof vaults in place. [3] A buttress may be visible as in the Gothic flying buttress, or it may be hidden in the complex of aisles and galleries. [2] Cathedral: The home church of a bishop, which contains the cathedra or bishop's chair. [2] The church may be of any size. [3]
The flying buttress was an essential feature of High Gothic architecture; the great height and large upper windows would have been impossible without them. Buttresses with arches apart from the walls had existed in earlier periods, but they were generally small, close to the walls, and were often hidden by the outer architecture.
Between 1220 and 1230, flying buttresses were constructed to replace the old wall buttresses, and to support the walls of upper level. Thirty-seven new windows were installed, each one six meters high, each with a double-arched window topped by a rose. (Twenty-five are still in place, twelve in the nave and thirteen in the choir.). [11]