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The exterior of the reinforced-concrete building is faced with multicolored red brick set in a Flemish-bond pattern, with a limestone base and ornamental detail. The entrance doors, of stained oak with bronze hardware, are recessed within the arch on the west elevation. A large window fills the arch above the doors. [3]
Mayan corbel arches are also sometimes called triangular due to their shape. [7] Since the sides of a triangular arch are experiencing bending stress, it is a false arch [3] in a structural sense (historically preceding the invention of true arches [8] and going back to Neolithic times [9]).
by the material used (stone, brick, concrete, steel) and construction approach. [26] For example, the wedge-shaped voussoirs of a brick arch can be made by cutting the regular bricks ("axed brick" arch) or manufactured in the wedge shape ("gauged brick" arch); [28] structurally, by the number of hinges (movable joints) between solid components ...
The most common form of the Gothic pointed arch in windows and arches was based upon an equilateral triangle, in which the three sides have an equal length (the span of the arch is equal to the arc radii). This so called equilateral arch had the great advantage of simplicity. Stone cutters, or hewers, could precisely draw the arc on the stone ...
A jack arch, and a jack arch with a relieving arch above, as illustrated in the Lexikon der gesamten Technik The Mardin jack arch, view from the crypt underneath. A jack arch is a structural element in masonry construction that provides support at openings in the masonry. Alternate names are lintel arch, [1] flat arch and straight arch.
A corbel arch is constructed by offsetting successive horizontal courses of stone (or brick) beginning at the springline of the walls (the point at which the walls break off from verticality to form an arc toward the apex at the archway's center) so that they project towards the archway's center from each supporting side, until the courses meet ...
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A common form of doorway in Italy had shaped corbels projecting inward to support a stone transom, above which rose an open arch. This form continued into the Gothic period and evolved into the fanlight The simplest window were narrow and round-topped. Windows into important rooms were often paired arched openings, divided by a colonnette or ...