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The rise (height) of a round arch is limited to 1 ⁄ 2 of its span, [7] so it looks more "grounded" than a parabolic arch [3] or a pointed arch. [7] Whenever a higher semicircular arch was required (for example, for a narrow arch to match the height of a nearby broad one), either stilting or horseshoe shape were used, thus creating a stilted arch and horseshoe arch respectively. [8]
"Scissors" strainer arch arrangement in Wells Cathedral includes an inverted arch at the bottom of the upper opening. A strainer arch (also straining arch [1]) is an internal structural arch built to relieve the inward pressure [2] off the spanned vertical supports (providing a "buttress", thus also called buttressing arches [citation needed]), usually as an afterthought to prevent the ...
A lancet window is a tall, narrow window with a sharp lancet pointed arch at its top. [1] It acquired the "lancet" name from its resemblance to a lance. [2] Instances of this architectural element are typical of Gothic church edifices of the earliest period. Lancet windows may occur singly, or paired under a single moulding, or grouped in an ...
The Flamboyant Arch is drafted from four points, the upper part of each main arc turning upwards into a smaller arc and meeting at a sharp, flame-like point. [dubious – discuss] These arches create a rich and lively effect when used for window tracery and surface decoration. The form is structurally weak and has very rarely been used for ...
An arch is generated by the revolution of a point or a surface around a centre (or, from a mechanical standpoint it can be thought as a section of a vault); A Vault is generated by the extrusion of an arched surface; A Dome is generated by the revolution of an arched surface around an axis. [2]
A natural arch, natural bridge, or (less commonly) rock arch is a natural landform where an arch has formed with an opening underneath. Natural arches commonly form where inland cliffs , coastal cliffs , fins or stacks are subject to erosion from the sea, rivers or weathering ( subaerial processes).
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A mudbrick catenary arch A catenary curve (left) and a catenary arch, also a catenary curve (right). One points up, and one points down, but the curves are the same. A catenary arch is a type of architectural arch that follows an inverted catenary curve. The catenary curve has been employed in buildings since ancient times.