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Pointed arches form the rib vaults of Worcester Cathedral (1084–1504) A pointed arch, ogival arch, or Gothic arch is an arch with a pointed crown meet at an angle at the top of the arch. [1] Also known as a two-centred arch, its form is derived from the intersection of two circles. [2]
The pointed arch rib was built without mortar between the voussoirs. [2] On its eastern, downstream side a nearly intact Christian inscription in Greek runs along most of its length, citing almost verbatim Psalm 121, verse 8 of the Bible. [6]
Pointed arch bridge: The earliest known bridge resting on a pointed arch is the 5th or 6th century AD Karamagara Bridge in Cappadocia. Its single arch of 17 m spanned an affluent of the Euphrates. A Greek inscription, citing from the Bible, runs along one side of its arch rib.
These arches can already be observed in various monuments of ancient Egypt. In Nubia, one of the pyramids of Meroë contains a true semi-circular arch constructed with regularly arranged voussoirs. [D 4] At Gebel Barkal, two porticoes leading to pyramids are covered, one by a pointed arch and the other by a semi-circular arch. Both are ...
If one impost is much higher than another, the arch (frequently pointed) is known as ramping arch, raking arch, [90] or rampant arch (from French: arc rampant). [91] Originally used to support inclined structures, like stairs, in the 13th-14th centuries they appeared as parts of flying buttresses used to counteract the thrust of Gothic ribbed ...
The defining characteristic of the Gothic style is the pointed arch, which was widely used in both structure and decoration. The pointed arch did not originate in Gothic architecture; they had been employed for centuries in the Near East in pre-Islamic as well as Islamic architecture for arches, arcades, and ribbed vaults. [56]
Horseshoe arch. The horseshoe arch (Arabic: قوس حدوة الحصان; Spanish: arco de herradura), also called the Moorish arch and the keyhole arch, is a type of arch in which the circular curve is continued below the horizontal line of its diameter, so that the opening at the bottom of the arch is narrower than the arch's full span.
The Arch was measured by Wilson, who noted that its crown reaches a height of 22.17 metres (72 ft 9 in) above bedrock, [10] and Bahat writes that the Herodian street which ran along the western wall is about 6.1 metres (20 ft) above bedrock at the site. [3] Wilson also noted the Arch's span being of 13 metres (42 ft). [10]