About: Inverted arch

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An inverted arch or invert is a civil engineering structure in the form of an inverted arch, inverted in comparison to the usual arch bridge. Like the flying arch, the inverted arch is not used to support a load, as for a bridge, but rather to resist sideways, inwards loads. The conventional arch supports a vertical load downwards on the centre of the arch and translates this into forces both downwards and outwards at the base of the arch. In most cases, this sideways force is a nuisance and must be resisted by either strong foundations or a further 'bowstring' girder, in the form of a tied-arch bridge.

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rdf:type	yago:WikicatArchesAndVaults yago:Abstraction100002137 yago:Arch113886133 yago:Attribute100024264 yago:Curve113867641 yago:Line113863771 building yago:Shape100027807
rdfs:label	Inverted arch (en)
rdfs:comment	An inverted arch or invert is a civil engineering structure in the form of an inverted arch, inverted in comparison to the usual arch bridge. Like the flying arch, the inverted arch is not used to support a load, as for a bridge, but rather to resist sideways, inwards loads. The conventional arch supports a vertical load downwards on the centre of the arch and translates this into forces both downwards and outwards at the base of the arch. In most cases, this sideways force is a nuisance and must be resisted by either strong foundations or a further 'bowstring' girder, in the form of a tied-arch bridge. (en)
dcterms:subject	Arches and vaults
Wikipage page ID	39044131 (xsd:integer)
Wikipage revision ID	1068203467 (xsd:integer)
Link from a Wikipage to another Wikipage	Robert Stephenson Arch Arch bridge Railway cutting Hownes Gill Viaduct Graving dock Flying arch Counter-arch The Iron Bridge Arches and vaults Civil engineering Newbold-on-Avon Canal tunnel Lock (water transport) Tied-arch bridge Retaining wall
sameAs	Inverted arch Inverted arch Inverted arch Inverted arch
dbp:wikiPageUsesTemplate	dbt:Architecturalelement-stub dbt:Reflist
has abstract	An inverted arch or invert is a civil engineering structure in the form of an inverted arch, inverted in comparison to the usual arch bridge. Like the flying arch, the inverted arch is not used to support a load, as for a bridge, but rather to resist sideways, inwards loads. The conventional arch supports a vertical load downwards on the centre of the arch and translates this into forces both downwards and outwards at the base of the arch. In most cases, this sideways force is a nuisance and must be resisted by either strong foundations or a further 'bowstring' girder, in the form of a tied-arch bridge. Inverted arches are used where sideways forces must be restrained, and where space is most easily available beneath a construction. They have often been applied to railway cuttings, but are perhaps most distinctively used as the base of docks, particularly dry docks and locks that must be supported even when they are empty of water that could otherwise resist the sidethrust of their walls. Some canal tunnels were built oval in section, such as the Newbold-on-Avon tunnel, where the lower section forms an invert for strength. A further use of inverted arches is to support lengthways forces from another arch, such as a bridge or viaduct. This is often done on poor ground, to reduce the ground loading otherwise and thus the need for extensive foundations. In the simplest case, the arches simply spread the downwards loads of viaduct piers into a wider ground area, exactly as for an inverted arch bridge. Such arches were used beneath the Hownes Gill Viaduct, on the advice of Robert Stephenson. Inverted arches have also been added to existing bridges, to reinforce them after their banks start to slide inwards. Such a repair was applied to The Iron Bridge in the 1970s. Inverted arches are often used in conjunction with retaining walls. The arch provides a foundation for the walls and can resist the sideways forces upon them. The retaining wall also provides the vertical load needed by the arch. (en)
gold:hypernym	Structure
prov:wasDerivedFrom	wikipedia-en:Inverted_arch?oldid=1068203467&ns=0
page length (characters) of wiki page	2522 (xsd:nonNegativeInteger)
foaf:isPrimaryTopicOf	wikipedia-en:Inverted_arch
is Link from a Wikipage to another Wikipage of	Daxue Road Index of architecture articles Florence Cathedral Flying arch Counter-arch The Iron Bridge City Canal Hownsgill Viaduct Sheerness Dockyard Inflected arch
is Wikipage redirect of	Inflected arch
is foaf:primaryTopic of	wikipedia-en:Inverted_arch

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