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- Q17125159 subject Q9705429.
- Q17125159 abstract "An inverted arch 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. 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.Inverted arch foundation is very strong foundation.".
- Q17125159 wikiPageWikiLink Q105731.
- Q17125159 wikiPageWikiLink Q1076291.
- Q17125159 wikiPageWikiLink Q12277.
- Q17125159 wikiPageWikiLink Q1308978.
- Q17125159 wikiPageWikiLink Q13528059.
- Q17125159 wikiPageWikiLink Q158438.
- Q17125159 wikiPageWikiLink Q17105481.
- Q17125159 wikiPageWikiLink Q328728.
- Q17125159 wikiPageWikiLink Q5176878.
- Q17125159 wikiPageWikiLink Q77590.
- Q17125159 wikiPageWikiLink Q811177.
- Q17125159 wikiPageWikiLink Q818882.
- Q17125159 wikiPageWikiLink Q9705429.
- Q17125159 wikiPageWikiLink Q99200.
- Q17125159 comment "An inverted arch 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.".
- Q17125159 label "Inverted arch".