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Segmental arch

From Wikipedia, the free encyclopedia
Type of arch with a circular arc of less than 180 degrees
A segmental arch.

Asegmental arch is a type ofarch with a circular arc of less than 180 degrees.[1] It is sometimes also called ascheme arch.[2]

The segmental arch is one of the strongest arches because it is able to resistthrust.[3][clarification needed] To prevent failure, a segmental arch must have arise that is equal to at least one-eighth the width of thespan. Segmental arches with a rise that is less than one-eighth of the span width must have a permanent support or frame beneath the arch to prevent failure.[3]

The segmental arch is very old (the versions were cut in the rock in Ancient Egyptc. 2100 BC atBeni Hasan). Since then it was occasionally used inGreek temples,[4] utilized inRoman residential construction,[5]Islamic architecture, and got popular as windowpediments during theRenaissance.[4] The closed-spandrelPont-Saint-Martin bridge in theAosta Valley inItaly dates to 25 BC.[6] The first open-spandrel segmentalarch bridge is theAnji Bridge over theXiao River inHebei Province inChina, which was built in 610 AD.[7]

Segmental arches were most commonly used in the 12th-14th centuries, later practically replaced by the lowfour-centred arch.[8] Some use continued, in the 20th century mostly in residential construction over doorways, fireplaces, and windows.[3]

References

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  1. ^Harris, Cyril M. (1983).Illustrated Dictionary of Historic Architecture. New York: Dover Publications. p. 485.ISBN 9780486244440.
  2. ^Smith, Percy Major (2015).Rivington's Building Construction. Abingdon, Oxfordshire, U.K.: Routledge. p. 6.ISBN 9781317742432.
  3. ^abcKreh, Richard T. (2015).Masonry Skills. Stamford, Conn.: Cengage Learning. p. 401.ISBN 9781285426839.
  4. ^abWoodman & Bloom 2003, Segmental.
  5. ^DeLaine 1990, p. 417.
  6. ^O'Connor, Colin (1993).Roman Bridges. Cambridge, U.K.: Cambridge University Press. p. 171.ISBN 9780521393263.
  7. ^Temple, Robert K.G. (1986).China: Land of Discovery. Wellingborough, Northamptonshire, U.K.: Stephens. pp. 69–71.ISBN 9780850598582.
  8. ^Audsley & Audsley 1881, p. 24.

Sources

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  • Audsley, W.; Audsley, G.A. (1881)."Arch".Popular Dictionary of Architecture and the Allied Arts: A Work of Reference for the Architect, Builder, Sculptor, Decorative Artist, and General Student. With Numerous Illustrations from All Styles of Architecture, from the Egyptian to the Renaissance. Popular Dictionary of Architecture and the Allied Arts: A Work of Reference for the Architect, Builder, Sculptor, Decorative Artist, and General Student. G. P. Putnam's sons. pp. 24–39. Retrieved2024-12-28.
  • DeLaine, Janet (1990). "Structural experimentation: The lintel arch, corbel and tie in western Roman architecture".World Archaeology.21 (3):407–424.doi:10.1080/00438243.1990.9980116.ISSN 0043-8243.JSTOR 124838.
  • Woodman, Francis; Bloom, Jonathan M. (2003). "Arch".Oxford Art Online. Oxford University Press.doi:10.1093/gao/9781884446054.article.t003657.ISBN 978-1-884446-05-4.
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