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From Wikipedia, the free encyclopedia

A wing wall is a smaller wall attached or next to a larger wall or structure.

Bridges

In a bridge, the wing walls are adjacent to the abutments and act as retaining walls. The wing walls can either be attached to the abutment or be independent of it.[1]

The soil and fill supporting the roadway and approach embankment are retained by the wing walls, which can be at a right angle to the abument or splayed at different angles. The wing walls are generally constructed at the same time and of the same materials as the abuments.[2] Scour can be a problem for wing walls and abutments both, as the water in the stream erodes the supporting soil.[3]

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Other uses

Wing walls can serve as buttresses to support walls.[4] They can also be purely decorative.[5]

References

  1. ^ "Wing Walls". David Childs Ltd.. http://www.childs-ceng.demon.co.uk/parts/wing.html. Retrieved February 1, 2009. 
  2. ^ Pierce, Phillip C.; Brungraber, Robert L.; Lichtenstein, Abba; Sabol, Scott; Morrell, J.J.; Lebow, S.T. (April 2005). ""Covered Bridge Manual: Publication No. FHWA-HRT-04-098"" (PDF). US Department of Transportation, Federal Highway Administration, Turner-Fairbank Highway Research Center. http://www.tfhrc.gov/structur/pubs/04098/04098.pdf. Retrieved February 1, 2009. 
  3. ^ Melville, Bruce; van Ballegooy, Sjoerd; Coleman, Stephen; Barkdoll, Brian. "Scour Countermeasures for Wing-Wall Abutments". Journal of Hydraulic Engineering 132 (6): 563–574. doi:10.1061/(ASCE)0733-9429(2006)132:6(563). http://cedb.asce.org/cgi/WWWdisplay.cgi?0603271. Retrieved February 1, 2009. 
  4. ^ Mahan, Dennis Hart (1873). Descriptive Geometry, as Applied to the Drawing of Fortification and Stereotomy. New York: John Wiley & Son. pp. 26–27. http://books.google.com/books?id=1hV5FPHZWOwC&pg=PA27&dq=wing+wall+buttress. Retrieved February 1, 2009. 
  5. ^ "Two wing walls make all the difference". Sunset. January 1989. http://findarticles.com/p/articles/mi_m1216/is_/ai_6925850. Retrieved February 1, 2009. 
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