# Box truss

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[[Image:RRTrussBridgeEndView.jpg|thumb|right|250px|A box truss structure in a bridge of the [Southern Pacific Railroad](/source/Southern_Pacific_Railroad) in [California](/source/California)]]
A '''box truss''' is a structure composed of three or more ''chords'' connected by transverse and/or diagonal structural elements.<ref >{{cite journal | last=Nie | first=Jian-Guo | last2=Zhu | first2=Li | title=Beam-Truss Model of Steel-Concrete Composite Box-Girder Bridges | journal=Journal of Bridge Engineering | volume=19 | issue=7 | date=2014 | issn=1084-0702 | doi=10.1061/(ASCE)BE.1943-5592.0000592 | page=}}</ref>

==Application==
Box trusses are commonly used in certain types of [aircraft](/source/aircraft) [fuselage](/source/fuselage)s, electric power pylons, large [radio](/source/radio) [antennas](/source/antenna_(radio)), and many [bridge](/source/bridge) structures. (For various truss arrangements used see [truss bridge](/source/truss_bridge).)

By using what are in effect stiff panels in a cylindrical arrangement the resulting structure can have a high resistance to axial torsion (twisting along its long axis) and a higher resistance to buckling in its highly loaded sides.

When finished as an open structure the truss will be less subject to wind drag and to aeroelastic effects than would a completely enclosed structure.

==References==
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Category:Structural system

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Adapted from the Wikipedia article [Box truss](https://en.wikipedia.org/wiki/Box_truss) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Box_truss?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.