# Queen post

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Truss bridge structure

Queen Post Interior structure of a covered bridge that uses a queen-post structure Span range short to medium Material wood planks Movable No Design effort medium Falsework required Sometimes

A **queen post** is a [tension](/source/Tension_(physics)) member in a [truss](/source/Truss) that can span longer openings than a [king post](/source/King_post) truss. A king post uses one central supporting post, whereas the queen post truss uses two.[1] Even though it is a tension member, rather than a compression member, they are commonly still called a [post](/source/Post_(structural)). A queen post is often confused with a queen strut, one of two [compression](/source/Compression_(physical)) members in roof [framing](/source/Framing_(construction)) which do not form a truss in the engineering sense.[2]

The double punch truss appeared in Central Europe during the [Renaissance](/source/Renaissance).[3]

## Architecture

The queen posts are the second and third (from left) vertical posts visible in the photo, visibly thicker than the other posts.

A queen-post bridge has two uprights, placed about one-third of the way from each end of the truss. They are connected across the top by a [beam](/source/Beam_(structure)) and use a diagonal brace between the outer edges. The central square between the two verticals is either unbraced (on shorter spans), or has one or two diagonal braces for rigidity. A single diagonal reaches between opposite corners; two diagonal braces may either reach from the bottom of each upright post to the center of the upper beam, or form a corner-to-corner "X" inside the square.[4]

## See also

- [Timber roof trusses](/source/Timber_roof_trusses)

- [Timber framing](/source/Timber_framing)

## References

1. **[^](#cite_ref-1)** Gopi, Satheesh. Basic civil engineering. New Delhi: Dorling Kindersley (India) Pvt. Ltd., 2010. 155. Print. [ISBN](/source/ISBN_(identifier)) [8131729885](https://en.wikipedia.org/wiki/Special:BookSources/8131729885)

1. **[^](#cite_ref-2)** "Timber Framing for Beginners: VI. Glossary of Terms" *Timber Framing* Vol. 68 June 2003. 12. ["Archived copy"](https://web.archive.org/web/20121207175716/http://tfguild.businesscatalyst.com/downloads/publications/Glossary-of-Timber-Framing-Terms.pdf) (PDF). Archived from [the original](http://tfguild.businesscatalyst.com/downloads/publications/Glossary-of-Timber-Framing-Terms.pdf) (PDF) on December 7, 2012. Retrieved December 10, 2012.{{[cite web](https://en.wikipedia.org/wiki/Template:Cite_web)}}: CS1 maint: archived copy as title ([link](https://en.wikipedia.org/wiki/Category:CS1_maint:_archived_copy_as_title))

1. **[^](#cite_ref-3)** Lefrançois, Richard (2004). [*Les nouvelles frontières de l'âge*](https://dx.doi.org/10.4000/books.pum.18081). Presses de l’Université de Montréal. [doi](/source/Doi_(identifier)):[10.4000/books.pum.18081](https://doi.org/10.4000%2Fbooks.pum.18081). [ISBN](/source/ISBN_(identifier)) [978-2-7606-1963-0](https://en.wikipedia.org/wiki/Special:BookSources/978-2-7606-1963-0).

1. **[^](#cite_ref-4)** American Barns and Covered Bridges, Eric Sloane, Wilfred Funk, Inc. New York, New York; 1954, pg 96-97

## External links

- [Bridge Basics](https://pghbridges.com/basics.htm)

- [Queen post](https://web.archive.org/web/20080320002055/http://www4.bfn.org/bah/a/DCTNRY/q/queen.html)

- [King Post Truss vs Queen Post Truss](https://www.youtube.com/watch?v=L2iXgby0Ffg) via [YouTube](/source/YouTube)

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