A queen post is a tension member in a truss that can span longer openings than a king post truss. A king post uses one central supporting post, whereas the queen post truss uses two. Even though it is a tension member, rather than a compression member, they are commonly still called a post. A queen post is often confused with a queen strut, one of two compression members in roof framing which do not form a truss in the engineering sense.
The double punch truss appeared in Central Europe during the Renaissance.
Architecture
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 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
External links
References
Gopi, Satheesh. Basic civil engineering. New Delhi: Dorling Kindersley (India) Pvt. Ltd., 2010. 155. Print. ISBN 8131729885 /wiki/ISBN_(identifier) ↩
"Timber Framing for Beginners: VI. Glossary of Terms" Timber Framing Vol. 68 June 2003. 12. "Archived copy" (PDF). Archived from the original (PDF) on December 7, 2012. Retrieved December 10, 2012.{{cite web}}: CS1 maint: archived copy as title (link) https://web.archive.org/web/20121207175716/http://tfguild.businesscatalyst.com/downloads/publications/Glossary-of-Timber-Framing-Terms.pdf ↩
Lefrançois, Richard (2004). Les nouvelles frontières de l'âge. Presses de l’Université de Montréal. doi:10.4000/books.pum.18081. ISBN 978-2-7606-1963-0. 978-2-7606-1963-0 ↩
American Barns and Covered Bridges, Eric Sloane, Wilfred Funk, Inc. New York, New York; 1954, pg 96-97 ↩