line of thrust
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The line of thrust is the locus of the points, through which forces pass in a retaining wall or an arch. It is the line, along which internal forces flow, [http://www.ring.shef.ac.uk/ring150_theory.pdf], [http://www.bristol.ac.uk/civilengineering/bridges/Pages/HowtoreadabridgeArches.html].
In a stone structure, the line of thrust is a theoretical line that through the structure represents the path of the resultants of the compressive forces, [http://web.mit.edu/masonry/papers/block_dejong_ochs_NNJ.pdf]. For a structure to be stable, the line of thrust must lie entirely inside the structure, [http://web.mit.edu/masonry/papers/block_dejong_ochs_NNJ.pdf], [http://www.ring.shef.ac.uk/ring150_theory.pdf].
Where important
The line of thrust is important in almost any architecture bearing weight. This includes aircraft, bridges, plus arches; see catenary arch.
An arch won't collapse, when the line of thrust is entirely internal to the arch, [http://www.wseas.us/e-library/conferences/2014/Florence/SEMOTEC/SEMOTEC-20.pdf].
See also
External links
- [http://ebooks.narotama.ac.id/files/The%20Design%20of%20Prestressed%20Concrete%20Bridges/Chapter%2017%20The%20Design%20And%20Construction%20Of%20Arches.pdf One largish article, talks about line of thrust]
- [http://www.mindat.org/glossary/line_of_thrust A definition]
- [http://encyclopedia2.thefreedictionary.com/line+of+thrust Another definition]
- [https://web.archive.org/web/20140718193850/http://scotlandsoldestbridges.co.uk/engineering-/force-lines-in-semicircular.html A second reference]
- [http://web.mit.edu/masonry/papers/block_dejong_ochs_NNJ.pdf A third reference]
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