Category Archives: Arch structures

Bellows Falls Bridge

Posted on 12/05/2011 by dougaj4

Sparked by this excellent high resolution photo from the Shorpy collection, posted at Eng-Tips, and a comment that it was a three-pinned arch (coming from Wikipedia), I thought I would investigate further. Zooming in on the crown shows that there … Continue reading →

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New Links

Posted on 26/01/2011 by dougaj4

Two new Excel links on the list to the right, both with a tonne of good information on how to get more out of Excel: Bob Phillips writes the Excel Do, Dynamic Does blog, with a focus on business information.  The … Continue reading →

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Buckling of rings and arches

Posted on 01/01/2011 by dougaj4

In 2007 I wrote a paper on buckling of confined steel tunnel liners for the ANZ Geomechanics Conference in Brisbane, and in the course of that I noticed that the calculated buckling load of an unconstrained pipe subject to uniform radial load was significantly … Continue reading →

Posted in Arch structures, Beam Bending, Excel, Newton, VBA | Tagged , , , | 15 Comments

The structural analysis of domes: From Pantheon until Reichstag

Posted on 21/11/2010 by dougaj4

An interesting paper with technical details of several historical domed structures, available for free download, from Dokuz Eylul University, Izmir, Turkey: The structural analysis of domes

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Arches, anagrams and plagiarism

Posted on 14/07/2010 by dougaj4

A previous post discussed Robert Hooke’s solution for the optimum shape of an ach structure standing under its own weight: “Ut pendet continuum flexile, sic stabit contiguum rigidum inversum” which translates as: “As hangs the flexible line, so but inverted will … Continue reading →

Posted in Arch structures, Newton | Tagged , , , | 3 Comments