Pier pressure

Just in case you've not heard, this time last year Ryde Pier on the Isle of Wight (A Grade II listed structure) was closed to all road traffic as a more-sensitive-than-usual examination of the iron struts and girders and bolts revealed that some bolts were so corroded that they were only holding on by a millimetre or two. The trains still ran however. Nearly a year (and £5m) later it re opened...minus its speed bumps and cushions, but with 'average speed cameras' instead and a top speed of 10mph. (Keep exceeding it and you won't be allowed on the pier.) The engineers had, I imagine, calculated that the energy transfer from cars speeding up and braking and then the percussion of them passing over the bumps and cushions was one of the factors contributing to the serious problems to the structure of the pier.

Asked on 9 August 2011 by SJ. Isle of Wight

Answered by Honest John
Many thanks. But how incredibly stupid to have installed speed humps on a structure like that in the first place.
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