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Nick Weall

Nick Weall club

Posted: 13 Oct 2023

Taken: 30 May 2009

14 favorites     16 comments    86 visits

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HFF from Millenium Bridge ~ London ~ closed for repairs again

HFF from Millenium Bridge ~ London ~ closed for repairs again
www.walks.com/blog/why-is-the-london-millennium-bridge-famous/#:~:text=The%20bridge%20had%20a%20cracking,The%20structural%20engineers%20were%20Arup.

Berny, photosofghosts, Nouchetdu38, Petar Bojić and 10 other people have particularly liked this photo

Latest comments - All (16)
 Nick Weall
Nick Weall club has replied
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Yes Rosa this is one my my favorite bridges with as you say one of another famous pieces of architecture by Christopher Wren who for a time lived in East Knowle.

Thanks for your good wishes ~ Hanwe ~ Nick
17 months ago. Edited 17 months ago.
 Nick Weall
Nick Weall club has replied
(see the discussion)
Hi dear LGM ~ Yes you need to be up early to have a clear bridge (or stay up very late). This bridge is not so far from St Thomas's which I suspect put opportunity your way to stretch your legs now and then.
I'm sorry to learn that you have been confined to the house for most of the day. Here it has been cloudy after a damp start with the sun coming out to play around lunchtime for a while. Now it is back to light rain.

I hope that you enjoy some better weather over the weekend ~~~
17 months ago.
 Nick Weall
Nick Weall club has replied
(see the discussion)
Hi Herb ~~~ Perhaps your footfalls started off the swaying :~) ~ Thanks for your good wishes ~ Hanwe
17 months ago.
 Peter_Private_Box
Peter_Private_Box club
Hi Nick
A very nice picture, which I like very much!
Wonderful and interesting composition
As I remember, the designers had screwed up, and not realised the cumulative effects of people walking in step to induce harmonic motion... The cost of the extra stiffening to change the fundamental frequency was millions!!
Best Wishes, HFF, a nice weekend, and stay safe!!
Peter
17 months ago.
 Nick Weall
Nick Weall club
Hi Peter

The natural sway motion of people walking caused small sideways oscillations in the bridge, which in turn caused people on the bridge to sway in step, increasing the amplitude of the bridge oscillations and continually reinforcing the effect; the maximum sway was around 70 millimetres (2.8 in).

That is the official explanation ~~~
17 months ago.

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