:hmmm: Remind me not to go to sea.
http://www.dailymail.co.uk/video/news/video-1136552/Watch-inside-cargo-ship-twist-contort-storm.html (http://www.dailymail.co.uk/video/news/video-1136552/Watch-inside-cargo-ship-twist-contort-storm.html) :goggleeyes:
Roger
all large structures flex I believe the Eifel tower sways about 2ft either side on a windy day!
It would be more serious to go to sea in a ship that size that did not flex cos it would be much more likely to break up!!! this sort of flex is an intentional and vital part of the design to ensure these ships are safe in such storms.
Best wishes
Simon
Like a ladder. If it doesn't flex when you climb it, it will break. TV transmitter masts move about a lot at the top. Emley Moor sways a bit and we had an OB reception room on the top.
Some bloke I saw swaying down the club the other night ended up falling over :D
Quote from: steve836 on November 18, 2014, 08:51:18 PM
all large structures flex I believe the Eifel tower sways about 2ft either side on a windy day!
After the 2011 earthquake in Tokyo, a nearby skyskraper under construction was visibly swaying back and forth for quite a while. Glad I wasn't in one at the time...
https://www.youtube.com/watch?v=NisWbAXfyWI (https://www.youtube.com/watch?v=NisWbAXfyWI)
Eeek!
I was living on the 7th floor of an apartment building at the time, and after getting home (just a 3 hour walk, trains weren't running) it felt like being on a ship due to a constant stream of aftershocks.
Eeeek!
Is there a mouse in here?
Anyway on the plus side I have developed a very good sense for telling whereabouts the epicentre of an earthquake is and its approximate magnitude (provided I'm inside a building; if you're outside you tend not to notice them, unless they're big).
I'm glad England keeps still.
Quote from: railsquid on November 19, 2014, 01:08:28 AM
Is there a mouse in here?
I think so, set a trap with a Blue Pullman on it, that should lure it out ;)
Paul
Quote from: steve836 on November 19, 2014, 08:39:56 AM
I'm glad England keeps still.
:no: :no: :no:
Sorry to report that we do shake & wobble a bit from time to time :)
It's just that the shakes & wobbles are not that noticeable :unimpressed:
Roger
Quote from: steve836 on November 19, 2014, 08:39:56 AM
I'm glad England keeps still.
Ya reckon ??? !!! Ours are just normally under mag 3, so no-one notices ...
Some years back, was at the top floor of the office tower block in Washington (opposite the main shopping centre there); whenever the wind blew, it rocked ... and a snowstorm just put you in a total white world - nothing could be seen at all !
Quote from: railsquid on November 18, 2014, 11:15:55 PM
After the 2011 earthquake in Tokyo, a nearby skyskraper under construction was visibly swaying back and forth for quite a while. Glad I wasn't in one at the time...
https://www.youtube.com/watch?v=NisWbAXfyWI (https://www.youtube.com/watch?v=NisWbAXfyWI)
Intentional. The whole structure sits on giant shock absorbers which allow it to sway but absorb the energy after a few cycles. Otherwise there would easily be enough energy to destroy parts of the structure.
If you go high enough in somewhere like Canary Wharf on a windy day you can feel it swaying.
We had an earthquake once when I was in a 60s BR building in Derby. Those on the top floor were quite shaken but those on the ground floor didn't notice anything. Basically the steel frame distorted like one of those trellis wine racks.
Quote from: edwin_m on November 19, 2014, 10:59:15 PM
Quote from: railsquid on November 18, 2014, 11:15:55 PM
After the 2011 earthquake in Tokyo, a nearby skyskraper under construction was visibly swaying back and forth for quite a while. Glad I wasn't in one at the time...
https://www.youtube.com/watch?v=NisWbAXfyWI (https://www.youtube.com/watch?v=NisWbAXfyWI)
Intentional. The whole structure sits on giant shock absorbers which allow it to sway but absorb the energy after a few cycles. Otherwise there would easily be enough energy to destroy parts of the structure.
Indeed. That's why pretty much every building here is build around a frame (either wooden or steel girders) rather than brick-built or as a monolithic concrete rebar structure.