SEG Plaza Evacuated Due Building Swaying - Page 1
Forum section: electronics / general

author: sleemanj
author_rank: Super Contributor
timestamp: May 18, 2021, 11:01:18 pm
content: https://www.stuff.co.nz/travel/news/125175274/panic-as-chinese-skyscraper-starts-to-sway

author: SmallCog
author_rank: Frequent Contributor
timestamp: May 19, 2021, 03:14:49 am
content: Saw that in the news and I'm glad everyone is safeClick baity thread name would be Shenzen Market evacuated, given how often Dave mentions the place

author: AlbertL
author_rank: Regular Contributor
timestamp: May 19, 2021, 12:18:08 pm
content: Despite the statement that wind has been ruled out as the cause, I'm inclined to think that it is involved. Perhaps a vortex-shedding phenomenon interacting with the building's natural period of oscillation?

author: themadhippy
author_rank: Super Contributor
timestamp: May 19, 2021, 12:35:41 pm
content: One of the stalls received the wrong type of Tesla coils,fired it up and things started oscillating

author: G7PSK
author_rank: Super Contributor
timestamp: May 19, 2021, 02:26:25 pm
content: Chinese buildings are infamous for the shoddy workmanship and materials. These two guys travel around China and look at some of the buildings.https://youtu.be/XopSDJq6w8E

author: Karel
author_rank: Super Contributor
timestamp: May 19, 2021, 02:46:54 pm
content: Quote from: G7PSK on May 19, 2021, 02:26:25 pmWhat about the many bridge collapses in Italy (usually caused by lack of maintenance)....

author: JPortici
author_rank: Super Contributor
timestamp: May 19, 2021, 04:00:03 pm
content: Quote from: Karel on May 19, 2021, 02:46:54 pmAnd some with fundamental design flawsAnd some built by companies controlled by mobsters/frauds with "light" concrete

author: StillTrying
author_rank: Super Contributor
timestamp: May 19, 2021, 04:04:22 pm
content: 1000s of people in an electronic gadgets market, the building was swaying for an hour, but there's only one video?

author: schmitt trigger
author_rank: Super Contributor
timestamp: May 19, 2021, 04:20:04 pm
content: Infrastructure collapse fits two broad causes:- Old infrastructure, in service for a long time, many times for several decades, whose maintenance has been neglected for a while.- New infrastructure, in service for only a few years at most, which were designed and/or built incorrectly.In my opinion, these are two very distinct failure mechanisms which cannot be compared one vs. the other.In Mexico City we have just had a couple of weeks ago the failure of a span on the subway’s line 12, which is the newest by far.Several other lines are close to 45 years older and yet have successfully withstood several large earthquakes without major damage. To me, the line 12 failure is a clear example of the latter cause.I ignore the details of the building failures mentioned on the posts above, to determine to which group they belong.

author: georges80
author_rank: Frequent Contributor
timestamp: May 19, 2021, 07:53:05 pm
content: Probably built by relatives of this guy (in one of the SEG marketplace buildings). Took this pic last visit (just pre-covid), dec 2019.Welding with no eye protection and a bunch of folk watching on. Guess once you are blind you can weld even easiercheers,george.

author: pardo-bsso
author_rank: Frequent Contributor
timestamp: May 19, 2021, 11:27:23 pm
content: Also the splatter and molten slag drops will ruin the floor tiles.(That was one of the first things I learned welding at home)