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A design flaw that almost wiped out an NYC skyscraper (2014)

9 点作者 Mainsail大约 1 年前

3 条评论

themadturk大约 1 年前
So if the mass damper needs to be &quot;running&quot; to work, why wasn&#x27;t a generator installed to keep it running in the event of a power failure?<p>Besides that question, the article contains several flaws. For instance, the context around the storm that never happened are vague. What were workers &quot;welding&quot; overnight to help mitigate wind problems during the storm? What of other storms?<p>The name of the architecture undergrad who pointed out the problem is obviously not &quot;lost to history,&quot; since the article mentions her name and some of the circumstances of her discovery and reporting the problem further down.<p>It appears to be hard for amateurs to get a decent photo of the new version of St. Peter&#x27;s Lutheran. It so blends in to the skyscraper above it it&#x27;s hard to see (there are better pictures online than on the church&#x27;s website). No matter how disappointing the old church looked, the new one is simply dull.
rurban大约 1 年前
I would rather call this, which &quot;Will Wipeout the Citicorp building&quot;. We dont know what happened with the emergency repairs then, but it is certainly not possible to fix the quarter wind problem enterily. I remember being taught about this particular Citicorp problem in my structural engineering class 30 years ago.
ggm大约 1 年前
Two large box girder bridges constructed in the same manner, one in Wales and one in Melbourne Victoria collapsed during construction because of flawed computer modelling of engineering stress.