It's About Liberty: A Conservative Forum
Topics => General Board => Topic started by: rickl on September 26, 2011, 08:25:46 PM
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http://www.nps.gov/wamo/washington-monument-earthquake-update.htm (http://www.nps.gov/wamo/washington-monument-earthquake-update.htm)
I'm surprised at how violent it appeared to be. I guess the shaking is magnified when you're in a tall building.
/hat tip Ace of Spades.
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I would guess your spot-on Rickl. The effect at the top of a tower would be magnified. It looks intensely frightening, and that was only a baby earthquake as they go.
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That was interesting for me because I was there a couple of years ago.
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I was there once, as a kid in the late 60s. We took the elevator up and the stairs down.
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Was there in the late 80's.
That was some impressive shaking. But even if you have a wide base, a solid structure is still sitting on what was once a soft tidal basin, that soft earth had to have been the primary cause for the shaking to be so evident as seen in that footage.
I looked it up, apparently the base is on a dense sand/gravel layer.
http://casehistories.geoengineer.org/volume/volume1/issue3/IJGCH_1_3_3.pdf (http://casehistories.geoengineer.org/volume/volume1/issue3/IJGCH_1_3_3.pdf)
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Yeah, and I'm not sure, but I don't think they built structural elasticity in towers back then.
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That one rangerette needs to change her shampoo to fix her itchies... ;D