What does everyone want to be... - Page 13

chelsey · #**121** 08-03-2007, 04:36 PM

Quote:

Originally Posted by panzerkiller

my uncle called us when I was celebrating my birthday yesterday and said he watched the whole thing

yeah...my sister in laws parents were the next ppl to go on the bridge...and the ppl in front of them were the ones to fall off the bridge...so thankfully they didnt fall.....but that must have been scary to have the person in front of you fall and not you.....i cant imagine

atra201 · #**122** 08-03-2007, 06:53 PM

congratulations Chelsey you've got your first 13-page-thread
but it's kinda freaky it's like friday the 13th
cause 13 pages by friday
woooooh

Rev · #**123** 08-03-2007, 08:46 PM

Quote:

Originally Posted by Deepwaters

I can't remember a bridge out here falling down on its own. Maybe it's because we have so many earthquakes they never get the chance.

How about the Tacoma Narrows Bridge (galloping gurdy)?

Rev · #**124** 08-03-2007, 09:06 PM

Quote:

Originally Posted by chelsey

yeah...my sister in laws parents were the next ppl to go on the bridge...and the ppl in front of them were the ones to fall off the bridge...so thankfully they didnt fall.....but that must have been scary to have the person in front of you fall and not you.....i cant imagine

Wow! Coming face to face with your mortality can be very scary.

It will be interesting to find out what caused the collapse. There obviously is a cause, we just don't know what it was yet (but we will).

lefty12357 · #**125** 08-03-2007, 09:21 PM

One area of the south end of the bridge actually shifted 50 feet sideways. The rest of it fell straight down. They were looking hard at that today.

Rev · #**126** 08-03-2007, 09:53 PM

Quote:

Originally Posted by lefty12357

One area of the south end of the bridge actually shifted 50 feet sideways. The rest of it fell straight down. They were looking hard at that today.

Right or left?

Reason I ask: In the video, I noticed a kink in one of the bottom members at the north end of the west side of the main span just as the bridge started to go. I already have a theory as to why, but ...

I guess I'm asking if the section shifted east?

lefty12357 · #**127** 08-03-2007, 10:09 PM

Yes, the decking section shifted east.

Deepwaters · #**128** 08-03-2007, 10:23 PM

Quote:

Originally Posted by Rev

How about the Tacoma Narrows Bridge (galloping gurdy)?

When did that happen? I moved out of Washington State in '96.

lefty12357 · #**129** 08-03-2007, 10:35 PM

I believe it was 1940.

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Rev · #**130** 08-03-2007, 10:43 PM

Quote:

Originally Posted by lefty12357

I believe it was 1940.

<OBJECT height=350 width=425>

<embed src="http://www.youtube.com/v/NWjIxiVQtU0" type="application/x-shockwave-flash" wmode="transparent" width="425" height="350"></embed></OBJECT>

</P>
If I remember correctly, the wind was only about 45 miles per hour. It happened to be that the bridge turned out to be "tuned" to that frequency (the deck and associated superstructure was too thin). As it started to twist, the wind would cause it to then twist further the other way. This continued until it tore itself apart.