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ZBAG, a respectful question
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ernieth(at)gmail.com
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Posted: Wed Jun 17, 2009 4:03 am Post subject: ZBAG, a respectful question

ok,But they still must have a natural resonant frequency, they just don't have the same energy input from the wind.

 



This of course is a SWAG.(shit wild ass guess)

 



Do not archive

 



 E

 

 

On Tue, Jun 16, 2009 at 11:13 PM, Bryan Martin <bryanmmartin(at)comcast.net (bryanmmartin(at)comcast.net)> wrote:

[quote]  --> Zenith-List message posted by: Bryan Martin <bryanmmartin(at)comcast.net (bryanmmartin(at)comcast.net)>

 

 Off Topic.

 

 Nope. That's why suspension bridges have the steel gratings down the center. The gratings kill the lift that would be generated in high wind conditions. The first Tacoma Narrows bridge had a solid road bed with no gratings. It was also designed too thin and flexible. Engineers learned a lot from the mistakes made at Tacoma Narrows. Modern suspension bridges absolutely will not react like the first Tacoma Narrows bridge did, even under the strongest winds.  

 

 On Jun 16, 2009, at 5:24 PM, ernie wrote:

 

  	  Quote: 	
		   Dave,

 

 I think all Suspension bridges have a flutter in them under the right wind loads, maybe the civil engineers in the crowd will know better, there is this case.

 http://en.wikipedia.org/wiki/Tacoma_Narrows_Bridge

 

 	
 

 

 



 -- 

 Bryan Martin

 N61BM, CH 601 XL,

 RAM Subaru, Stratus redrive.

 do not archive.



 

 

 

 

 

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