[TowerTalk] Guying a tower....Heresy to follow..... True statement!

[Richard Hill]

Tacoma Narrows Bridge:  http://en.wikipedia.org/wiki/Tacoma_Narrows_Bridge_(1940)

Real Life Experience informing Good Engineering Practice.  The value of understanding frequency and resonance.

Rich
NU6T

-----Original Message-----
>From: David Gilbert <xdavid at cis-broadband.com>
>Sent: Jan 18, 2010 9:41 AM
>To: TowerTalk <towertalk at contesting.com>
>Subject: Re: [TowerTalk] Guying a	tower....Heresy	to	follow.....	True	statement!
>
>
>Doug,
>
>What you originally stated, and what I originally responded to, was 
>"real life experience which trumps any theory any day."  I totally 
>disagree with that statement, with countless historical examples to 
>prove the point. 
>
>Actually, engineering DOES have all the answers given total knowledge of 
>conditions and proper application of theory.  We don't always have that 
>full knowledge, of course, but that isn't the fault of "engineering" per 
>se.  Trial and error is often what teaches us when we didn't fully 
>understand something, but it is engineering that lets us effectively 
>apply that new knowledge to the next situation.
>
>I will agree that many things are over engineered, but everyone has 
>their own impression of where that line should be drawn when safety or 
>financial liability is involved ... such as with towers.
>
>Dave   AB7E
>
>
>> Dave
>>
>> Where did I say that one should not engineer something?  My words were
>> 'over engineer'.
>>
>> Experience and engineering have to work together.  Too many folks
>> believe that 'engineering' has ALL the answers and completely discount
>> experience.  Engineering does not have all the answers.  That is my
>> point.  A lot has been and is learned from 'trial and error'.
>>
>> Doug
>>
>> I'll run the race and I will never be the same again. 
>>
>> -----Original Message-----
>> From: towertalk-bounces at contesting.com
>> [mailto:towertalk-bounces at contesting.com] On Behalf Of David Gilbert
>> Sent: January 18, 2010 10:12 AM
>> To: TowerTalk
>> Subject: Re: [TowerTalk] Guying a tower....Heresy to follow..... True
>> statement!
>>
>>
>> Let me clarify for you ... there is a huge difference between not over 
>> engineering something and not engineering anything at all.  Basing a 
>> decision solely upon experience falls into the category of not 
>> engineering anything at all, and that includes ignoring force vector 
>> formulas because your tower hasn't yet failed and not wearing a climbing
>>
>> belt/harness because you haven't yet fallen.
>>
>> Dave   AB7E
>>
>>
>> Doug Renwick wrote:
>>   
>>> Most can not see any similarity between what I said and what you are
>>> saying.  Sheesh, why do I dislike spin doctors.
>>>
>>> Doug  
>>>     
>>
>>
>>
>>   
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