Might also be useful to provide some conceptual information on what the
engineering costs and why. Perhaps some range of time an engineer has
to consume to get typical jobs done, and the risk an engineer takes in
signing off on the design.
Rich
NU6T
jimlux wrote:
> Dave - AB7E wrote:
>
>> Those are all very good comments, which is why I think it is unreliable for
>> anyone here on the reflector to encourage him to do much of anything
>> specific, short of having an engineer check out his proposed installation.
>> If the rock isn't really "solid" with a compression strength somewhere in
>> the vicinity of 3,000 PSI (and AN Wireless actually specs 4,000 PSI for
>> their freestanding towers), then the rock isn't really equivalent to
>> concrete and the required foundation width to resist an overturning moment
>> is rather indeterminate.
>>
>> The alternative, of course, is to simply overkill everything and put in lots
>> of concrete (particularly in width) .... but at $100+ per cubic yard it
>> wouldn't take much extra of it to offset the "savings" of not hiring an
>> engineer.
>>
>>
> An excellent point..
>
>
>> I'll shut up now ...
>>
>>
>
>
> Actually, this discussion says that a generalized tutorial on the
> mechanics of towers might be good for Dayton or the Handbook. Not to
> the point of being able to do the calculations, but to explain the
> difference in bases for guyed vs freestanding towers, and the different
> strategies for freestanding (deep and skinny vs wide and flat). And to
> give some background on terminology.
>
> _______________________________________________
>
>
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk@contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
>
>
>
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|