[BC] 1000 foot tower for a dollar!

[seaberg1@sbcglobal.net]

Depending on the location the tubular might take on water. Weep holes are 
likely
to get plugged after a year or so. Then if water accumulates and freezes in 
the winter
you might have have a "grande problema". We did get away with water-pipe 
construction
in Ecuador but a cold night was 45 degrees.

Bob -- W3MDM

----- Original Message ----- 
From: "Mike McCarthy" <Towers at mre.com>
To: "Broadcasters' Mailing List" <broadcast at radiolists.net>
Sent: Thursday, August 03, 2006 10:36 AM
Subject: Re: [BC] 1000 foot tower for a dollar!


> It is possible to have a combination.  We have a 700 ft. G-5 which is 
> solid leg for the bottom 500 ft. and tubular the top 200 ft.  Granted, 
> this was a sectionalized tower.  But it's not THAT uncommon if the 
> engineering supports the use of tube/pipe versus solid.
>
> Also, Rohn 90 tower is tubular and is rated for something more than 1000 
> ft.
>
> IIRC, the reason tubing fell out of favor was the fact the difference 
> between tube and solid leg was it was more costly to use XXS pipe than to 
> simply go with a smaller solid rod.  2nd, it was the wind load created by 
> the wider pipe.
>
> MM
>
> At 10:39 AM 8/3/2006 -0400, Cowboy wrote
>>On Thursday 03 August 2006 10:21 am, Rob Atkinson wrote:
>>
>> > was surprised to read that the legs were tube and not solid.  thought
>> such a
>> > tall tower would have solid legs.
>>
>>  I saw that, too.
>>  I'd be real surprised if they really are tube.
>>  Most likely, he's mistaken.
>>
>>--
>>Cowboy
>>
>>
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