I would go with angle iron rather than tubing. Its much easier to cut and
weld or bolt together than tubing is, especially if you do a 4 leg design
because all the corners are square, you don't have to try to do 60 degree
corners.
If you take a look at some of the specs and drawings on the rohn ssv series
it may give you some ideas. you might also look for the hdbx series, those
are triangular but you can get an idea of how much metal each leg has and
the spacing.
http://www.rohnnet.com/rohn-ssv-self-supporting-towers
very important for self supporting towers is the base, so pay special
attention to that.
David Robbins K1TTT
e-mail: mailto:k1ttt@arrl.net
web: http://wiki.k1ttt.net
AR-Cluster node: 145.69MHz or telnet://k1ttt.net
-----Original Message-----
From: TowerTalk [mailto:towertalk-bounces@contesting.com] On Behalf Of
Douglas Ruz
Sent: Thursday, June 11, 2015 21:05
To: Richard (Rick) Karlquist; towertalk@contesting.com
Subject: Re: [TowerTalk] Self supporting tower...
Hi Rick,
Thanks for your ideas...
What about 90 degrees Galvanized Angle Iron for a 4 legs tower???
I think i can get some HD tubing from High Pressure boilers but not
galvanized...
73....Douglas, CO8DM
"No creo que haya alguna emoción más intensa para un inventor que ver alguna
de sus creaciones funcionando. Esa emoción hace que uno se olvide de comer,
de dormir, de todo." - Nikola Tesla
----- Original Message -----
From: "Richard (Rick) Karlquist" <richard@karlquist.com>
To: "Douglas M. Ruz Sobrado" <co8dm@frcuba.co.cu>;
<towertalk@contesting.com>
Sent: Thursday, June 11, 2015 4:54 PM
Subject: Re: [TowerTalk] Self supporting tower...
>
>
> On 6/11/2015 11:12 AM, Douglas M. Ruz Sobrado wrote:
>> Hi Group !!!,
>>
>> I would like build a 70 ft Self Supporting tower...Unfortunately
>> towers are not available here, so, i need build it by my self.
>>
>
> The simplest thing for you to do is to find out what kind of
> structural tubing is available in CO-land and then engineer a tubular
> tower with what you can get. MUCH simpler than a lattice tower.
> Possibilities might be steel well casing or drilling tubing. Not, of
> course, water pipe.
> There have been various articles about homebrew tube towers, but you
> can't copy what they did.
> You have to adapt to whatever tubing you can get.
> Good luck on your hunt!
>
> Rick N6RK
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