[AMRadio] Tower Construction


Ed Swynar gswynar at durham.net
Mon Jun 12 07:13:42 EDT 2006


Hi Steve,

By running the ground through the concrete itself, do you not risk the
potential of the block being damaged, should your tower suffer from a direct
lightning strike...? Or is this merely another "...urban legend" I've heard
about tower installation, that has clung to the grey cells lo these many
years...? Hi Hi

~73~ Eddy VE3CUI - VE3XZ



----- Original Message -----
From: "Stevan A. White" <w5saw at pathwayz.com>
To: "'Discussion of AM Radio'" <amradio at mailman.qth.net>;
<boatanchors at mailman.qth.net>
Sent: Sunday, June 11, 2006 11:32 PM
Subject: RE: [AMRadio] Tower Construction


> DO RUN THE GROUND THROUGH THE CONCRETE!  Take a look at the information on
> this site first though.  You may be glad you did.
>
> http://www.scott-inc.com/html/ufer.htm
>
> Best Regards,
> Steve White, W5SAW
> SW Commercial Electronics
>
>
> -----Original Message-----
> From: Ed Swynar [mailto:gswynar at durham.net]
> Sent: Saturday, June 10, 2006 2:16 PM
> To: Discussion of AM Radio; boatanchors at mailman.qth.net
> Subject: Re: [AMRadio] Tower Construction
>
>
> Hi Dave,
>
> I have a 48' tall, tapered, self-supporting "Delhi"-brand tower --- 6
> sections at 8' long each.
>
> The prescribed / manufacturer's recommendation is to bolt a 3' straight
> formed extention at the base of each leg (total of 3), & to "suspend"
these
> (a temporary wooden "cradle" will do admirably, as the cement sets) in a
> hole dug 4' square, & 4-1/2' deep --- the cement is to come but a few
inches
> below the bottom legs of the actual tower section.
>
> Oh yes --- the bottom 1' of the square hole is to be "belled" outward a
> foot, or so.
>
> The documentation says this is good for heights of up to 64', or so...I've
> never gone beyond 48', & have never, EVER had an ounce of trouble in the
two
> locations that I've had my tower up.
>
> BTW, the top of the tower as an old Cornell-Dubelier AR-44 rotator, & a
> 3-element Hy-Gain TH3 MkIII triband yagi...
>
> Use "industrial"-grade coarse cement, & do NOT run any ground leads
through
> the block itself!
>
> ~73~ Eddy VE3CUI - VE3XZ
>
>
>
> ----- Original Message -----
> From: "david knepper" <collinsradio at adelphia.net>
> To: <AMradio at mailman.qth.net>; <boatanchors at mailman.qth.net>
> Sent: Saturday, June 10, 2006 12:44 PM
> Subject: [AMRadio] Tower Construction
>
>
> > I am thinking about buying a stick of Rohn 55G in cement with about 3
> > or 4 feet sticking out of the ground.  I wonder how many sections of
> > 55G I
> could
> > mount without guys.  I do have a strong base plate for the 55G but
> cementing
> > a section seems to be sturdier.  Any thoughts?
> >
> > Thanks
> >
> > Dave, W3ST
> > Publisher of the Collins Journal
> > Secretary to the Collins Radio Association
> > www.collinsra.com - the CRA Website
> > Now with PayPal
> > CRA Nets: 3805 Khz every Monday at 8 PM EST
> > and 14255 every Saturday at 12 Noon EST
> >
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>
>
>
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