[Towertalk] Pouring base of tower

[Chuck Lewis]

Jon (and list),

I agree, a guyed tower would be a totally different story, but I checked the
original post, and it was for a self-supporting tower, thus the long
discussion. A clip of the original question is included below:

>>I am planning the installation of a self-supporting tower.  My contractor
>>asked me a question to which I don't know the answer.  Is there any reason
>>why he cannot pour the base in two pours as long as they are tied together
>>by the rebar cage?  The plans call for the foundation to be 9 x 9 at the
>>base and then 5 x 5 at the surface.  He would prefer to pour the 18" thick
>>9 x 9 foot section before the 5 x 5 foot section.  Any reason why not?

>>Thanks

>>Wes, WZ7I

Chuck, N4NM

----- Original Message -----
From: <na9d@speakeasy.net>
To: <kk9a@arrl.net>
Cc: <TOWERTALK@contesting.com>
Sent: Thursday, December 05, 2002 11:42 AM
Subject: Re: [Towertalk] Pouring base of tower


> You are absolutely right.  If it is a guyed tower, most of the stress at
the base will be a compression force.  Very little if any lateral forces on
the concrete as these are all taken up by the guys.  Does anyone doubt me?
In the extreme sense are pinned bases like mine.  The tower is not even
fixed at the base.  It just sits on the concrete.  It's very stable and
doesn't move.  The guy wires not only prevent lateral forces on the
concrete, the also provide compression forces and pull the tower downward.
>
> 73,
>
> Jon
> NA9D
>
> ========================================================
> ~~Get Speakeasy Broadband - Where the Customer Rules!~~
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>
> On 05 Dec 2002, <kk9a@arrl.net> wrote:
>
> > This thread has been going on for a while and
> > I forgot the original question. I don't recall
> > anyone saying this is for a self supporting
> > tower. If it is for a guyed tower and he's
> > building it to Rohn's specs, than I see no
> > problem with separate pours as the lower
> > section IS just a footing.
> >
> > John
> >
> >
> >
> >
> > >
> > >----- Original Message ----- From: "Red"
>
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