> All,
>
> Carl is correct. When using standard Rohn sections for a
> base section, a rule of thumb is that the bottom of the
> base section rests on top of a minimum of 6 - 8" of gravel
> to allow the legs to drain.
I'd rephrase that and say the bottom of the base sections sets *in* the top
of a 6 to 8" layer.That keeps the concrete from flowing down and around the
bottom of the legs. Usually you have to use a frame at the top of the hole
to hold the tower section from setteling too deep into or even through the
pea gravel during the pour.
http://www.rogerhalstead.com/ham_files/tower13.htm If you look closely you
will see the top of the section to be set in the concrete is just above the
form . The concrete was crowned to just below the cross braces under the
bolts.
http://www.rogerhalstead.com/ham_files/tower14.htm
73
Roger (K8RI)
>
> 73,
> Gene K1NR
>
>
>
> On Thu, 28 Jun 2007 19:54:00 -0400
> "jeremy-ca" <km1h@jeremy.mv.com> wrote:
>> No and you DO NOT want them sealed; the tower legs must
>> be able to drain.
>>
>> Carl
>> KM1H
>>
>>
>>
>> ----- Original Message -----
>> From: "Dale Martin" <kg5u@hal-pc.org>
>> To: <towertalk@contesting.com>
>> Sent: Thursday, June 28, 2007 7:47 PM
>> Subject: Re: [TowerTalk] rohn qusestion
>>
>>
>> >
>> > And are the legs of the bury-able section sealed at the
>> bottom?
>> >
>> >>
>> >> 5' feet and 6'8"
>> >>
>> >> Carl
>> >> KM1H
>> >>
>> >>
>> >>
>> >>
>> >> > What is the difference between the short sections
>> that you bury in
>> >> > concreate and a regular 10 foot section?
>> >> >
>> >> > Thanks
>> >> > _______________________________________________
>> >
>> >
>> > _______________________________________________
>> >
>> >
>> >
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>> >
>> _______________________________________________
>>
>>
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