It is my educated OPINION that you should have rebar within 6" of the
circumference of the concrete pier. The purpose of the rebar is to hold
the concrete block together and should NOT be tied to the tower legs.
Grade 5 bolts should do it nicely. At one time I did some investigating
on stainless steel hardware and remember there are stronger types, but I
would have to really dig to find that info again. I believe standard
stainless steel would be too soft for use in joining tower sections, but
don't quote me.
Use what Rohn uses!
Dino - K6RIX
dino@k6rix.com
> -------- Original Message --------
> Subject: [TowerTalk] Bottom Section In Concrete and Bolt question
> From: "Gary \"Joe\" Mayfield" <gary_mayfield@hotmail.com>
> Date: Thu, July 05, 2007 10:43 am
> To: <towertalk@contesting.com>
>
> I'm about ready to start a tower project and need some advice.
>
> I have a 60 foot Jontz tower in good condition. I plan to put the
> first 5
> feet into the hole with gravel at the bottom so it will drain.
>
> 1. Do I need a rebar cage in the concrete around the portion of the
> tower
> set in concrete?
>
> 2. When taking the tower down I broke many of the bolts holding it
> together. They are unique and unavailable. What grade/type of bolts
> do I
> want to use to replace them?
>
> I am not sure how much of this tower I am putting up and may stop as
> low as
> 35 feet. The tower will be supporting my satellite antennas (2mtr
> yagi, 70
> cm yagi, L band helix, S band BBQ grill dish). The height will depend on
> how much of the sky can be seen over the nearby trees. I will not be
> climbing this tower as it will be placed by a crane and the antennas
> put on
> with a bucket truck.
>
> Thanks and 73,
> Joe kk0sd
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