When I poured the base for my guyed 60 foot Rohn 25 in Illinois I just
placed straight lengths of rebar in the hole as I was pouring the concrete.
Was this OK or should I wire up some sort of frame?
Mark N1UK G3ZZM
----- Original Message -----
From: "Dino Darling" <dino@k6rix.com>
To: "Gary 'Joe' Mayfield" <gary_mayfield@hotmail.com>
Cc: <towertalk@contesting.com>
Sent: Thursday, 05 July, 2007 2:57 PM
Subject: Re: [TowerTalk] Bottom Section In Concrete and Bolt question
> 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
>
> _______________________________________________
>
>
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk@contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|