[TowerTalk] what is 'circular tie' as is used in a towers concrete base?

[Jim Lux]

On 10/20/15 8:29 AM, StellarCAT wrote:
> Rohn says to use 8 #7 rebar (SERIOUSLY! 7/8”!!) ... and then it shows
> ‘#4 circular ties 2 1/2” OC with 2” cover with 24” laps’
>

how big a diameter is that circle? A couple feet?

I've seen truckloads of coils of rebar going by me on the freeway, so I 
suspect it's something you can just order and cut to size.  I suppose a 
suitable bending jig (like a drum full of concrete or something) with a 
long piece of pipe to help give leverage would also work. 1/2" rebar is 
bendable by standing on it and picking up the free end.

It also doesn't have to be circular with micron precision.  24" laps 
seems a bit long, considering the circumference of a 2 1/2 foot circle 
is less than 8 feet. Maybe they're assuming you'll use a 10 foot piece 
of bar to make the circle?


> huh?
>
> I’ve always just dug a hole – usually around 3 x 3 x 3 ... put the
> tower section in (with temp guys) ... put in a few pieces of 1/2” re
> bar and been done with it .... but now I have to follow the Rohn
> specifications which seem onerous at best (I know, I know – guys that
> say “follow it to the letter”) ... and I’ve no clue what #4 circular
> tie is. SURELY its not #4 rebar BENT in a circle!?
>
> Googling so far hasn’t shown me anything that helps.
>
> Gary K9RX
>
> _______________________________________________
>
>
>
> _______________________________________________ TowerTalk mailing
> list TowerTalk at contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
>