[TowerTalk] 45G Fdn

[bill rubin]

The NEW Rohn spec. direct from the engineering office shows 10 - #7 vertical
rebar, thats 7/8" !!!
I used that today for my project with 4 - 1/2 rebar making a 2'3x2'3
frame.

I did not what to do use 7/8 but that is what the spec was and my permit
zoning department inspected it !!

Now if i was not getting an inspection, YES i would still use rebar !!!  but
just 1/2

73' Bill N1HWC


On 9/6/07, Phil Camera <kb9cry at comcast.net> wrote:
>
> 1. Do I really use rebar for my CB2 hole?
>
> Yes, really.  You need Qty=4, No. 4 bars vertical and None horizontal (but
> won't hurt to install them to hold the verticals in place during the pour).
>
> If so, what are the lateral ties shown?
>
> None needed for a CB2
>
> Are they rebar or wire?
>
> Since none are specified you could use wire to hold the verticals in
> place.
>
> I presume they hold the four vertical rebar pieces rigid?
>
> In the larger bases they add structural support as well.
>
> If that is there only purpose, could I not just push the four
> vertical pieces into the wet concrete afterwards, making sure I got at
> least 3
> inches below the concrete surface and did not come out the bottom?
>
> Yes but this may be hard to do and ensure you get them in vertical and if
> you hit a snag and can't get them in, now what?
>
>
> 2. Since the drawing also covers the foundation for Rohn 25, I never heard
> of
> anyone putting rebar into a 25 hole around this area.  Could someone
> please
> clarify this for me.
>
> Yes even CB1 base specifys vertical bars.  I guess those folks didn't
> follow the manufacturer's recommendations.
>
>
> 3. Below the 4 foot level bottom of the hole, how much more do I have to
> dig to put gravel for drainage?  I have a pile of 5/8" minus I use for
> filling in the
> driveway holes that I would use.
>
> Most folks go 6 inches with 4 inches of leg protruding into that.  Some
> folks slop tar around that portion for extra corrosion protection.  I wire
> tied landscaping fabric to the ends to make sure that no stone "plugged" up
> the leg.
>
>
> --
> Phil - KB9CRY
> Lockport, IL
> http://nidxa.org/memberWWW/kb9cry_home.htm
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