[TowerTalk] Fw: tower base question

[Bill K2OWR]

:::: Thanks very much Joe, as well as the others.
 Your info told me just about everything I needed to know.

The last tower I put in we actually hit no significant rock, but that was in NJ, this is Tennessee.
Mike, WA2VUN, welded an enormous rebar cage that went in the hole that was 13'x13'x8'
I recall it took 2 full cement truck loads, which I think came to 15 yards or so (?)
It was 140' free standing military solid bar tower.
This little tower is a small project compared to that one!

Thanks again for the help.
Tower Talk is indeed a great resource.

BILL K2OWR



----- Original Message ----- 
From: Joe - WDØM 
To: Towertalk at contesting.com 
Cc: Bill K2OWR 
Sent: Thursday, December 10, 2009 10:22
Subject: Re: [TowerTalk] Fw: tower base question


Hi Bill,

I went through something close to what you're experiencing, but the rock on my 5 acres is just 6 inches under the soil.  You can see how I did it on my web site:

http://www.wd0m.com/

Click on "Ham Radio", then on "Tower Project".  

Hope that helps....if you have questions, let me know.

73

Joe
WDØM



My entire property seems to contain a serious rock shelf about 3' down 
everywhere I dig.
I would like to dig a hole down to that rock surface, then drill and 
install some rebar or something before I pour concrete in order to 
anchor to the rock at least a little.

I plan to gin pole the tower up as I have done several times in the 
past.,
I don't think I need the sort of base I put in for free standing 
crankups , since this one will be seriously guyed 3 ways at 3 points
So mostly the base is for support from sinking. My plan is to 
attach/weld some rebar to one section, then sink it into the hole and 
fill with concrete.
Since I can only get three feet down I was thinking maybe I could 
drill and epoxy some rebar into that rock and just pour around the 
tower section I put in there.

Does this make sense?
If not, what do you recommend?
If it does, do I just drill holes and lay in the rebar? What do I use 
for epoxy?

BILL K2OWR
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