You might also want to epoxy the rebar cage into the bedrock for increased
stability.
Bruce. K0son
Sent from my iPad
> On Oct 27, 2015, at 1:21 PM, Donald Chester <k4kyv@hotmail.com> wrote:
>
>
>
>> I am planning after the first of the year to put up my 80ft Rohn 45 guyed
>> tower.
>
>> Since my soil in Cheney is very rocky, I am not sure I can use the standard
>> Rohn concrete anchor (dead man) (4 ft. deep, 4 ft. wide by 6 ft. cement
>> anchor in rebar). I have just about solid rock 2 ft. under the surface. I
>> guess I could use a jack hammer. It is too solid to do with a backhoe or
>> small excavator.
>
>
>
>> I have debated as an alternative using 8 ft. I-beams, with 6 ft. below
>> ground... Is there a better alternative?
>
>
>> All suggestions appreciated.
>
>> Mel Ming N7GCO
>
> You don't HAVE to bury the guy anchor all the way in the ground, below grade.
> You could dig down 2 ft to the bedrock, and build concrete forms to extend
> the rest of the 4 ft anchor above grade, letting the partially buried block
> rest on the solid rock. You would have a 2 ft high 4' X 6' block of concrete
> above grade, but at least you wouldn't have to worry about keeping weeds
> cleared away from the anchor points, or someone running over a guy anchor
> with a mower. The soil on top of a buried anchor contributes infinitesimally
> to its staying power.
>
> Don k4kyv
>
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