[TowerTalk] Guy anchor footings

[Stephanie]

Pete Smith wrote:
> 
> At 10:20 AM 10/18/98 -0400, you wrote:
> ...
> >The problem I have is both anchors need to be 3x3x1.5 four feet in the
> >ground. Ive accomplished that with one anchor but the other Ive hit a
> >solid area of rock...I tried moving the hole but still hit more ROCK
> >about 3 feet down. The hole is kinda on a sloping part of my property
> >with one edge of the hole depth measuring 3 feet (closest to tower) and
> >the other edge only 2 feet. I dig both holes with a FORD tractor backhoe
> >so the hole is not getting any deeper unless I start blasting with some
> >TNT...;-).  Can I compensate for the lack of depth by making the
> >concrete footings bigger ? Im using GAR30 (Rohn guy anchors..7 feet
> 
> Since your  3/16 EHS guy wire has a breaking strength of around 4000 lb,
> you can use additional concrete as long as it weights at least that -- 1.5
> cu yd would be enough, at over 5K pounds.  

Wow, that means Ill have an anchor footing showing above ground...Hmm
Ill have to think about that...How did you arrive at 1.5 cu yards ?

Alternatively, you can get
> hardware to bolt right into the rock itself, if there's a single piece that
> weighs enough.

The rock is too fragmented to really secure anything to it.
> 
> 73, Pete Smith N4ZR
> n4zr@contesting.com
> 
> "That's WEST Virginia.  Thanks and 73"

-- 
Stephanie


http://www.qsl.net/kd2rz

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