[TowerTalk] Tower Base rotated 5 to 10 degrees off correct bearings

[Roger (K8RI) on TT]

 From my point of view there are only two acceptable solutions which I 
believe have been mentioned individually.
EITHER dig a new hole, or use a pier pin base. The preferable is the 
pier pin base, but does take more care up to the first set of guys.  The 
other is to dig a new hole.

The rotation is out of spec and modifications are usually inadvisable.

73, Roger (K8RI)

On 8/9/2017 Wednesday 8:21 AM, john at kk9a.com wrote:
> I had the same problem when I built my station in P4 but luckily I was
> there when the anchor holes were dug so I was able to adjust my plan,
> although it slightly shrunk my anchor radius. 140' tower in PJ4 is huge!
> Is this going to be your new contest home?  I am sure that you know the
> how much maintenance this will be. With a tower that size it's probably
> best to use a pier pin base and let the tower rotate into position.
> Another option might be to shim the base but it seems risky.
>
> GL
> John KK9A
>
>
>
> To:	"towertalk at contesting.com" <towertalk at contesting.com>
> Subject:	[TowerTalk] Tower Base rotated 5 to 10 degrees off correct bearings
> From:	Richard Smith <n6kt1 at sbcglobal.net>
> Date:	Wed, 9 Aug 2017 05:10:30 +0000 (UTC)
>
>
> Asking for some assistance with a tower issue...
> I'm involved with some folks in building a station in PJ4. One of the first
> tower bases was accidently set in concrete in a position that it is rotated 5
> to 10 degrees from its correct position in relation to the guy anchors. I'm
> hoping that there might be a good suggestion or two as to what might be a
> good
> fix or work-around.
> The tower is AB-105, and the base is a section of AB-105 set in concrete. The
> plan is to have the tower built up to 140 feet, with guys at 40, 80, and 120
> feet.
> Some alternatives:
> If we "use as is", will the torque of the guy wires cause problems for the
> tower?
> Should we consider some kind of adaptor plate for the guy brackets to correct
> the situation?
> Are we stuck digging and pouring a new base, or new guy anchors, with the
> correct positioning?
> Any ideas will be much appreciated.
> Thanks, 73,
> Rich, N6KT
>
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-- 

73

Roger (K8RI)


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