[TowerTalk] Guy anchors for AB-577

George Dubovsky n4ua.va at gmail.com
Thu Feb 22 12:21:07 EST 2018


A properly rated clevis or pin shackle from the eye of the anchor to an
equalizer plate is the usual method.

73,

geo - n4ua

On Thu, Feb 22, 2018 at 10:29 AM, Andre VanWyk via TowerTalk <
towertalk at contesting.com> wrote:

> I am curious how you would add equalizer plates for guying at 5 levels,
> which is what I plan to do for my 160m elevated vertical for 160m using
> Rohn 25G insulated 30ft from the ground.
> Anyone with experience adapting the Hubble triple eye screw in anchors to
> Rohn equalizer plates or another way of doing this?
>
> The location of the vertical is not accessible for concrete trucks so if I
> can get away with using screw in anchors it would make this much easier.
> I plan to screw these in with a hydraulic auger mounted to a Dingo which
> is small enough to reach the location.  Being so wet here till later spring
> or early summer, this would shave a lot of time from my project too.
>
> Any pointers would be appreciated.
>
> 73
> NJ0F
>
>
> Sent from my iPad
>
> > On Feb 21, 2018, at 7:50 PM, John Langdon <jlangdon1 at austin.rr.com>
> wrote:
> >
> > We used to use these for installing small wind turbines (2500 pounds and
> 8+
> > meter blades turning at 100+ rpm with significant projected area, see
> > https://www.nrel.gov/docs/fy13osti/56500.pdf for details of one
> > installation). AB Chance has "distributors" who install these things -
> not
> > cheap, but they have extensive soil surveys and engineering tables and
> when
> > installed to a specified torque they give you a specific anchor strength
> to
> > satisfy building permit and wind survival specs. A guyed tower with these
> > anchors was usually cheaper than the alternative such as Rohn SSV.
> >
> > 73 John N5CQ
> >
> >
> > -----Original Message-----
> > From: TowerTalk [mailto:towertalk-bounces at contesting.com] On Behalf Of
> Shawn
> > Donley
> > Sent: Wednesday, February 21, 2018 4:20 PM
> > To: towertalk at contesting.com
> > Subject: Re: [TowerTalk] Guy anchors for AB-577
> >
> > Depending on your location, time of year can make all the difference when
> > installing screw anchors.   I used some Hubble/AB Chance "No-Wrench"
> screw
> > anchors with a 8" diameter helix and 66" long rod.
> >
> >
> > https://www.hubbell.com/hubbellpowersystems/en/
> Products/Power-Utilities/Anch
> > oring-Foundations/Helical-Anchors-Piles/No-Wrench-Screw-
> Anchor/No-Wrench-Anc
> > hor/p/1915218
> >
> >
> > Tried to get them down into my ground of heavy clay/sand mix in early
> > summer.   What a job !.   I had a buddy help.  A big fellow (think NFL
> > lineman) and we still could not get one anchor fully in.  But early the
> next
> > spring when the frost was gone, it was still cool, and the ground was
> soft
> > under foot, I managed to get the problem anchor fully in by myself along
> > with a couple of others.  Sometimes you have to go in a quarter turn,
> back
> > it off a half and then drive down again.  Maybe tree roots, not sure.
>  Much
> > easier in the spring but still a hard job that I would not want to
> repeat.
> >
> >
> > If you can get your local power company to come out and put them in with
> > their hydraulic tools (same as the ones they use to bore a hole for a
> power
> > pole) that's the way to go.  In my case, the anchor spots were in the
> woods
> > and no way for a truck to get back there.
> >
> >
> > There's even a portable hydraulic installation tool for situations like I
> > had.   WARNING.  If you've huffed and puffed to put screw anchors in by
> > hand, watching this video might make you feel sick.
> >
> >
> > http://videos.hubbellpowersystems.com/detail/videos/anchors---
> utility/video/
> > 5062658445001/chance-portable-anchor-installer---hubbell-power-systems
> >
> >
> > I saw some of our local electrical co-op lineman having lunch and asked
> them
> > if they might stop by with one of these  portable installers.   Got the
> deer
> > in the headlights look and after explaining what it was, and after
> listening
> > to a string of cuss words, I learned that their company had no such
> device
> > and they had no idea such a thing even existed.  If they had to install a
> > pole anchor where they could not get the truck, they had to put it in my
> > hand with a long bar and muscle just like us.
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> >
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