I used the same type as the utility companies. They are a lot cheaper if you
buy them from a utility supply house.
Anyhow I put them in with the hep of a sledgehammer and a break-iron. We were
two to do it. You turn the helix anchor as far as you can. then you hit it a
few times with the sledgehammer and continue turning. The idea is that the
screw-anchor should be set in "undisturbed soil" to get maximum strength.
de N2JFS - Hans
-----Original Message-----
From: KD7JYK DM09 <kd7jyk@earthlink.net>
To: towertalk@contesting.com
Sent: Thu, Nov 17, 2022 5:52 pm
Subject: Re: [TowerTalk] Anchoring
"No one has mentioned something else that would work. Get your wall
strength/rigidity, then, fill it with concrete. Something to consider."
The utility pole anchors I used, the same the power and telephone
companies use, are rated for ~16 tons of pull when set in just dirt.
I don't have the monster arm-mounted hydraulic auger they use to set
mine, so I dug a hole about 3'x3', and four feet deep, then set the
angle, and back-filled with a mixture of crushed 2" rock I had from a
previous project, some large rocks, and bound them all together with a
slurry made of the removed material, tamping as I went along. Nothing
special, just stuff I had on the land, which also cleaned up a lot of
rocks I had been kicking around for years, so win-win.
I found it far more practical, and a few thousands of dollars cheaper
than obtaining several cubic yards of concrete and a pumper truck with
overhead crane to get to the holes.
The installation also has the advantage of being easy to service by hand
with garden tools, should there be an anchor issue in the future. No
bulldozers, no dynamite, no work crew, just me, a hand trowel, and some
spare time.
Kurt
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