Since it's a guyed tower you probably won't have any problem, but the
reality is that your legs are only anchored by a few inches of bolt
through a brittle piece of stone ... one that's likely to be subject to
vibration and force from your tower. It's not likely to sink and it's
not likely to shift sideways, but I'd recommend you never be tempted to
mount a free standing tower of any size to those legs ... I don't think
you could count on it not pulling up.
73,
Dave AB7E
On 1/3/2014 8:36 PM, Hans Hammarquist wrote:
Gentlemen,
I don't know if i did something very wrong but I started but putting a large granite slab
(6'x5'), 5 feet down where the tower was going to be. I had 12 holes drilled in the slab
and attached 6 angular irons, two screws per iron to the slab. I then place three
"Sonar" tubes over the irons, two irons per tube and filled the tubes with
cement. The tower legs were attached to the irons, squeezed in between the irons. (I put
a few sections of the tower up, leveled them very carefully and then drilled holes for
the bolts through the irons and the legs.
The tower is anchored in the granite slab and the slab is secured with dirt. (I
added some scrap iron to that dirt, just to make it heavier.) I have provided
the link to photos of the work many times and am doing it again.
https://www.facebook.com/media/set/?set=a.10150198503693539.328964.579753538&type=1&l=b4a8463457
Did I do something stupid? Please tell. I used a lot less cement that way.
Hans - N2JFS
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