Correct, it is a Universal Aluminum tower. Self-supporting it should be able to
take up to 85 mph wind. With the guyes it is able to take 135 mph, something
that made it easier to convince the local authority to give me the permit. (No,
I am not planning to take the guy wires down, at least not permanently.)
The bolts holding the angular irons onto the granite plate are "through hole',
there is a bolt head with a large washer underneath the granite block/slab. I
put a pile of cement right underneath the spot there the bolts stick through,
just to reduce the corrosion risk. I don't know if it will work. Many, in the
far future, time will tell. (I hope not the be around at that time.)
Hans - N2JFS
-----Original Message-----
From: john <john@kk9a.com>
To: TOWERTALK <TOWERTALK@contesting.com>
Sent: Sat, Jan 4, 2014 12:21 pm
Subject: Re: [TowerTalk] Tower base
It appears to be a Universal self supporting tower with a set of four guy
wires added to the top. I would not say it is overkill.
John KK9A
To:towertalk@contesting.com
Subject:Re: [TowerTalk] Tower base
From:"Roger (K8RI) on TT" <K8RI-on-TowerTalk@tm.net>
Date:Fri, 03 Jan 2014 23:01:48 -0500
On 1/3/2014 10:36 PM, Hans Hammarquist wrote:
Gentlemen,
It's a guyed tower. The base only has to keep it from sinking or sliding
sideways.
If anything it's probably overkill.
73
Roger (K8RI)
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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