[TowerTalk] H-beam for elevated guy
Dan Cisson
n4gnr at windstream.net
Wed Feb 12 10:37:39 EST 2014
Steve,, I just put in an elevated anchor for 151 ft of 45 with a LOT of
loading for antenna.....
I twisted in a 30 inch hole with an auger from a Bobcat attachment. This
hole was 6 ft deep. I poured 3000 mix concrete up to the top. I went to a
local scrapyard, and found a huge I beam. It is 18 inch X 10 inch and 1/2
inch
thick.,, and 12 ft long. 6 feet is in hole, 6 feet up.
The "I" is in line with the direction of the load-which is the guy
wires....I have the tower guyed at 38 feet, 76, 114,
and 144. I thought I may have to back guy this beam,, but it is SOLID,, I
have the guys pulled quite tight. I am not back guying it at all..The key
thing here is go with extreme overkill. If you put in an elevated anchor,,
MAKE SURE its way too big, and you will have assurance of the installation,
and know there is not a weak link in the anchor. Another time,, I used a
section of railroad track,, its ungodly heavy,,, but it does not budge
either...Good Luck....Dan N4GNR
----- Original Message -----
From: <K7LXC at aol.com>
To: <towertalk at contesting.com>; <kr7x at arrl.net>
Sent: Wednesday, February 12, 2014 10:00 AM
Subject: [TowerTalk] H-beam for elevated guy
> Howdy --
>
> I'm trying to get an idea of a good size for a 6' elevated guy anchor
> (with 4 feet in the ground and it'll have a backstay). It's for 100' of
> 45G. I was thinking of using an 8" flange length. That might be enough
> since
> it'll be backguyed but since I'm not an engineer, I was looking for some
> feedback on this. TIA.
>
> Cheers,
> Steve K7LXC
>
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