[TowerTalk] Screw anchors

[K0DAN]

If you have reactive soil, do NOT put screw anchors directly in the soil 
(but rather anchor them in concrete). Over time, they WILL react to the 
soil, will lose their strength, and will eventually fail. If you doubt me, I 
will send you some pix of a failed screw anchor which resulted in the loss 
of a 70+ foot tower plus the antennas and feedlines on it. These were good 
heavy duty screw anchors put into Missouri clay, and I was a assured by a 
noted Texas vendor that they'd be great. They lasted about 10 years and then 
failed during a modest (50 MPH) wind storm. Don't make the mistake I 
did...save yourself some grief, spend a little extra, do your research, 
check on your soil conditions, and follow the mfgr specs.

73
k0dan


-----Original Message----- 
From: Cqtestk4xs at aol.com
Sent: October 29, 2011 08:30 PM
To: TOWERTALK at contesting.com
Subject: [TowerTalk] Screw anchors

For those who are finicky about screw anchors...If you don't  want top
screw them in, there is no reason why you can't pour some concrete and  then 
put
them in it.  Around here the price of screw anchors (big ones, 1"  rod and
close to 8 ft long) are a fraction of the cost of Rohn anchors.

You don't like the "knuckle head" on them?  Get you  local welding shop to
fabricate plates from plate and drill the holes and weld  them on after you
grind the knuckles off.  I came out spending about half  of what I would
have spent for the Rohn stuff..and these are much  beefier.

Bill KH7XS/K4XS

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