For those who are installing new guy anchors, there were some posts here a
while back about coating the rods with roofing tar/cement prior to burying
them. I coated mine all the way from the cement slab to the equializer
plate. Still looking good, but it's only been a couple of years.
73, Dick WC1M
> -----Original Message-----
> From: K7LXC@aol.com [mailto:K7LXC@aol.com]
> Sent: Friday, June 05, 2009 7:41 PM
> To: towertalk@contesting.com; Barockteer@aol.com
> Subject: Re: [TowerTalk] T Guy Anchor Inspection
>
>
> In a message dated 6/5/2009 5:18:01 P.M. Central Daylight Time,
> towertalk-request@contesting.com writes:
>
> > As one of those things I was going to do when I got a 'Round Tuit',
> today I started inspecting my guy anchor rods. (Tower is 78' Rohn 45G,
three
> guy levels; installation 16 years old). I excavated the first rod and
found
> good news and bad news. The good news is that it is structurally sound
> without extensive corrosion. The bad news is that has no galvanizing left
and
> has a light coat of rust. Does anyone know of cathodic protection
appropriate
> for ham tower use? I can find commercial systems on the 'net, but they
> cost ~2K$.
>
> Hi, Tony --
>
> Good catch on the rod! Dave Leeson, W6QHS, had a commercially
> overloaded 45G at his 140 MPH QTH that fell down when the below ground
> anchor rod
> rusted through. It could've been so easily avoided. Oh well.
>
> I would just treat it like any other tower member - wire brush it off,
> primer it and put some good cold galv spray paint on it. A couple of
coats
> for
> sure. Just do this every 10 years and that's all you'll ever have to do.
>
> You could also consider a commercial coating that would encapsulate
> the anchor rod in the area of interest. Older towers that have lost their
> galvanizing are sometimes epoxied - another long lasting product. The key
> here
> is surface prep. Use TSP (there's another one - some sort of solvent I
> think) and just do an over-engineering-type job on it and you're good to
go.
> (You do know how to over-engineer, don't you Tony?) (Just kidding. Tony
is a
> very good and intuitive engineering type.)
>
> Don't have anything to share about the cathodic protection and I'm
> sure you're right about the price.
>
> Cheers & GL,
> Steve K7LXC
> TOWER TECH
>
>
>
>
> **************Mortgage rates drop to record lows. $200,000 for $1,029/mo
> Fixed. LendingTreeR
>
(http://pr.atwola.com/promoclk/100126575x1222653866x1201461148/aol?redir=htt
p
> :%2F%2Fwww.lendingtree.com%2Fborrower%2Falliance%2Ffrom.as
>
p%3Fwhereto%3Dpromopagev3%26promo%3D00279%26loan%5Ftype%3D2%26source%3D28895
> 60%26esourceid%3D2889560%26800num%3D1%2D800%2D289%2D3915%26AdType%3D2)
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|