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Re: [TowerTalk] UST HDX589 crank-up tower base on rock?

To: Ian White GM3SEK <>,
Subject: Re: [TowerTalk] UST HDX589 crank-up tower base on rock?
From: Joe - WD0M <>
Date: Thu, 16 Feb 2006 09:48:55 -0700
List-post: <>
Hi Ian,

Sounds like a very reasonable way to proceed.  I 
doubt you'll have a big problem using the epoxy 
approach.  I used a material called "Rockite" - a 
cement product used to locate heavy machinery on 
concrete floors - to put my re-bar in place in 
the holes I drilled into the bedrock for the 
tower base.  It worked very well.  Not sure of 
its availability in Scotland, though.  Your 
problem sounds like what I experienced with my 
tower installation.  You can see how I did it at:

Click on Ham Radio, then Tower Project.  We just 
had a major wind storm last night - 50 mph plus - 
and the tower still stands, no problem.  It's 
been up for about two years, and we've had winds 
over 70 mph here in the Rocky Mountains.  Your 
verticals should stand up with no problems by proceeding as you planned.



At 09:35 AM 2/16/2006, Ian White GM3SEK wrote:
>Steve wrote:
> >    You can rent a rock corer to drill the  appropriate holes for the
> >factory anchor bolts - or have someone come out and  do it - and then
> >you can epoxy them in or use rock expansion bolts - or  both. It'll be
> >real strong.
>"Or both"... interesting idea - has anybody here used it?
>On a smaller scale - five posts for verticals, rather than a tower -
>I'll soon have 20 of these anchors to put in, so would welcome any and
>all suggestions.
>It's impossible to dig post-holes here. We tried a little harder with a
>backhoe, but at all five locations it hit solid rock only a few inches
>down. The best it could manage was five shallow scrapes, so I'll now
>have to level each of these back up to grade with concrete, and then use
>bolt-down sockets for the wooden posts. My plan had been to drill
>half-inch holes right through the concrete and some way down into the
>solid rock, and then use half-inch threaded rods anchored by epoxy (or
>similar... whichever kind of resin works best in damp rock).
>Does that make sense, to the folks who have used epoxy?
>73 from Ian GM3SEK


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