[TowerTalk] Rohn 25 Guying

Sat Dec 26 20:34:55 EST 2015

 I responded to this thread B-4

 The   tree can be used but IMO will not fly with a building permit application.

  The tree anchor  with the belly band ( around the tree with a loop of EHS)  is a bad idea.

the tree grows around the back side  taught wire  making it impossible to determine  it's condition .  the lag screw !! ymmv !!!!

fixed eye anchor https://www.macleanpower.com/products/item.asp?ITEM_ID=2040

There are a few open screw thread each end with optional end choice.

as for drilling  there a drills  and extension  that will DRILL completely  THROUGH the tree  NOT around. 

But  this still will not pass any building  permit situation . 

Wayne W3EA  

> To: towertalk at contesting.com
> From: K8RI-on-TowerTalk at tm.net
> Date: Sat, 26 Dec 2015 18:21:09 -0500
> Subject: Re: [TowerTalk] Rohn 25 Guying
> 
> My observations:
> 
> Even large trees are more prone to wind movement and damage than towers. 
> Large Redwoods excepted.
> Mature trees like Oak and Ash appear to do well. Large, mature Oak 
> normally have a long life. Willow trees? Not so much from a relative 
> standpoint.  The Willow is also flexible.  There is large willow tree in 
> my neighbor's back yard. Their back yard abuts to the S side of my back 
> yard. I'd guess that tree is close to 4' across (diameter).  A few years 
> ago we had a severe thunderstorm come through with a large bow echo 
> leading the storm. I was watching that tree from my garage's back door. 
> As the wind increased I could hear that tree groaning from close to 150 
> feet. The groaning kept getting louder and that 4 ft trunk was taking on 
> a substantial lean. The groaning increased to sounding like a person in 
> pain.  With a loud loud snapping sound, that trunk appeared to be 
> leaning about a foot only 4 or or 5 feet off the ground when the wind 
> abruptly quit. Just as I thought it was all over  for that tree, the 
> tree snapped upright. It's awe inspiring to see a tree that large, bend 
> that much.
> 
> The Oak has a good root system holding it.  The Ash?  I don't know, but 
> a large, mature Ash can be killed in a week by a relatively small bug, 
> The "Emerald Ash Borer".  There are few trees left from huge stands of 
> Ash we had 20 years ago.  I had 5 huge Ash that I used for antenna 
> anchors. Those are all gone. There is one large Ash near the edge of the 
> woods on the N side where I have a lag bolt with a forged eye to anchor 
> one of my sloapers.
> A mature hardwood will not grow larger in diameter, BUT, it may see a 
> lag bolt, or through hole as damage and form (I believe it's called 
> bole) to cover the damage. Just pay attention and replace the lag bolt 
> with a longer one if necessary.  This applies to most trees and 
> particularly trees that have not reached maturity. There is no excuse 
> for the lag bolts becoming enclosed, or overgrown. It's a slow process 
> and can be prevented with a little attention.
> 
> Many trees live a relatively long time, but there is no guarantee.  
> Disease, bugs, and nature ( wind, lightening, drought, and even low 
> temps) can end that long life prematurely and sometimes,quickly.
> 
> 73
> 
> Roger  (K8RI)
> 
> 
> On 12/26/2015 Saturday 8:50 AM, Patrick Greenlee wrote:
> > I have used trees for support but not precisely for 50 ft Rohn 25 
> > towers.  Avoid "girdling" the tree.  Do not wrap cable or other 
> > ligature tightly around the tree.  use material like an old bike tire 
> > or whatever to spread the load so the attachment cable or whatever 
> > does not dig into the tree or over a few year's time become embedded 
> > in the tree through new growth.  The other tip that comes to mind is 
> > to attach to the tree as low down toward the ground as practical  so 
> > the tree's motion in a wind is not sufficient to cause problems.
> >
> > I'm sure there are things I am overlooking but with luck other 
> > respondents will cover the gaps I left.
> >
> > I hope you had a very merry Christmas and wish you the best in the 
> > coming new year.
> >
> > Patrick        NJ5G
> >
> > On 12/25/2015 5:05 PM, Tom W1ALZ Nicholson wrote:
> >> Has anyone used trees as guy anchors for a 50' Rohn 25 tower?
> >>
> >> If so what was your method of attachment?
> >>
> >> Thanks
> >> Tom W1ALZ
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> 
> -- 
> 
> 73
> 
> Roger (K8RI)
> 
> 
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