I forwarded a copy of Hector's email to the tower owner along with a
copy of the Rohn hardware page that has their shackles and a note
suggesting that he change out that improper hardware (I also recommended
that he subscribe to TowerTalk).
73, Mike W4EF/6
On 4/22/2010 6:31 PM, Steve Maki wrote:
> Roger (K8RI) wrote:
>>> Think of them as mechanical fuses ;)
>> They certainly are the weakest link in the system. OTOH maybe I
>> shouldn't say that without seeing the other ends of the guys.<:-)) I
>> guess I'm a bit puzzled as to why put those rings in there in the first
>> place. The links above them are probably about 1200# which is still way
>> under even 3/16" EHS. It looks like he's using the 6000# test
>> Phillystran...with 1200# links?
> Well, once they decided to use the screw chain links, they needed
> something that would fit into them, which the thimbles would not do.
> This part of the install was not planned very well, but the rings, which
> appear to be 1/4", are a little better than key rings.
> Next time they will undoubtedly will use a shackle right there...
> -Steve K8LX
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