[TowerTalk] Fwd: Re: stretched EHS

[kq2m at kq2m.com]

Steve,

You might want to consider another possible solution....
I don't know how much wire is involved - but the entire length of EHS 
did not stretch - I would cut off maybe 15' or so on either side of the 
stretched area, connect the cut-off ends to an insulator with preforms 
on each side, and then add another piece of EHS with insulator and 
preforms as necessary to make up the required overall Guy length.

73

Bob, KQ2M


On 2022-10-12 18:23, Keith Dutson wrote:
> I would replace the wire.  EHS is not stretchable, so no doubt it was 
> damaged.
> 73, Keith NM5G
>     On Wednesday, October 12, 2022 at 06:04:49 PM CDT, Lux, Jim
> <jim at luxfamily.com> wrote:
> 
>  On 10/12/22 3:24 PM, Steve Maki wrote:
>> I should have mentioned that the guy wire in question is ~330' long,
>> and elongated by ~6". I know - it's amazing that it didn't break.
>> 
> It's a fair ways from yield (fy) to failure  (fu) for steel. I don't
> know the alloy here, but looking over a table, it looks like fu is 10%
> higher than fy for most of the "high strength" steels.
> 
> 
> EHS 3/8" seems to be 15,400 lb breaking strength.
> 
> 
> 
>> -Steve K8LX
>> 
>> On 10/12/2022 2:29 PM, Steve Maki wrote:
>>> I have a question for the materials crew here. I'm writing up a job
>>> report.
>>> 
>>> Our crew went to a site where a huge tree had fallen on the two lower
>>> guys of a 360' tower. We carefully (well as carefully as we could)
>>> slacked off & disconnected one wire at a time, threw it over the
>>> tree, and reconnected it. At that point the site was ready for the
>>> tree crew to come.
>>> 
>>> It was obvious that one of the wires (3/8" EHS) had stretched a few
>>> inches. There were enough unused threads in the turnbuckle to enable
>>> a good snug wire again.
>>> 
>>> I'm recommending that the guy wire be replaced, but was wondering how
>>> much strength in roundabout numbers is lost in this scenario?
>>> 
>>> TIA
>>> 
>>> -Steve K8LX
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