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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