On Tue, 28 Apr 2020 06:02:07 -0700 (PDT), trader_4
wrote:

On Tuesday, April 28, 2020 at 8:46:59 AM UTC-4, TimR wrote:
So if it is infinitely strong, it has the same effect as shortening the pole by 5 feet. I'm skeptical they do much. I haven't seen any in my area, but they're pretty quick to replace poles on schedule.

I think the real effect is that if it's infinitely strong, it replaces the
deteriorating lower section of the pole, including the part that's starting
to rot in the ground. I would expect there would be data showing it works.
It would be stupid for utility companies to be doing it on a wing and a prayer.
It still must cost a considerable sum, but much less than the cost of a new pole.

I was here watching them do the one near my house. They just drive the
guardrail metal down with a power hammer and strap it to the pole.
Then nail on the cap. The whole process took less than a half hour.
These guys probably do 10 or more a day. It took them almost as long
to do the surveys to see which poles needed it. They had to dig and do
some physical testing of the wood for that. The guy said they only
look at the first foot or two because that is where the problem is. A
few feet down the poles are solid.