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Some utilities vary the insulator angles. I'm working with a utility right now that uses 45/45 degrees for tangent towers and 45/70 for angle towers between 6 and 22 deg. Anything over that gets a dead-end. If the weight span is too small they add weights to the attachment (up to a few thousand...

Don't forget that the wire tensions are always there. And unless you know the exact location of the nearest tower/pole, you'll need to vary the angle on the conductor tension forces. If the "design" wire tension (at whatever temperature is required by the utility) is too conservative, remember...

I got the answer from a different source, so I'm following up here: I won't mention the source, (he may not want his name out here), but he's reliable.

I've specified #18J rebar many times for tubular-steel pole anchor bolts. I know they are #18 "Jumbo" bars, and as I understand it they are rolled from a slightly larger stock bar. The deformations at the end are then turned down/shaved off back to 2.25" diameter, and the threads are rolled into...