I use hardware that collects RTK corrected GPS coordinates for pole line engineering, and even with RTK you can get some pretty wild errors. One building in a

I use hardware that collects RTK corrected GPS coordinates for pole line engineering, and even with RTK you can get some pretty wild errors. One building in a small town with a metal roof and metal siding caused the reported location of the adjacent pole to be more than 10 meters off. I ended up manually correcting the coordinates via the satellite view on the map. I've seen cases where inaccurate positioning of poles by just 60 centimeters is enough to make pole loading analysis fail a pole.