Carlson SurvPC Users
We are running an RT4 with Carlson SurvPC software. After the recent update to 7.12 we had some trouble with vertical checks on a couple of jobs. We realized that with the update came a new geoid model that wasn’t previously provided. NorthAmerica_NGS2022.gsb That by itself wasn’t a problem but the dc defaulted to using it. So on jobs that were surveyed under the 2018 model we were missing verticals at approx 3.20-3.30 feet or around one meter. Not really sure why unless the new model shifts elevations in my area about one meter. Just throwing this out there for anyone using this to be aware of.
Edited to add, that I’m no longer sure that the dc defaulted to this geoid on its own. It’s possible that it was accidentally chosen because it appears to be the latest and greatest. Either way might be a good idea to make your crews aware.