RTK Is OK For Local Elevation WorkFlyin Solo,I'm always amazed at the vertical accuracy of modern robots. I've seen S6's that could radiate elevations...

Willy,I'm absolutely anal about rod heights and instrument heights. And yes, the 5700 is lashed onto a fixed-height rod. The Active Prism I use for th...

dmyhill,"Yeah, us surveyors jump out of our trucks for two minutes, look around, get off early, and get paid a lot of money!"That's why I'm trying to ...

RTK Is OK For Local Elevation WorkThanks, Paul. I just looked at the map of CORS stations. You're right--there's no shortage of 'em.Dave

Willy,I always try to build a little redundancy into anything I do--overlap a couple of points, take a shot on yesterday's work, etc.Thanks for the GP...

JT,"When I was in school...there wasn't any GPS"Hell, when I was in school, I don't think that electricity had been invented yet.And not only am I try...

Bill,"...whether the tilt of the geoid is significant in 3 miles..."It's bad enough that I've got to worry about RTK inaccuracies. Now I'll also lose ...

Tom,"I download the data from any of their close base stations and process the data."So that's kinda like a mini OPUS? I'm going to file that one unde...

Thanks, Mark. I'm on it. Good link.Dave

Tom,Using company tools; they're not mine. No spares and no money for anything not absolutely necessary. The water district bases are a Godsend when I...

Tom,"...while the units cook."Units? Ha ha! I've got ONE limping 5700 with iffy batteries. And my knowledge of GPS is about on a par with my equipment...

Mark,"Far greater concern here is your understanding of the datums and processes involved."Yup. Agreed. That's why I'm here. This is the best place to...

Radar,The "final" civil drawing will, of course, have to include the information of which benchmark the project is based on. I don't have much experie...

Robert,Thank you. A well put clarification of concepts.Dave

Dave(A good name),"Who cares and why worry about it for a building lot?"That was my first thought and the reason I wanted to save my employer the expe...

Bill,"The biggest issues I know of would be which geoid model your software is using, and the generally poor repeatability of vertical measurements wi...

dmyhill,"Are you a licensed surveyor?"No sir. I'm a carpenter. I work for a living. 🙂 I know what Geoids, Horizontal Datums, and Vertical Datums are...

Muncle56,Are you looking to make COGO Points or Spot Elevations? Spot Elevations won't have point numbers or descriptions, just an elevation. As for t...