Hi Great video, one question through. If you use all 5 control points, what do you do regarding the level? as we all know that GNSS level has more tolerance than in the x,y plane. Especially when you then traverse around with an EDM. What do you do? Thanks.
Hi @petertips2686 - I am not sure I understand your question. If you use x,y,z for all five (or more) control points you should be good to go. To tie verticals down as tight as possible you can request the surveyor run a level loop to tighten them up. At the least, we like to see them use a robot to set your control. The length of time you spend shooting in each point matters, too. Recommendations vary by manufacturer, but always spend at least 30 seconds on each CP. We usually occupy the point for two minutes to better average out the error. If you have a "bad" control point your GPS system should show you excessive error on that point (but you will need at least 4 shot in before it will display vertical error). Keep in mind that some variance and tolerance stack up is inherent in GPS.
Hey @richarddoloja6119 - This vid is only intended as general info. The best place to start with questions about your system is your supplier. They'll know exactly what you run and how to help.
12:29
Barstool analogy perfect!!
Figured the audience would relate!
This was very helpful understanding the importance of site control best practices. Looking forward to future videos, keep up the good work!
Thanks Chuck MM. Good luck on your projects.
Hi Great video, one question through. If you use all 5 control points, what do you do regarding the level? as we all know that GNSS level has more tolerance than in the x,y plane. Especially when you then traverse around with an EDM. What do you do? Thanks.
Hi @petertips2686 - I am not sure I understand your question. If you use x,y,z for all five (or more) control points you should be good to go. To tie verticals down as tight as possible you can request the surveyor run a level loop to tighten them up. At the least, we like to see them use a robot to set your control. The length of time you spend shooting in each point matters, too. Recommendations vary by manufacturer, but always spend at least 30 seconds on each CP. We usually occupy the point for two minutes to better average out the error. If you have a "bad" control point your GPS system should show you excessive error on that point (but you will need at least 4 shot in before it will display vertical error). Keep in mind that some variance and tolerance stack up is inherent in GPS.
Well articulated thanks a lot for the
wonderful insights
Thank you, glad it was helpful.
Really helpful information,
Glad it was helpful and thanks for letting us know.
Please could you discuss how i can calibrate my gps to multiple control
Hey @richarddoloja6119 - This vid is only intended as general info. The best place to start with questions about your system is your supplier. They'll know exactly what you run and how to help.
POWERFUL
Good
good stuff
Thanks, Kellen. Appreciate the feedback. Hope it helps you out.