I have a question about gps vertical accuracy. I am an inspector on major highway projects in California. I work with alot of surveyors as they set grade stakes. Typically the surveyors will use GPS for setting the stakes and hubs in the horizontal position but follow up with a level or total station to set the vertical. They have told me that GPS is not that accurate in the vertical. Is that true, and if so why? Also how precise is the total station in the vertical since it uses trigonometry for angles.
Red Flag Submitted
Thank you for helping keep Eng-Tips Forums free from inappropriate posts. The Eng-Tips staff will check this out and take appropriate action.
Reply To This Thread
Posting in the Eng-Tips forums is a member-only feature.
When was the last time you drove down the highway without seeing a commercial truck hauling goods?The ubiquity of these machines underscores the important roll they play in modern commerce. Download Now