A licensed surveyor not far from me proudly shares his GPS "control" coordinates and elevations with other surveyors. I was grateful for the info.... until I started finding them. Urban canyons, canopy everywhere. One point is 1' from the door of a building and UNDER the six foot building overhang. How do I even approach the issues with this guy? I'd like to keep from saying what first comes to mind...
Me. "What's the difference?"
T.C. Carroll "It's the difference between right and wrong!"
Maybe he's running a Javad unit. I hear those things can get a position from within a submarine located 60' under water. :p In a kelp forest.
I guess you got what you paid for it...
Maybe he's Dr. Evil and this is his plan for taking over the territory. Freely give out bunk control points to anyone who will take them and keep the competition chasing their tails. Wasn't someone fishing for Survey based murder mystery plots a couple weeks ago???
Stacy Carroll, post: 443191, member: 150 wrote: A licensed surveyor not far from me proudly shares his GPS "control" coordinates and elevations with other surveyors. I was grateful for the info.... until I started finding them. Urban canyons, canopy everywhere. One point is 1' from the door of a building and UNDER the six foot building overhang. How do I even approach the issues with this guy? I'd like to keep from saying what first comes to mind...
But he gave you coordinates to 16 decimal places so they MUST be correct.
Andy
I saw a gps base set up about 1/2 a yr ago... By the rd. In an urban canyon.
It works.... But adds MORE positional uncertianty.
Why do that?
N
Andy Bruner, post: 443241, member: 1123 wrote: But he gave you coordinates to 16 decimal places so they MUST be correct.
Andy
Well, yeah, the coordinates are awesome. (You might need to move the monument over a half a foot or so to get on the coordinate, however)
carried them out to the thousandth of a foot.
How good are the coords?
Seb, post: 443292, member: 7509 wrote: How good are the coords?
1' from a building and under a canopy? They are no good.
There is random H and V error so no vector checks both H and V. Some are close in one and not the other. The one under the building overhang is 1.4' off vertically but within 0.15' horizontally.
Me. "What's the difference?"
T.C. Carroll "It's the difference between right and wrong!"
Cameron Watson PLS, post: 443229, member: 11407 wrote: I guess you got what you paid for ....
Perhaps, but this guys clients did not.
'Horseshoes and Handgrenades Surveying Ltd'.
Just because I'm paranoid, doesn't mean they aren't out to get me.
Stacy Carroll, post: 443320, member: 150 wrote: There is random H and V error so no vector checks both H and V. Some are close in one and not the other. The one under the building overhang is 1.4' off vertically but within 0.15' horizontally.
And you know this because you checked it with your GPS?
😉
N
Sounds like he needs some peer mentoring and then if no sunlight at the end of the tunnel you have two options: live with it (making our profession continue to look like button pushing cheap labor and 'enjoy' the future clean up of shoddy work for no compensation when you work is impacted by his) OR turn him in to the licensing board (if you can show a violation). We as a profession need to stop accepting this behavior.
Just my 2 cents ....
The coordinates are very good, they just might not coincide with where the monument is.