Was send a bunch of positions for drill holes, imported them into my field file and the crew chief went out to locate them. Sent the data to the company (young, fresh out of college-what do they teach there anyway?) geologist and get back the "there is some problem, your points aren't very close".
LOL
How many times have I heard that one:-D
Where does the handheld come into play?
Have heard the "your points are off" comment more times than I want to think about. It was always the surveyors fault. Until they were set straight. Never an apology though. Guess they can't handle sarcasm very well.
[sarcasm]Is it the fresh out of college handheld user? Or is it the plucked off Google earth stake out coordinates?
[/sarcasm]
Do the points fall where they need to be according to the plan?
well....did you ever go out and restake them in the right place?
> How many times have I heard that one:-D
And if you've heard that a lot, maybe you need to tighten up your work....
They needed us to locate about 30 holes scattered in some rough country, still I can't believe my guy got it done in one day, but he did!!
They gave us handheld points collected after drilling, I plotted them and my guy went out and located the holes, the geologist was there to "show" him around, although, he knows the area better than anyone except the rancher.
The handheld points varied from 10 to 120' from our locations, pretty typical from what I've seen over the years, the geologist thought they would be within a few feet.....they always do...;-)
Misread your title
Thought it said: Got lovehandles
The mind is a terrible thing to waist, er, wayst, er, weighst, er, waste.
I thought that was either a terrible question to ask or a statement to make about one's physique.
Misread your title
yeah after I sent I thought, you know that might come out wrong, but not quite what you saw........LOL
Misread your title
Yea those hand things are not like the real thing.
[sarcasm]I think your data must be wrong - every time I've seen a geologist on TV, they have guaranteed that their GPS measurements are good to 1 millimeter. [/sarcasm]
This may be a repeat but it's a good one:
In court, adverse possession claim based on logging several decades ago. The 'surveyor' (he is the son of a very well respected surveyor and the nephew of another well respected surveyor, but he never got his license) and the engineer located stumps with a handheld. I tried staking some out with RTK in the woods (not expecting perfect results, I just wanted to see some stumps most of which were rotting under little mounds of moss). I was baffled because I could not make sense of their locations, then I found out they used a handheld.
The real punchline came when they brought the unit into court and tried to give it to the judge to review. "This is what we used". The judge stated he had no idea what he was looking at, then asked me (I was not on the stand) what sort of quality could be expected from such a unit.
> They needed us to locate about 30 holes scattered in some rough country, still I can't believe my guy got it done in one day, but he did!!
>
> They gave us handheld points collected after drilling, I plotted them and my guy went out and located the holes, the geologist was there to "show" him around, although, he knows the area better than anyone except the rancher.
>
> The handheld points varied from 10 to 120' from our locations, pretty typical from what I've seen over the years, the geologist thought they would be within a few feet.....they always do...;-)
I use RTK to stake out drill locations. I then load the coordinates into a garmin handheld to find the flags when I am in the drill rig. They are never spot on but having done literally tens of thousands of them I don't think I have ever seen the handheld be more than 20' off. Most the time it is in within ten feet. I even have the handheld mounted in the cab of the drill partially under the metal roof and it still gets me around.
but you know what you're doing;-)
some of them are about 10', a few 40-50 and then the 120' one.
Who knows what they are doing out there, maybe they sent some preliminary locations and drilled them somewhere else.
Not too important, they all got tied, these are geologic holes, no pipe, just ground shots near the hole
You can improve the handheld accuracy by adding an antenna that will run up on a 25' rod, helps a lot if in the woods, the antennas help reduce multipath solutions.
If your points were in the wide open field, yes the handheld should have produced sub meter or even subfoot accuracy if operated properly.
I have done a ton of testing on this subject and even wrote a few whitepapers on it back in the late 90's
equipment performs to specs until multipath
Just received a call today. Well driller drilled a well on the wrong property. They need goog coordinates to make sure they don't do it again. :-S How much of this stuff goes on that we don't even know about.
Pablo B-)
Did they hit water?
Yep,
It was on family owned trust lands, S1/2 of Section in 4 parts with no fences etc.
Pablo
Handheld + GIS + GCBD = what could possibly go wrong
Now it gets better, LOL.
The driller figured out what was wrong and asked if I could send the data on the "correct" coordinate system.
Funny!!!
Oh well, who did they think set up the entire control network?
The mapping company did 200 sq miles of mapping on that system, I figured I'd better be on it;-)
