I started a new survey and as usual things went south before I even got started. I've got my control in and ready to begin the hunt. I know the POB tie is correct and the plat fits into the outer boundary. But the roads are not where the plat says they are.
Here is the plat kml'd out to a GIS.
I'm hoping to find markers that fit over the road and not where the plat says they should be. I've talked to the original surveyor from 12 years ago and he says as the plat does that all the lot corners where marked with iron pins. So the question is why does it need to shift about 80 feet west to fit over the roads.
So for all you original survey fans or math fans, if I find the corners 80 from from where the official plat says they are, do I accept them? I hope I do find them 80 feet off or we really got a mess here.
My guess is the roads will fit at the plat distances, every thing is okay and the only thing wrong is...
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> Here is the plat kml'd out to a GIS.
They don't always fit. I hope for your tomorrow, that is all.
Yeah the kml's don't always fit and there is some slide for sure. But the control points which I know where they are on the ground and the photo look spot on. I've drove down roads taking shots with a mag mounted GPS antenna, processed them through and kml'd them out to the GIS and they go right down the road on the map. I'm amazed at just how good these aerial orthophotos (or whatever) have been processed and inserted into the GIS. I think it's within about a meter in my area.
Describe the POB and first course.
Also look for a transposition (maybe even a double transposition) in the E-W line calls leading up to the first point of error.
Paul in PA
LR...
Paid to play will make your day...Gotta love it!
Pablo B-)
You must be an engineer. 😉
I see this all the time, sometimes it boils down to coordinates published in International feet vs. US Survey Feet. In my area that difference is about 25 feet in the east/west direction. We all know GIS maps CAN'T be wrong.;-)
UPDATE - LINE SHIFT
The shift exists about 77.5 feet. Nothing wrong with my kml depiction. The kml before the search actually saved me a headache, alerted me to a potential problem.
I found the POB of the subdivision marked with a bar and cap - subdivision surveyor. The plat tie from a section corner is South 1336 feet and East 1320 feet. Measured is South 1345.8 feet and East 1242.7 feet. And it does create an overlap of title which has come to light but I don't think they really know the cause. The overlap dispute has been recently handled by an easement grant to use the overlap area.
So adjusting to the actual POB I find almost every corner I looked for but many along the roads had become buried and a few bent from roadwork but still in the ground.
So I need to do a lot line adjustment which requires a plat amendment in this county. I'm thinking about how to handle it. My lots don't cover any of the title overlap. I really don't want to stir up the hornets nest. The original markers are gold as far as I'm concerned. I'll probably just show the record and measured change for the POB tie (with and explanation note) and then go to my lots from there. Once adjusted to the actual marked POB I found the corners within tenths of a foot.
Is there anyone who thinks the lots should be put back to the record, moved almost 80 feet, cause the roads to be in the lots and a couple of buildings over the lines? How many think that quit-claim deeds need to be passed around (there is a title problem)? We are looking at an almost 80 foot bust from the plat (2001).
It Feels Good To Get It Right...
Correct the tie and congratulations.
Paul in PA
