[the Men Anonymous pledge, or the Man's Prayer] I'm a man, but I can change, if I have to, I guess. -Red Green

delta 37 09 works out within reason

Additional information that would be useful:-stationing on the centerline points-alignment information-coordinate information-are the references cross...

The external for a 10000 ft radius curve with a delta of 20 deg is 154.266 ft.The external for a 9999 ft radius curve with a delta of 20 deg is 154.25...

Every job anyone works on is grid. Every job has a scale other than 1 in reality. Some just assume their grid scale is 1 and everyone is happy. But wh...

Is there any other profession that insists the earth is flat?

When is a foot not a foot?Every time you plumb the chain or move the total station you create a new horizontal plane perpendicular to gravity. As has ...

Just say what needs to be said

Right. Let's discuss important issues like capping or not capping found irons.

I question who is being short sighted. We live in a GIS world now. Deal with it.

Z error estimatesH error half of Z errorRTN - 1 - 3 epoch observation + - 0.14 ft in Z RTN - 5 - 3 epoch ave. observations + - 0.05 ft.in Z __________...

Good post Marc.Where we work the grid to ground distortion is between 0 to a little more than 100 ppm. The engineers requesting these surveys do not s...

ClarificationW Frl. Half Govt. Lot 7

ClarificationJudPerhaps. The fact that its a lot to start with indicates the govt was done subdividing into aliquot parts. However I believe any BLM s...

ClarificationIf it were a government patent for the E/2 it would be 10 ch. If the parcel originated as a split of a parent government patent the meani...

The owner of the machine is responsible for the files that they use. They might be wise to hire a surveyor if the surveyor knows that technical skill....

Every time this BLA discsussion comes up it seems to evolve into two camps at the extreme ends of the issue. There is a happy medium based in law. The...

I find that in my state the geoid09 model does fit SOME BM's within a few hundredths in a local area (county wide)using a small offset. This is averag...