We have a project that has to be in grid but the distances and areas all have to be shown as ground...around 600 acres. Spec says: All distances shown on the maps shall be horizontal GROUND distances. All areas shown on the map shall be GROUND areas. The following notes will appear on all maps:
A) "All distances shown are horizontal ground distances".
B) "All areas shown are ground areas".
C) "All bearings shown are grid bearings unless otherwise noted".
D) "All coordinates shown are New York State plane coordinates East Zone; datum is NAD 83 (2011)".
E) "To convert from ground distances to grid distances multiply by xxxxx".
We applied the scale factor to all the total station data upon import and fit it over the GPS points with no problem. We scaled the deed builds to grid so it all fits properly to the gird shots. But when we go to label the B/D's on the map we will be getting the grid distances, not the ground distances.
Is there a way to label the ground distance automatically or do I have to copy the final boundary fit, scale it back to ground, label it, then move the labels? I realize the differences will be small but some lines are a couple of thousand feet so we'll see the difference.
Or am I approaching this whole thing wrong?
NESurveyor
If you have the projection and the proper scale factor set in your drawing you can select to label the scaled distance in the annotate defaults tab. See photo below...
This has to be a NYS DEC project. For the life of me, I can not understand why they require ground distances to be shown. I have heard the comment that it is so the layperson will be able to measure the distance who might not understand the difference between grid and ground. Still does not make sense to me, just adds confusion.
> This has to be a NYS DEC project. For the life of me, I can not understand why they require ground distances to be shown. I have heard the comment that it is so the layperson will be able to measure the distance who might not understand the difference between grid and ground. Still does not make sense to me, just adds confusion.
I used to do acquisition surveys for the Florida Department of Environmental Protection and they only wanted ground distances and ground area, but with grid bearings and coordinates. Seeing that acreage was how they appraised how much they were going to pay for properties, I imagine they didn't someone coming back and saying that they weren't payed enough because the acreage values were scaled smaller (which was usually the case) than they really were.
Please correct me if I'm wrong, but aren't grid bearings and ground bearings the same? That is, when you are using a conformal projection.
Also, I might include that the state plane coordinates are grid in note D just to use the word 'grid' again to illustrate the point. We know they are grid, but others viewing the map may have trouble with the concept.
FDEP and FDOT use the same practices, when buying land. I always wondered if anyone would ever sue for reporting the wrong acres. What a domino effect that would cause. But as a citizen I would want to be compensated for the true value of land, not the grid value.
> If you have the projection and the proper scale factor set in your drawing you can select to label the scaled distance in the annotate defaults tab. See photo below...
You can set up area annotations to use ground area as well.
My biggest irk is that the annotations settings aren't saving in the .ini file. If I'm working in a SPC project and annotating grid/ground, then open a local project and start annotating, I always forget to change the settings to match. It would be so great if the point and annotations styles were project specific.
Yep, DEC Flood Protection Survey.
Pay Items Are Ground Distance
Do not want some contractor suing for overage from grid to ground because it will cost much more than the scale factor.
Paul in PA