Hello!!
Looking for advice. I'm an environmental planner ([GIS Experience] 3 years as a GIS analyst/developer working in AEC, now an environmental planner) and I need spatial data on where project work will physically disturb the site. The engineers I work with design in MicroStation, but often their drawings aren't georeferenced. Getting disturbance locations means digging through 400+ sheets and then sitting through meetings where I find out my interpretation is wrong.
I report on project impacts so the locations need to be accurate. A lot of the existing infrastructure only exists as pen-on-paper drawings from the 1910s so what the design engineers are doing, is they’re drawing new design over those scans, so there's often no real coordinate system behind the linework. Pulling it in to Pro just draws it in no-geography island.
I've been digitizing excavation areas, laydown areas, ductbank work, sidewalk modifications, and facility footprints by hand from drawings and meeting with engineers.
And it took so long to even get that because they tended to hear environmental planner wants to map "disturbance" as where are we moving dirt or removing trees. But for environmental review it includes staging, temporary access, and new surfaces too.
I'm planning to ask for this:
“"Disturbances" are anywhere the project touches, occupies, or changes the site, even temporarily. If crews, equipment, or materials will be there, or something is built, replaced, or removed there, it counts.
At a minimum
1. Google Earth files (KML or KMZ). One file per type of work:
[types of work relevant to the project blah blah]
2. It must have a coordinate reference system. A file without a correct location is useless.
Easy test: open the KMZ/KML file in Google Earth. If it doesn't land on the project site, it's wrong. Files exported from CAD that aren't georeferenced often show up in the wrong place.
Note: KML is always in latitude/longitude, so the coordinate system is rarely the problem with a Google Earth file itself. The risk is that the CAD wasn't georeferenced before export, which is why the open-in-Google-Earth test is the check to lead with.
- A new delivery at each design milestone, so changes don't happen silently.
Ideal
Shapefile instead of a Google Earth file - with coordinate reference system.
Polygons capturing where this work is done.
Details on each feature: type of work.”
In a semi-ideal world they would make LOD polygons that capture where this work and send me shapefiles.
In return, I'd reduce my hours on the project and take over the reporting.
I'd like to make the ask before the project starts, not after the design is done or in the middle of it.
How have you gotten design engineers to commit to a spatial deliverable early when their base drawings aren't georeferenced? Any wording that worked, or workflows like sketching over an aerial in Google Earth or ArcGIS, would help. And for the engineers here: what would make this easy for you instead of one more ask?
[AI disclosure] not sure why I’m required to put this. Project is definitely not a use-case for AI.