basemappr Blog
Workflows and notes on geospatial site analysis for civil engineers.
civil-3d
coordinate-systems
dxf
state-plane
Why Your DXF Imports into Civil 3D with the Wrong Coordinate System
NAD83 State Plane comes in feet and meters — and the feet version comes in two flavors. Here's how to read the CRS name out of the GEODATA block and tell which one you got.
4 min read
civil-3d
usgs
landxml
workflow
How to Get a Civil 3D TIN Surface from USGS Elevation Data
Pull USGS 3DEP elevation into a Civil 3D TIN in under a minute — existing-conditions context for feasibility and early grading, without tile hunting or CRS cleanup.
3 min read