Idea: DEM to TIN to TIN Triangle to Multipatch to CAD
- To get DEM file, down SRTM via USGS Earthexplorer
- Add DEM file into ArcGIS canvas (e.g. SG Raster)
- Run “Raster to TIN” Tool (e.g. SG Raster)
- Z tolerance = 2
- Name = TIN2
- Run “TIN Triangle” for TIN2
- Run “Layer 3D to Feature Class”. It will become a multipatch
- Run “Export to CAD” . Save as DWG. (v. 2004)
- Open in CAD software
Refer to youtube video for steps: