| Step | Action | |------|--------| | 1 | In Google Earth Pro, locate site. Add a polygon boundary. | | 2 | Save as KMZ. | | 3 | Open QGIS. Load KMZ → Right-click layer → Export → Save Features As... → Format DXF, CRS: UTM zone of site. | | 4 | Open AutoCAD → Open DXF → Site boundary appears as polylines. | | 5 | To add imagery: In Google Earth, Save Image → high-res JPEG. In AutoCAD, IMAGEATTACH → scale by matching known distance from boundary polyline. | | Use Case | Recommended Method | Expected Accuracy | |----------|--------------------|-------------------| | Conceptual design / master planning | Raster image overlay | ±2–5 m | | Site analysis & existing conditions | Vector KML → DXF via GIS | ±1–3 m | | Topographic mapping (rough) | Extracted contours from GE | ±5–10 m | | Engineering / Construction | Do not use GE; use survey or official GIS | N/A |