{
  "bridge_name": "산외교",
  "source_model": "ground_model_source.json",
  "crs": "EPSG:5187",
  "crs_status": "inferred_location_checked",
  "map_margin_m": 180,
  "terrain_source_available": true,
  "drawing": "종평면도.dxf",
  "workbook": "엔지니어(sample1)_261027_π형 교각입력데이터(산외교).xlsx",
  "terrain_block": "CSSAA14",
  "terrain_crs": "EPSG:5183",
  "contour_step_m": 2.0,
  "dedup_m": 0.05,
  "tin_max_edge_m": 100.0,
  "grid": {
    "origin": [
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    ],
    "step": 5.0,
    "nx": 105,
    "ny": 131
  }
}