{
  "standard_profile": "GB50545_2010_110_750KV",
  "required_clearance_m": 10,
  "conductor": {
    "name": "JL/G1A-300/40 sample",
    "area_mm2": 338.99,
    "diameter_mm": 23.94,
    "unit_weight_kg_per_km": 1133.0,
    "rated_tensile_strength_kN": 92.2,
    "elastic_modulus_MPa": 65000,
    "linear_expansion_1_per_C": 0.0000205
  },
  "state0": {
    "name": "install",
    "temperature_C": 15,
    "wind_speed_m_per_s": 0,
    "ice_thickness_mm": 0,
    "stress_MPa": 80
  },
  "state1": {
    "name": "hot",
    "temperature_C": 40,
    "wind_speed_m_per_s": 0,
    "ice_thickness_mm": 0
  },
  "section_spans": [
    {
      "label": "A-B",
      "span": {"length_m": 260, "left_height_m": 34, "right_height_m": 35, "terrain_clearance_m": 0},
      "terrain_points": [
        {"station_m": 0, "ground_elevation_m": 0, "label": "A tower"},
        {"station_m": 130, "ground_elevation_m": 5, "label": "field road"},
        {"station_m": 260, "ground_elevation_m": 0, "label": "B tower"}
      ]
    },
    {
      "label": "B-C",
      "span": {"length_m": 310, "left_height_m": 35, "right_height_m": 36, "terrain_clearance_m": 0},
      "terrain_points": [
        {"station_m": 0, "ground_elevation_m": 0, "label": "B tower"},
        {"station_m": 155, "ground_elevation_m": 7, "label": "village road"},
        {"station_m": 310, "ground_elevation_m": 0, "label": "C tower"}
      ]
    },
    {
      "label": "C-D",
      "span": {"length_m": 280, "left_height_m": 36, "right_height_m": 34, "terrain_clearance_m": 0},
      "terrain_points": [
        {"station_m": 0, "ground_elevation_m": 0, "label": "C tower"},
        {"station_m": 140, "ground_elevation_m": 4, "label": "orchard"},
        {"station_m": 280, "ground_elevation_m": 0, "label": "D tower"}
      ]
    }
  ]
}