data/rebar_data.json

{
  "D10": {
    "diameter": 10.0,
    "area": 71.3,
    "perimeter": 31.4,
    "weight": 0.56
  },
  "D13": {
    "diameter": 13.0,
    "area": 126.7,
    "perimeter": 40.8,
    "weight": 0.995
  },
  "D16": {
    "diameter": 16.0,
    "area": 198.6,
    "perimeter": 50.3,
    "weight": 1.56
  },
  "D19": {
    "diameter": 19.0,
    "area": 286.5,
    "perimeter": 59.7,
    "weight": 2.25
  },
  "D22": {
    "diameter": 22.0,
    "area": 387.1,
    "perimeter": 69.1,
    "weight": 3.04
  },
  "D25": {
    "diameter": 25.0,
    "area": 506.7,
    "perimeter": 78.5,
    "weight": 3.98
  },
  "D29": {
    "diameter": 29.0,
    "area": 642.4,
    "perimeter": 91.1,
    "weight": 5.04
  },
  "D32": {
    "diameter": 32.0,
    "area": 794.2,
    "perimeter": 100.5,
    "weight": 6.23
  }
}