{
  "description": "Two-loop gravity network after Alperovits & Shamir (1977): 1 reservoir, 6 junctions, 8 pipes of 1000 m, Hazen\u2013Williams C = 130. Diameters are a fixed analysis set (inches converted to m); demands converted from m\u00b3/h.",
  "units": {
    "length": "m",
    "diameter": "m",
    "flow": "m3/s",
    "head": "m"
  },
  "headloss": "hazen-williams",
  "reservoirs": [
    {
      "id": "1",
      "head": 210.0
    }
  ],
  "junctions": [
    {
      "id": "2",
      "elevation": 150.0,
      "demand_m3s": 0.027777777777777776
    },
    {
      "id": "3",
      "elevation": 160.0,
      "demand_m3s": 0.027777777777777776
    },
    {
      "id": "4",
      "elevation": 155.0,
      "demand_m3s": 0.03333333333333333
    },
    {
      "id": "5",
      "elevation": 150.0,
      "demand_m3s": 0.075
    },
    {
      "id": "6",
      "elevation": 165.0,
      "demand_m3s": 0.09166666666666666
    },
    {
      "id": "7",
      "elevation": 160.0,
      "demand_m3s": 0.05555555555555555
    }
  ],
  "pipes": [
    {
      "id": "1",
      "from": "1",
      "to": "2",
      "L": 1000.0,
      "D": 0.4572,
      "C": 130.0
    },
    {
      "id": "2",
      "from": "2",
      "to": "3",
      "L": 1000.0,
      "D": 0.254,
      "C": 130.0
    },
    {
      "id": "3",
      "from": "2",
      "to": "4",
      "L": 1000.0,
      "D": 0.4064,
      "C": 130.0
    },
    {
      "id": "4",
      "from": "4",
      "to": "5",
      "L": 1000.0,
      "D": 0.1016,
      "C": 130.0
    },
    {
      "id": "5",
      "from": "4",
      "to": "6",
      "L": 1000.0,
      "D": 0.4064,
      "C": 130.0
    },
    {
      "id": "6",
      "from": "6",
      "to": "7",
      "L": 1000.0,
      "D": 0.254,
      "C": 130.0
    },
    {
      "id": "7",
      "from": "3",
      "to": "5",
      "L": 1000.0,
      "D": 0.254,
      "C": 130.0
    },
    {
      "id": "8",
      "from": "7",
      "to": "5",
      "L": 1000.0,
      "D": 0.0254,
      "C": 130.0
    }
  ]
}