{
  "tables": {
    "surface_thermal_transmittance": {
      "data_type": "table",
      "notes": "Requires hdd to be defined to be evaluated in code. Never have ground windows or doors.",
      "refs": [
        "NREL Technical Report TP-5500-46861 Tables 19-25"
      ],
      "units": "W_per_m2_K",
      "table": [
        {
          "boundary_condition": "Outdoors",
          "surface": "Wall",
          "formula": "( hdd < 3000) ? 0.568 : ( hdd < 4000) ? 0.682 : ( hdd < 5000 ) ? 0.426 : ( hdd < 6000) ? 0.346 :( hdd < 7000) ? 0.346 : 0.267"
        },
        {
          "boundary_condition": "Outdoors",
          "surface": "RoofCeiling",
          "formula": "( hdd < 3000) ? 0.363 : ( hdd < 4000) ? 0.296 : ( hdd < 5000 ) ? 0.267: ( hdd < 6000) ? 0.227 :( hdd < 7000) ? 0.227 : 0.176"
        },
        {
          "boundary_condition": "Outdoors",
          "surface": "Floor",
          "formula": "( hdd < 3000) ? 3.822 : ( hdd < 4000) ? 3.822 : ( hdd < 5000 ) ? 3.822 : ( hdd < 6000) ? 3.822 :( hdd < 7000) ? 3.822 : 3.822"
        },
        {
          "boundary_condition": "Outdoors",
          "surface": "Window",
          "formula": "( hdd < 3000) ? 4.09 : ( hdd < 4000) ? 3.35 : ( hdd < 7000) ? 2.95 : 2.95"
        },
        {
          "boundary_condition": "Outdoors",
          "surface": "Door",
          "formula": "( hdd < 3000) ? 4.09 : ( hdd < 4000) ? 3.35 : ( hdd < 7000) ? 2.95 : 2.95"
        },
        {
          "boundary_condition": "Ground",
          "surface": "Wall",
          "formula": "( hdd < 3000) ? 0.606 : ( hdd < 4000) ? 0.547 : ( hdd < 5000 ) ? 0.459 : ( hdd < 6000) ? 0.425 :( hdd < 7000) ? 0.425 : 0.347"
        },
        {
          "boundary_condition": "Ground",
          "surface": "RoofCeiling",
          "formula": "( hdd < 3000) ? 0.678 : ( hdd < 4000) ? 0.678 : ( hdd < 7000) ? 0.678 : 0.678"
        },
        {
          "boundary_condition": "Ground",
          "surface": "Floor",
          "formula": "( hdd < 7000) ? 0.678 : 0.678"
        }
      ]
    }
  }
}