{

"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) ? 0.994 : ( hdd < 4000) ? 0.9 : ( hdd < 5000 ) ? 0.823 : ( hdd < 6000) ? 0.772 :( hdd < 7000) ? 0.772 : 0.71"
      },
      {
        "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) ? 0.678 : ( hdd < 4000) ? 0.678 : ( hdd < 7000) ? 0.678 : 0.678"
      },
      {
        "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"
      }
    ]
  }
}

}