{

"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": [
      "NECB2017_S_3.2.2.2",
      "NECB2017_S_3.2.2.3",
      "NECB2017_S_3.2.2.4",
      "NECB2017_S_3.2.3.1"
    ],
    "units": "W_per_m2_K",
    "table": [
      {
        "boundary_condition": "Outdoors",
        "surface": "Wall",
        "formula": "( hdd < 3000) ? 0.315 : ( hdd < 4000) ? 0.278 : ( hdd < 5000 ) ? 0.247 : ( hdd < 6000) ? 0.210 :( hdd < 7000) ? 0.210 : 0.183"
      },
      {
        "boundary_condition": "Outdoors",
        "surface": "RoofCeiling",
        "formula": "( hdd < 3000) ? 0.193 : ( hdd < 4000) ? 0.156 : ( hdd < 5000 ) ? 0.156 : ( hdd < 6000) ? 0.138 :( hdd < 7000) ? 0.138 : 0.121"
      },
      {
        "boundary_condition": "Outdoors",
        "surface": "Floor",
        "formula": "( hdd < 3000) ? 0.227 : ( hdd < 4000) ? 0.183 : ( hdd < 5000 ) ? 0.183 : ( hdd < 6000) ? 0.162 :( hdd < 7000) ? 0.162 : 0.142"
      },
      {
        "boundary_condition": "Outdoors",
        "surface": "Window",
        "formula": "( hdd < 3000) ? 2.100 : ( hdd < 7000) ? 1.900 : 1.400"
      },
      {
        "boundary_condition": "Outdoors",
        "surface": "Door",
        "formula": "( hdd < 3000) ? 2.100 : ( hdd < 7000) ? 1.900 : 1.400"
      },
      {
        "boundary_condition": "Ground",
        "surface": "Wall",
        "formula": "( hdd < 3000) ? 0.568 : ( hdd < 4000) ? 0.379 : ( hdd < 7000) ? 0.284 : 0.210"
      },
      {
        "boundary_condition": "Ground",
        "surface": "RoofCeiling",
        "formula": "( hdd < 3000) ? 0.568 : ( hdd < 4000) ? 0.379 : ( hdd < 7000) ? 0.284 : 0.210"
      },
      {
        "boundary_condition": "Ground",
        "surface": "Floor",
        "formula": "( hdd < 7000) ? 0.757 : 0.379"
      }
    ]
  }
}

}