{
  "tables": {
    "surface_thermal_transmittance": {
      "data_type": "table",
      "notes": "Requires hdd to be defined to be evaluated in code. Never have ground windows or doors. SKYLIGHTS are new",
      "refs": [
        "PCF 1536",
        "PCF 1537"
      ],
      "units": "W_per_m2_K",
      "table": [
        {
          "boundary_condition": "Outdoors",
          "surface": "Wall",
          "formula": "( hdd < 3000) ? 0.290 : ( hdd < 4000) ? 0.265 : ( hdd < 5000 ) ? 0.240 : ( hdd < 6000) ? 0.215 :( hdd < 7000) ? 0.190 : 0.165"
        },
        {
          "boundary_condition": "Outdoors",
          "surface": "RoofCeiling",
          "formula": "( hdd < 3000) ? 0.164 : ( hdd < 4000) ? 0.156 : ( hdd < 5000 ) ? 0.138 : ( hdd < 6000) ? 0.121 :( hdd < 7000) ? 0.117 : 0.110"
        },
        {
          "boundary_condition": "Outdoors",
          "surface": "Floor",
          "formula": "( hdd < 3000) ? 0.193 : ( hdd < 4000) ? 0.175 : ( hdd < 5000 ) ? 0.156 : ( hdd < 6000) ? 0.138 :( hdd < 7000) ? 0.121 : 0.117"
        },
        {
          "boundary_condition": "Outdoors",
          "surface": "Window",
          "formula": "( hdd < 4000) ? 1.90 : ( hdd < 6000) ? 1.730 : 1.440"
        },
        {
          "boundary_condition": "Outdoors",
          "surface": "Skylight",
          "formula": "( hdd < 4000) ? 2.690 : ( hdd < 6000) ? 2.410 : 2.010"
        },
        {
          "boundary_condition": "Outdoors",
          "surface": "Door",
          "formula": "( hdd < 4000) ? 1.900 : ( hdd < 6000) ? 1.730 : 1.440"
        },
        {
          "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"
        }
      ]
    }
  }
}