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      "name": "Laminated Veneer Lumber (LVL)",
      "colour": "#C19A6B",
      "lambda": 0.13,
      "thickness_mm": 39,
      "vapourFieldType": "mu",
      "vapourResistivity": 350,
      "provenance": "iso_10456",
      "provenanceDetail": "BS EN ISO 10456:2007, Table 3 (LVL, 500 kg/m3)"
    },
    "3": {
      "name": "ROCKWOOL RWA45 Acoustic & Thermal Slab",
      "colour": "#C2B280",
      "lambda": 0.035,
      "thickness_mm": 147,
      "vapourFieldType": "mu",
      "vapourResistivity": 5,
      "provenance": "manufacturer_datasheet",
      "provenanceDetail": "ROCKWOOL RWA45 General Purpose Stone Wool Insulation Slab Technical Data Sheet"
    },
    "4": {
      "name": "Laminated Veneer Lumber (LVL)",
      "colour": "#C19A6B",
      "lambda": 0.13,
      "thickness_mm": 39,
      "vapourFieldType": "mu",
      "vapourResistivity": 350,
      "provenance": "iso_10456",
      "provenanceDetail": "BS EN ISO 10456:2007, Table 3 (LVL, 500 kg/m3)"
    },
    "5": {
      "name": "Laminated Veneer Lumber (LVL)",
      "colour": "#C19A6B",
      "lambda": 0.13,
      "thickness_mm": 39,
      "vapourFieldType": "mu",
      "vapourResistivity": 350,
      "provenance": "iso_10456",
      "provenanceDetail": "BS EN ISO 10456:2007, Table 3 (LVL, 500 kg/m3)"
    },
    "6": {
      "name": "High-density fibreboard (HDF / Hardboard)",
      "colour": "#8B5A2B",
      "lambda": 0.15,
      "thickness_mm": 8,
      "vapourFieldType": "mu",
      "vapourResistivity": 150,
      "provenance": "iso_10456",
      "provenanceDetail": "BS EN ISO 10456:2007, Table 3 (Fibreboard, hard)"
    },
    "7": {
      "name": "ROCKWOOL RWA45 Acoustic & Thermal Slab",
      "colour": "#C2B280",
      "lambda": 0.035,
      "thickness_mm": 200,
      "vapourFieldType": "mu",
      "vapourResistivity": 5,
      "provenance": "manufacturer_datasheet",
      "provenanceDetail": "ROCKWOOL RWA45 General Purpose Stone Wool Insulation Slab Technical Data Sheet"
    },
    "8": {
      "name": "Laminated Veneer Lumber (LVL)",
      "colour": "#C19A6B",
      "lambda": 0.13,
      "thickness_mm": 45,
      "vapourFieldType": "mu",
      "vapourResistivity": 350,
      "provenance": "iso_10456",
      "provenanceDetail": "BS EN ISO 10456:2007, Table 3 (LVL, 500 kg/m3)"
    },
    "9": {
      "name": "OSB/3 (Oriented Strand Board)",
      "colour": "#f3d462",
      "lambda": 0.13,
      "thickness_mm": 11,
      "vapourFieldType": "mu",
      "vapourResistivity": 150,
      "provenance": "iso_10456",
      "provenanceDetail": "BS EN ISO 10456:2007, Table 3"
    },
    "10": {
      "name": "Laminated Veneer Lumber (LVL)",
      "colour": "#C19A6B",
      "lambda": 0.13,
      "thickness_mm": 39,
      "vapourFieldType": "mu",
      "vapourResistivity": 350,
      "provenance": "iso_10456",
      "provenanceDetail": "BS EN ISO 10456:2007, Table 3 (LVL, 500 kg/m3)"
    },
    "11": {
      "name": "Laminated Veneer Lumber (LVL)",
      "colour": "#C19A6B",
      "lambda": 0.13,
      "thickness_mm": 39,
      "vapourFieldType": "mu",
      "vapourResistivity": 350,
      "provenance": "iso_10456",
      "provenanceDetail": "BS EN ISO 10456:2007, Table 3 (LVL, 500 kg/m3)"
    },
    "12": {
      "name": "ROCKWOOL RWA45 Acoustic & Thermal Slab",
      "colour": "#C2B280",
      "lambda": 0.035,
      "thickness_mm": 37,
      "vapourFieldType": "mu",
      "vapourResistivity": 5,
      "provenance": "manufacturer_datasheet",
      "provenanceDetail": "ROCKWOOL RWA45 General Purpose Stone Wool Insulation Slab Technical Data Sheet"
    },
    "13": {
      "name": "High-density fibreboard (HDF / Hardboard)",
      "colour": "#8B5A2B",
      "lambda": 0.15,
      "thickness_mm": 8,
      "vapourFieldType": "mu",
      "vapourResistivity": 150,
      "provenance": "iso_10456",
      "provenanceDetail": "BS EN ISO 10456:2007, Table 3 (Fibreboard, hard)"
    },
    "14": {
      "name": "High-density fibreboard (HDF / Hardboard)",
      "colour": "#8B5A2B",
      "lambda": 0.15,
      "thickness_mm": 8,
      "vapourFieldType": "mu",
      "vapourResistivity": 150,
      "provenance": "iso_10456",
      "provenanceDetail": "BS EN ISO 10456:2007, Table 3 (Fibreboard, hard)"
    },
    "15": {
      "name": "Laminated Veneer Lumber (LVL)",
      "colour": "#C19A6B",
      "lambda": 0.13,
      "thickness_mm": 45,
      "vapourFieldType": "mu",
      "vapourResistivity": 350,
      "provenance": "iso_10456",
      "provenanceDetail": "BS EN ISO 10456:2007, Table 3 (LVL, 500 kg/m3)"
    },
    "16": {
      "name": "Laminated Veneer Lumber (LVL)",
      "colour": "#C19A6B",
      "lambda": 0.13,
      "thickness_mm": 39,
      "vapourFieldType": "mu",
      "vapourResistivity": 350,
      "provenance": "iso_10456",
      "provenanceDetail": "BS EN ISO 10456:2007, Table 3 (LVL, 500 kg/m3)"
    },
    "17": {
      "name": "Durelis Vapourblock",
      "colour": "#6B7C5A",
      "lambda": 0.14,
      "thickness_mm": 12,
      "vapourFieldType": "mu",
      "vapourResistivity": 510,
      "provenance": "manufacturer_datasheet",
      "provenanceDetail": "Durelis Vapourblock datasheet, UNILIN division panels, dated 13/01/2016"
    },
    "18": {
      "name": "ROCKWOOL RWA45 Acoustic & Thermal Slab",
      "colour": "#C2B280",
      "lambda": 0.035,
      "thickness_mm": 200,
      "vapourFieldType": "mu",
      "vapourResistivity": 5,
      "provenance": "manufacturer_datasheet",
      "provenanceDetail": "ROCKWOOL RWA45 General Purpose Stone Wool Insulation Slab Technical Data Sheet"
    },
    "19": {
      "name": "Laminated Veneer Lumber (LVL)",
      "colour": "#C19A6B",
      "lambda": 0.13,
      "thickness_mm": 39,
      "vapourFieldType": "mu",
      "vapourResistivity": 350,
      "provenance": "iso_10456",
      "provenanceDetail": "BS EN ISO 10456:2007, Table 3 (LVL, 500 kg/m3)"
    },
    "20": {
      "name": "High-density fibreboard (HDF / Hardboard)",
      "colour": "#8B5A2B",
      "lambda": 0.15,
      "thickness_mm": 8,
      "vapourFieldType": "mu",
      "vapourResistivity": 150,
      "provenance": "iso_10456",
      "provenanceDetail": "BS EN ISO 10456:2007, Table 3 (Fibreboard, hard)"
    },
    "21": {
      "name": "Insulated SJL45x200 400mm I-Joist bay",
      "colour": "#CBD5E1",
      "lambda": 0.0394,
      "assemblyRef": "ijoist_bay",
      "provenance": "assembly_reference",
      "thickness_mm": 200,
      "vapourFieldType": "sd",
      "vapourResistivity": 1.0779,
      "provenanceDetail": "2D assembly, solved separately for its equivalent conductivity"
    },
    "22": {
      "name": "Laminated Veneer Lumber (LVL)",
      "colour": "#C19A6B",
      "lambda": 0.13,
      "thickness_mm": 45,
      "vapourFieldType": "mu",
      "vapourResistivity": 350,
      "provenance": "iso_10456",
      "provenanceDetail": "BS EN ISO 10456:2007, Table 3 (LVL, 500 kg/m3)"
    },
    "23": {
      "name": "Air cavity (horizontal)",
      "colour": "#7DD3FC",
      "lambda": 0.1366,
      "cavityKind": "cavity",
      "cavityDirection": "horizontal",
      "provenance": "iso_6946",
      "thickness_mm": 25,
      "vapourFieldType": "mu",
      "vapourResistivity": 1,
      "provenanceDetail": "BS EN ISO 6946:2007 Annex B (unventilated air layer, per BR497 2.4.1)"
    },
    "24": {
      "name": "Insulated SJL45x200 400mm I-Joist bay",
      "colour": "#CBD5E1",
      "lambda": 0.0394,
      "assemblyRef": "ijoist_bay",
      "provenance": "assembly_reference",
      "thickness_mm": 200,
      "vapourFieldType": "sd",
      "vapourResistivity": 1.0779,
      "provenanceDetail": "2D assembly, solved separately for its equivalent conductivity"
    },
    "25": {
      "name": "High-density fibreboard (HDF / Hardboard)",
      "colour": "#8B5A2B",
      "lambda": 0.15,
      "thickness_mm": 8,
      "vapourFieldType": "mu",
      "vapourResistivity": 150,
      "provenance": "iso_10456",
      "provenanceDetail": "BS EN ISO 10456:2007, Table 3 (Fibreboard, hard)"
    },
    "26": {
      "name": "Laminated Veneer Lumber (LVL)",
      "colour": "#C19A6B",
      "lambda": 0.13,
      "thickness_mm": 45,
      "vapourFieldType": "mu",
      "vapourResistivity": 350,
      "provenance": "iso_10456",
      "provenanceDetail": "BS EN ISO 10456:2007, Table 3 (LVL, 500 kg/m3)"
    },
    "27": {
      "name": "Standard Plasterboard (Gypsum Wallboard)",
      "colour": "#E8E6E0",
      "lambda": 0.25,
      "thickness_mm": 12.5,
      "vapourFieldType": "mu",
      "vapourResistivity": 50,
      "provenance": "iso_10456",
      "provenanceDetail": "BS EN ISO 10456:2007, Table 3 (Gypsum plasterboard)"
    },
    "28": {
      "name": "Gutex Thermowall 5in1",
      "colour": "#C8A878",
      "lambda": 0.04,
      "thickness_mm": 40,
      "vapourFieldType": "mu",
      "vapourResistivity": 4,
      "provenance": "manufacturer_datasheet",
      "provenanceDetail": "Gutex Thermowall 5in1 Technical Data Sheet, Status 2026-07"
    },
    "29": {
      "name": "Laminated Veneer Lumber (LVL)",
      "colour": "#C19A6B",
      "lambda": 0.13,
      "thickness_mm": 39,
      "vapourFieldType": "mu",
      "vapourResistivity": 350,
      "provenance": "iso_10456",
      "provenanceDetail": "BS EN ISO 10456:2007, Table 3 (LVL, 500 kg/m3)"
    }
  },
  "edge_boundary_conditions": {
    "0": "adiabatic",
    "1": "adiabatic",
    "2": "adiabatic",
    "3": "internal",
    "4": "internal",
    "5": "adiabatic",
    "6": "adiabatic",
    "7": "adiabatic",
    "8": "adiabatic",
    "9": "adiabatic",
    "10": "adiabatic",
    "11": "external_ventilated",
    "12": "external_ventilated",
    "13": "adiabatic",
    "14": "adiabatic",
    "15": "adiabatic"
  }
}