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    "openingsNote": "Glazing aperture 106.06 m² = 51 IfcWindow at OverallWidth × OverallHeight (106.06 m²). Exterior doors are separate — a door is aperture, not glazing: 16 IfcDoor, 81.03 m², OverallWidth × OverallHeight. Host wall by IfcRelFillsElement → IfcOpeningElement → IfcRelVoidsElement (0 openings), or where that chain does not reach the exterior-wall set, by an exterior wall adjacent in the opening's plane within 0.3 m (67). Sector is the host wall's, from the same orientation pass as the wall split. Envelope by a both-sides probe against the conditioned IfcSpace solids (6 of 100 have geometry, so an empty probe is inconclusive and the host wall decides); this file has no IfcCurtainWall; 5 openings hosted in walls outside the exterior set; 12 window(s) (19.49 m²) and 81 door(s) (201.7 m²) sit in the plane of walls outside the exterior-wall set and are not counted — the wall names are on each row; 247 sub-frames; 52 unresolved (11.9 m² where a size is stated). IsExternal is reported per row and never used as a filter — it means \"not an interior partition\" to an authoring tool, never \"bounds conditioned space against outdoor air\". It marks 20 door(s) here; 16 confirm against an exterior wall, 4 do not: #77756 merk F-R 4.23 m², #81462 merk F-R 4.23 m², #187290 merk F-R 4.23 m², #189383 merk F-R 4.23 m². Rows in openings.json.",
    "conditionedVolumeGrossM3": 2897.04,
    "roomVolumeNetM3": 2497.61,
    "volumeNote": "Gross from 100 spaces (floor area × storey height; voids, and rooms taller than their storey with no void above, as their own solids); net from 100 spaces (100 from stated volume quantity). A closed tessellation's signed volume is exact.",
    "roofProjectedSqm": 383.55,
    "roofProjectedByFamilySqm": {
      "dakvloer": 135.37,
      "sporenkap": 124.9,
      "plat dak": 95.01,
      "dak dakkapel": 14.38,
      "lifttop": 5.75,
      "plafond": 3.33,
      "spouwisolatie": 1.79,
      "dakaftimmering": 1.62,
      "dakisolatie": 1.39,
      "dakelement": 0
    },
    "roofElementSumSqm": 519.27,
    "roofUnionSqm": 361.86,
    "roofSurfaceSqm": 692.04,
    "roofSurfaceByFamilySqm": {
      "sporenkap": 306,
      "dakvloer": 259.73,
      "plat dak": 95.3,
      "dak dakkapel": 14.49,
      "lifttop": 5.75,
      "plafond": 3.33,
      "dakisolatie": 3.18,
      "spouwisolatie": 2.42,
      "dakaftimmering": 1.84,
      "dakelement": 0
    },
    "roofNote": "Plan shadow per element (union of its projected triangles, ifc-plan-shadow.mjs): 78 elements — 62 IfcSlab.PredefinedType=ROOF, 16 by declared slab name (dakvloer, plat dak, lifttop). roofProjectedSqm sums 10 roof type(s), each as the union of its elements; the elements themselves sum to 519.27 m² (elements of one type overlapping in plan) and all types together cover 361.86 m² (one type above another). surfaceSqm is each element's true one-sheet surface (Σ area of its upward faces; ÷ 2 where a surface model has no downward face and both sheets are wound upward; ÷ the coverage where its parts cover its shadow more than once, as stacked layer solids do — surfaceBasis says which), summing to 692.04 m²; a flat deck's surface equals its shadow, a pitched roof's exceeds it. 34 element(s) present their top face more than once (upward-face sum above shadow) — the reason the shadow is used and Σ area×n_y is not. 1 shadow(s) needed a vertex grid coarser than 1 µm to union. The file types its flat roof decks as IfcSlab FLOOR — dakvloer (9 slabs at 11.62–11.84 m on storey '04 dak'), plat dak (6 at 5.67–5.84 m, the low-rise wing) and lifttop (1 at 12.60–12.80 m) — so they are declared roof by name; a type-only rule found 136 m² of roof on a four-storey block. gootconstructie (gutters), prefab balkon (balconies) and the FLOOR-typed dakisolatie stacked on the lifttop are not declared. The pitched sporenkap is exported as stacked layer solids, which is why its upward-face sum exceeds its shadow.",
    "groundSlabSqm": 345.81,
    "groundSlabSumSqm": 678.28,
    "groundPerimeterM": 90.08,
    "groundHolePerimeterM": 4.06,
    "groundNote": "IfcSlab (not ROOF or LANDING) on storeys at or below 00 begane grond (0 m): 81 candidate(s). A slab counts as ground envelope when a conditioned space stands on it — its shadow overlaps a conditioned ground-storey space footprint (32 of 32 such spaces have one: 3 solid, 29 footprint) or an IfcRelSpaceBoundary names it as bounding one. IsExternal is not consulted. 81 counted, 0 excluded. groundSlabSqm is the union of the counted shadows (they sum to 678.28 m²; stacked build-up layers count once); groundPerimeterM is the outline's outer ring; 2 hole ring(s) totalling 4.06 m are reported and not added."
  },
  "assemblies": [
    {
      "id": "assembly-ifc-kalkzandsteen-100mm",
      "name": "IFC_kalkzandsteen_100mm",
      "totalThicknessM": 0.1,
      "layers": [
        {
          "name": "03 Metselwerk - kalkzandsteen C",
          "thicknessM": 0.1,
          "ref": "ifc://IFC Schependomlaan.ifc#260"
        }
      ],
      "ref": "ifc://IFC Schependomlaan.ifc#262"
    },
    {
      "id": "assembly-ifc-kalkzandsteen-300mm",
      "name": "IFC_kalkzandsteen_300mm",
      "totalThicknessM": 0.3,
      "layers": [
        {
          "name": "03 Metselwerk - kalkzandsteen C",
          "thicknessM": 0.3,
          "ref": "ifc://IFC Schependomlaan.ifc#27842"
        }
      ],
      "ref": "ifc://IFC Schependomlaan.ifc#27843"
    },
    {
      "id": "assembly-ifc-kalkzandsteen-214mm",
      "name": "IFC_kalkzandsteen_214mm",
      "totalThicknessM": 0.214,
      "layers": [
        {
          "name": "03 Metselwerk - kalkzandsteen C",
          "thicknessM": 0.214,
          "ref": "ifc://IFC Schependomlaan.ifc#28267"
        }
      ],
      "ref": "ifc://IFC Schependomlaan.ifc#28268"
    },
    {
      "id": "assembly-ifc-kalkzandsteen-175mm",
      "name": "IFC_kalkzandsteen_175mm",
      "totalThicknessM": 0.175,
      "layers": [
        {
          "name": "03 Metselwerk - kalkzandsteen C",
          "thicknessM": 0.175,
          "ref": "ifc://IFC Schependomlaan.ifc#28639"
        }
      ],
      "ref": "ifc://IFC Schependomlaan.ifc#28640"
    },
    {
      "id": "assembly-ifc-kalkzandsteen-120mm",
      "name": "IFC_kalkzandsteen_120mm",
      "totalThicknessM": 0.12,
      "layers": [
        {
          "name": "03 Metselwerk - kalkzandsteen C",
          "thicknessM": 0.12,
          "ref": "ifc://IFC Schependomlaan.ifc#29199"
        }
      ],
      "ref": "ifc://IFC Schependomlaan.ifc#29200"
    },
    {
      "id": "assembly-ifc-vloer-geisoleerde-kanaalplaat-rc-3-00",
      "name": "IFC_vloer_geisoleerde_kanaalplaat_Rc=3,00",
      "totalThicknessM": 0.333,
      "layers": [
        {
          "name": "02 Beton gewapend - prefab VLOER",
          "thicknessM": 0.2,
          "ref": "ifc://IFC Schependomlaan.ifc#33236"
        },
        {
          "name": "99 Isolatie - EPS",
          "thicknessM": 0.133,
          "ref": "ifc://IFC Schependomlaan.ifc#33252"
        }
      ],
      "ref": "ifc://IFC Schependomlaan.ifc#33253"
    },
    {
      "id": "assembly-ifc-vloer-eps-stortstrook-rc-3-00",
      "name": "IFC_vloer_EPS_stortstrook_Rc=3,00",
      "totalThicknessM": 0.335,
      "layers": [
        {
          "name": "02 Beton ongewapend C",
          "thicknessM": 0.185,
          "ref": "ifc://IFC Schependomlaan.ifc#39430"
        },
        {
          "name": "99 Isolatie - EPS",
          "thicknessM": 0.15,
          "ref": "ifc://IFC Schependomlaan.ifc#39431"
        }
      ],
      "ref": "ifc://IFC Schependomlaan.ifc#39432"
    },
    {
      "id": "assembly-ifc-baksteen-kopergeel-100mm-liggend",
      "name": "IFC_baksteen_kopergeel_100mm_liggend",
      "totalThicknessM": 0.1,
      "layers": [
        {
          "name": "03 mw-baksteen - geel (liggend)",
          "thicknessM": 0.1,
          "ref": "ifc://IFC Schependomlaan.ifc#46161"
        }
      ],
      "ref": "ifc://IFC Schependomlaan.ifc#46162"
    },
    {
      "id": "assembly-ifc-kozijn-90x114",
      "name": "IFC_kozijn_90x114",
      "totalThicknessM": 0.114,
      "layers": [
        {
          "name": "01 Hout - hardhout",
          "thicknessM": 0.114,
          "ref": "ifc://IFC Schependomlaan.ifc#46554"
        }
      ],
      "ref": "ifc://IFC Schependomlaan.ifc#46555"
    },
    {
      "id": "assembly-ifc-baksteen-roodbruin-100mm-staand",
      "name": "IFC_baksteen_roodbruin_100mm_staand",
      "totalThicknessM": 0.1,
      "layers": [
        {
          "name": "03 mw-baksteen - bruin (staand)",
          "thicknessM": 0.1,
          "ref": "ifc://IFC Schependomlaan.ifc#51779"
        }
      ],
      "ref": "ifc://IFC Schependomlaan.ifc#51780"
    },
    {
      "id": "assembly-ifc-dekvloer",
      "name": "IFC_dekvloer",
      "totalThicknessM": 0.09,
      "layers": [
        {
          "name": "24 Cementdekvloer 90mm",
          "thicknessM": 0.09,
          "ref": "ifc://IFC Schependomlaan.ifc#90823"
        }
      ],
      "ref": "ifc://IFC Schependomlaan.ifc#90824"
    },
    {
      "id": "assembly-ifc-baksteen-roodbruin-100mm-liggend",
      "name": "IFC_baksteen_roodbruin_100mm_liggend",
      "totalThicknessM": 0.1,
      "layers": [
        {
          "name": "03 mw-baksteen - bruin (liggend)",
          "thicknessM": 0.1,
          "ref": "ifc://IFC Schependomlaan.ifc#146917"
        }
      ],
      "ref": "ifc://IFC Schependomlaan.ifc#146918"
    },
    {
      "id": "assembly-ifc-baksteen-kopergeel-100mm-staand",
      "name": "IFC_baksteen_kopergeel_100mm_staand",
      "totalThicknessM": 0.1,
      "layers": [
        {
          "name": "03 mw-baksteen - geel (staand)",
          "thicknessM": 0.1,
          "ref": "ifc://IFC Schependomlaan.ifc#178133"
        }
      ],
      "ref": "ifc://IFC Schependomlaan.ifc#178134"
    },
    {
      "id": "assembly-ifc-separatiewand-gasbeton-100mm",
      "name": "IFC_separatiewand_gasbeton_100mm",
      "totalThicknessM": 0.1,
      "layers": [
        {
          "name": "99 Lichte scheidingswand - normaal",
          "thicknessM": 0.1,
          "ref": "ifc://IFC Schependomlaan.ifc#210118"
        }
      ],
      "ref": "ifc://IFC Schependomlaan.ifc#210119"
    },
    {
      "id": "assembly-ifc-separatiewand-gasbeton-100mm-hydro",
      "name": "IFC_separatiewand_gasbeton_100mm_hydro",
      "totalThicknessM": 0.1,
      "layers": [
        {
          "name": "99 Lichte scheidingswand - hydro",
          "thicknessM": 0.1,
          "ref": "ifc://IFC Schependomlaan.ifc#216534"
        }
      ],
      "ref": "ifc://IFC Schependomlaan.ifc#216535"
    },
    {
      "id": "assembly-ifc-gipsblokken-70mm",
      "name": "IFC_gipsblokken_70mm",
      "totalThicknessM": 0.07,
      "layers": [
        {
          "name": "99 Lichte scheidingswand - gipsblokken",
          "thicknessM": 0.07,
          "ref": "ifc://IFC Schependomlaan.ifc#220566"
        }
      ],
      "ref": "ifc://IFC Schependomlaan.ifc#220567"
    },
    {
      "id": "assembly-ifc-separatiewand-gasbeton-70mm",
      "name": "IFC_separatiewand_gasbeton_70mm",
      "totalThicknessM": 0.07,
      "layers": [
        {
          "name": "99 Lichte scheidingswand - normaal",
          "thicknessM": 0.07,
          "ref": "ifc://IFC Schependomlaan.ifc#228225"
        }
      ],
      "ref": "ifc://IFC Schependomlaan.ifc#228226"
    },
    {
      "id": "assembly-ifc-schoonloopmat",
      "name": "IFC schoonloopmat",
      "totalThicknessM": 0.008,
      "layers": [
        {
          "name": "12 Schoonloopmat",
          "thicknessM": 0.008,
          "ref": "ifc://IFC Schependomlaan.ifc#294524"
        }
      ],
      "ref": "ifc://IFC Schependomlaan.ifc#294525"
    },
    {
      "id": "assembly-ifc-breedplaat-schil-60mm",
      "name": "IFC_breedplaat_schil_60mm",
      "totalThicknessM": 0.06,
      "layers": [
        {
          "name": "02 Beton gewapend - prefab",
          "thicknessM": 0.06,
          "ref": "ifc://IFC Schependomlaan.ifc#318803"
        }
      ],
      "ref": "ifc://IFC Schependomlaan.ifc#318804"
    },
    {
      "id": "assembly-ifc-dakkapel-zijwang",
      "name": "IFC_dakkapel_zijwang",
      "totalThicknessM": 0.151,
      "layers": [
        {
          "name": "99 Isolatie - Glaswol zacht",
          "thicknessM": 0.14,
          "ref": "ifc://IFC Schependomlaan.ifc#456163"
        },
        {
          "name": "01 plaatmateriaal - spaanplaat - wit",
          "thicknessM": 0.011,
          "ref": "ifc://IFC Schependomlaan.ifc#456164"
        }
      ],
      "ref": "ifc://IFC Schependomlaan.ifc#456165"
    },
    {
      "id": "assembly-ifc-dekvloer-zwevend",
      "name": "IFC_dekvloer_zwevend",
      "totalThicknessM": 0.09,
      "layers": [
        {
          "name": "24 Cementdekvloer 70mm",
          "thicknessM": 0.07,
          "ref": "ifc://IFC Schependomlaan.ifc#522023"
        },
        {
          "name": "99 Isolatie - zwevende dekvloer",
          "thicknessM": 0.02,
          "ref": "ifc://IFC Schependomlaan.ifc#522024"
        }
      ],
      "ref": "ifc://IFC Schependomlaan.ifc#522025"
    },
    {
      "id": "assembly-ifc-separatiewand-gasbeton-70mm-hydro",
      "name": "IFC_separatiewand_gasbeton_70mm_hydro",
      "totalThicknessM": 0.07,
      "layers": [
        {
          "name": "99 Lichte scheidingswand - hydro",
          "thicknessM": 0.07,
          "ref": "ifc://IFC Schependomlaan.ifc#534011"
        }
      ],
      "ref": "ifc://IFC Schependomlaan.ifc#534012"
    },
    {
      "id": "assembly-01-plaatmateriaal-multiplex-18",
      "name": "01 plaatmateriaal - multiplex 18",
      "totalThicknessM": 0.018,
      "layers": [
        {
          "name": "01 plaatmateriaal - multiplex",
          "thicknessM": 0.018,
          "ref": "ifc://IFC Schependomlaan.ifc#705122"
        }
      ],
      "ref": "ifc://IFC Schependomlaan.ifc#705123"
    },
    {
      "id": "assembly-ifc-isolatie-110mm-glaswol",
      "name": "IFC_isolatie_110mm_glaswol",
      "totalThicknessM": 0.11,
      "layers": [
        {
          "name": "99 Isolatie - Glaswol 70mm",
          "thicknessM": 0.11,
          "ref": "ifc://IFC Schependomlaan.ifc#797167"
        }
      ],
      "ref": "ifc://IFC Schependomlaan.ifc#797168"
    },
    {
      "id": "assembly-ifc-dakplaat-geisoleerd-rc-4-00",
      "name": "IFC_dakplaat_geisoleerd_Rc=4,00",
      "totalThicknessM": 0.206,
      "layers": [
        {
          "name": "99 Lucht frame",
          "thicknessM": 0.005,
          "ref": "ifc://IFC Schependomlaan.ifc#809508"
        },
        {
          "name": "99 Isolatie - Glaswol 190mm",
          "thicknessM": 0.19,
          "ref": "ifc://IFC Schependomlaan.ifc#809509"
        },
        {
          "name": "01 plaatmateriaal - spaanplaat - wit",
          "thicknessM": 0.011,
          "ref": "ifc://IFC Schependomlaan.ifc#809510"
        }
      ],
      "ref": "ifc://IFC Schependomlaan.ifc#809511"
    },
    {
      "id": "assembly-ifc-verlaagd-plafond",
      "name": "IFC_verlaagd_plafond",
      "totalThicknessM": 0.05,
      "layers": [
        {
          "name": "99 Lucht frame",
          "thicknessM": 0.05,
          "ref": "ifc://IFC Schependomlaan.ifc#836069"
        }
      ],
      "ref": "ifc://IFC Schependomlaan.ifc#836070"
    },
    {
      "id": "assembly-ifc-hsb-70mm",
      "name": "IFC_HSB_70mm",
      "totalThicknessM": 0.07,
      "layers": [
        {
          "name": "99 Lichte scheidingswand - normaal",
          "thicknessM": 0.07,
          "ref": "ifc://IFC Schependomlaan.ifc#898876"
        }
      ],
      "ref": "ifc://IFC Schependomlaan.ifc#898877"
    },
    {
      "id": "assembly-ifc-betonvloer-prefab-200mm",
      "name": "IFC_betonvloer_prefab_200mm",
      "totalThicknessM": 0.2,
      "layers": [
        {
          "name": "02 Beton gewapend - prefab",
          "thicknessM": 0.2,
          "ref": "ifc://IFC Schependomlaan.ifc#984473"
        }
      ],
      "ref": "ifc://IFC Schependomlaan.ifc#984474"
    }
  ],
  "orientation": {
    "trueNorthDeg": null,
    "northAssumed": true,
    "weakOutwardCount": 17,
    "offCardinalCount": 0,
    "offCardinalSqm": 0,
    "wallCount": 122,
    "note": "Azimuths are clockwise from north, where north is the model's -Z after web-ifc's Z-up to Y-up conversion. Outward face inferred by comparing each face's centroid with the building centre, which is correct for a convex plan and can be wrong at a re-entrant corner. All 122 inner-leaf walls are cardinal; the diagonal sectors are 0 by measurement. The model's 88 placements at 47.94° are the excluded outer leaf (buitenblad), so no envelope area is mis-binned."
  },
  "site": {
    "declaredSiteName": "Site",
    "declaredLatitudeDeg": 52.15,
    "declaredLongitudeDeg": 5.383333333333334,
    "locationIsAuthoringDefault": true,
    "locationNote": "IfcSite states 52°9'N 5°23'E — a whole-minute value with zero seconds, 46.2 km from the real Schependomlaan in Nijmegen and in Amersfoort, the authoring architect's own city. It is a stamped constant, not a survey: no position, orientation or solar geometry may be taken from it. The town 'Nijmegen' IS stated, on both IfcSite and IfcBuilding, and is the only spatial fact this model supports. TrueNorth is the schema default (0.,1.) in both representation contexts, so orientation is an assumption — and note the geometry is not purely cardinal: 88 element placements sit at 47.94°.",
    "statedTown": "Nijmegen",
    "trueNorthStated": false
  },
  "storeys": [
    {
      "id": "storey-1-fundering",
      "name": "-1 fundering",
      "elevationM": -1,
      "floorToFloorHeightM": 1,
      "spaceCount": 0,
      "floorAreaSqm": 0,
      "ref": "ifc://IFC Schependomlaan.ifc#130"
    },
    {
      "id": "storey-00-begane-grond",
      "name": "00 begane grond",
      "elevationM": 0,
      "floorToFloorHeightM": 3,
      "spaceCount": 32,
      "floorAreaSqm": 302.24,
      "ref": "ifc://IFC Schependomlaan.ifc#23569"
    },
    {
      "id": "storey-01-eerste-verdieping",
      "name": "01 eerste verdieping",
      "elevationM": 3,
      "floorToFloorHeightM": 3,
      "spaceCount": 29,
      "floorAreaSqm": 290.56,
      "ref": "ifc://IFC Schependomlaan.ifc#311035"
    },
    {
      "id": "storey-02-tweede-verdieping",
      "name": "02 tweede verdieping",
      "elevationM": 6,
      "floorToFloorHeightM": 3,
      "spaceCount": 20,
      "floorAreaSqm": 195.85,
      "ref": "ifc://IFC Schependomlaan.ifc#597392"
    },
    {
      "id": "storey-03-derde-verdieping",
      "name": "03 derde verdieping",
      "elevationM": 9,
      "floorToFloorHeightM": 3,
      "spaceCount": 19,
      "floorAreaSqm": 177.02,
      "ref": "ifc://IFC Schependomlaan.ifc#776514"
    },
    {
      "id": "storey-04-dak",
      "name": "04 dak",
      "elevationM": 12,
      "floorToFloorHeightM": 0,
      "spaceCount": 0,
      "floorAreaSqm": 0,
      "ref": "ifc://IFC Schependomlaan.ifc#984411"
    }
  ],
  "spacesFile": "spaces.json",
  "roofs": [
    {
      "id": "roof-335985",
      "name": "sporenkap",
      "family": "sporenkap",
      "elementType": "IfcSlab",
      "predefinedType": "ROOF",
      "basis": "IfcSlab.PredefinedType=ROOF",
      "storeyId": "storey-01-eerste-verdieping",
      "projectedSqm": 1.65,
      "upFacingProjectedSqm": 4.44,
      "tiltDeg": 64.3,
      "surfaceSqm": 3.8,
      "surfaceBasis": "upward faces ÷ 2.69: the element's parts cover its shadow 2.69× over (stacked layer solids or overlapping pieces)",
      "partOf": null,
      "ref": "ifc://IFC Schependomlaan.ifc#335985"
    },
    {
      "id": "roof-367844",
      "name": "sporenkap",
      "family": "sporenkap",
      "elementType": "IfcSlab",
      "predefinedType": "ROOF",
      "basis": "IfcSlab.PredefinedType=ROOF",
      "storeyId": "storey-01-eerste-verdieping",
      "projectedSqm": 0.16,
      "upFacingProjectedSqm": 0.16,
      "tiltDeg": 64,
      "surfaceSqm": 0.38,
      "surfaceBasis": "upward faces of a closed solid",
      "partOf": null,
      "ref": "ifc://IFC Schependomlaan.ifc#367844"
    },
    {
      "id": "roof-418310",
      "name": "sporenkap",
      "family": "sporenkap",
      "elementType": "IfcSlab",
      "predefinedType": "ROOF",
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      "ref": "ifc://IFC Schependomlaan.ifc#987435"
    },
    {
      "id": "roof-987924",
      "name": "dakvloer",
      "family": "dakvloer",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "basis": "declared roof slab name",
      "storeyId": "storey-04-dak",
      "projectedSqm": 16.6,
      "upFacingProjectedSqm": 16.6,
      "tiltDeg": 0,
      "surfaceSqm": 16.6,
      "surfaceBasis": "upward faces of a closed solid",
      "partOf": null,
      "ref": "ifc://IFC Schependomlaan.ifc#987924"
    },
    {
      "id": "roof-988126",
      "name": "dakvloer",
      "family": "dakvloer",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "basis": "declared roof slab name",
      "storeyId": "storey-04-dak",
      "projectedSqm": 16.52,
      "upFacingProjectedSqm": 16.52,
      "tiltDeg": 0,
      "surfaceSqm": 16.52,
      "surfaceBasis": "upward faces of a closed solid",
      "partOf": null,
      "ref": "ifc://IFC Schependomlaan.ifc#988126"
    },
    {
      "id": "roof-988370",
      "name": "dakvloer",
      "family": "dakvloer",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "basis": "declared roof slab name",
      "storeyId": "storey-04-dak",
      "projectedSqm": 16.54,
      "upFacingProjectedSqm": 16.54,
      "tiltDeg": 0,
      "surfaceSqm": 16.54,
      "surfaceBasis": "upward faces of a closed solid",
      "partOf": null,
      "ref": "ifc://IFC Schependomlaan.ifc#988370"
    },
    {
      "id": "roof-991286",
      "name": "dakvloer",
      "family": "dakvloer",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "basis": "declared roof slab name",
      "storeyId": "storey-04-dak",
      "projectedSqm": 7.73,
      "upFacingProjectedSqm": 8.04,
      "tiltDeg": 0,
      "surfaceSqm": 7.73,
      "surfaceBasis": "upward faces ÷ 1.04: the element's parts cover its shadow 1.04× over (stacked layer solids or overlapping pieces)",
      "partOf": null,
      "ref": "ifc://IFC Schependomlaan.ifc#991286"
    }
  ],
  "groundSlabs": [
    {
      "id": "slab-5715",
      "name": "liftputvloer",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-1-fundering",
      "projectedSqm": 13.16,
      "countsAsGround": true,
      "evidence": "5.53 m² under 5 conditioned space footprint(s)",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#5715"
    },
    {
      "id": "slab-33223",
      "name": "vloer_V0",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 6.61,
      "countsAsGround": true,
      "evidence": "6.61 m² under 1 conditioned space footprint(s)",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#33223"
    },
    {
      "id": "slab-33399",
      "name": "vloer_V0",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 9.49,
      "countsAsGround": true,
      "evidence": "9.49 m² under 1 conditioned space footprint(s)",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#33399"
    },
    {
      "id": "slab-33537",
      "name": "vloer_V0",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 9.49,
      "countsAsGround": true,
      "evidence": "9.49 m² under 2 conditioned space footprint(s)",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#33537"
    },
    {
      "id": "slab-33675",
      "name": "vloer_V0",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 9.49,
      "countsAsGround": true,
      "evidence": "9.49 m² under 2 conditioned space footprint(s)",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#33675"
    },
    {
      "id": "slab-33813",
      "name": "vloer_V0",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 9.49,
      "countsAsGround": true,
      "evidence": "9.1 m² under 3 conditioned space footprint(s)",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#33813"
    },
    {
      "id": "slab-33951",
      "name": "vloer_V0",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 9.49,
      "countsAsGround": true,
      "evidence": "8.43 m² under 6 conditioned space footprint(s)",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#33951"
    },
    {
      "id": "slab-34089",
      "name": "vloer_V0",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 9.49,
      "countsAsGround": true,
      "evidence": "8.49 m² under 5 conditioned space footprint(s)",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#34089"
    },
    {
      "id": "slab-34227",
      "name": "vloer_V0",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 8.18,
      "countsAsGround": true,
      "evidence": "7.89 m² under 4 conditioned space footprint(s)",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#34227"
    },
    {
      "id": "slab-34365",
      "name": "vloer_V0",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 3.07,
      "countsAsGround": true,
      "evidence": "2.7 m² under 1 conditioned space footprint(s)",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#34365"
    },
    {
      "id": "slab-34622",
      "name": "vloer_V0",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 5.12,
      "countsAsGround": true,
      "evidence": "5.12 m² under 1 conditioned space footprint(s)",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#34622"
    },
    {
      "id": "slab-34761",
      "name": "vloer_V0",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 8.51,
      "countsAsGround": true,
      "evidence": "8.14 m² under 2 conditioned space footprint(s)",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#34761"
    },
    {
      "id": "slab-34899",
      "name": "vloer_V0",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 6.11,
      "countsAsGround": true,
      "evidence": "6.11 m² under 1 conditioned space footprint(s)",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#34899"
    },
    {
      "id": "slab-35037",
      "name": "vloer_V0",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 8.77,
      "countsAsGround": true,
      "evidence": "8.77 m² under 1 conditioned space footprint(s)",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#35037"
    },
    {
      "id": "slab-35175",
      "name": "vloer_V0",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 8.77,
      "countsAsGround": true,
      "evidence": "8.61 m² under 3 conditioned space footprint(s)",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#35175"
    },
    {
      "id": "slab-35313",
      "name": "vloer_V0",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 8.77,
      "countsAsGround": true,
      "evidence": "8.62 m² under 3 conditioned space footprint(s)",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#35313"
    },
    {
      "id": "slab-35451",
      "name": "vloer_V0",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 8.77,
      "countsAsGround": true,
      "evidence": "8.49 m² under 3 conditioned space footprint(s)",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#35451"
    },
    {
      "id": "slab-35589",
      "name": "vloer_V0",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 8.77,
      "countsAsGround": true,
      "evidence": "8.28 m² under 5 conditioned space footprint(s)",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#35589"
    },
    {
      "id": "slab-35727",
      "name": "vloer_V0",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 8.77,
      "countsAsGround": true,
      "evidence": "8.28 m² under 3 conditioned space footprint(s)",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#35727"
    },
    {
      "id": "slab-35865",
      "name": "vloer_V0",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 8.51,
      "countsAsGround": true,
      "evidence": "7.58 m² under 4 conditioned space footprint(s)",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#35865"
    },
    {
      "id": "slab-36003",
      "name": "vloer_V0",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 8.51,
      "countsAsGround": true,
      "evidence": "7.88 m² under 4 conditioned space footprint(s)",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#36003"
    },
    {
      "id": "slab-36141",
      "name": "vloer_V0",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 8.51,
      "countsAsGround": true,
      "evidence": "8.11 m² under 4 conditioned space footprint(s)",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#36141"
    },
    {
      "id": "slab-36279",
      "name": "vloer_V0",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 8.51,
      "countsAsGround": true,
      "evidence": "7.88 m² under 3 conditioned space footprint(s)",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#36279"
    },
    {
      "id": "slab-36417",
      "name": "vloer_V0",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 6.52,
      "countsAsGround": true,
      "evidence": "6.4 m² under 2 conditioned space footprint(s)",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#36417"
    },
    {
      "id": "slab-36555",
      "name": "vloer_V0",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 6.52,
      "countsAsGround": true,
      "evidence": "6.4 m² under 2 conditioned space footprint(s)",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#36555"
    },
    {
      "id": "slab-36693",
      "name": "vloer_V0",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 6.52,
      "countsAsGround": true,
      "evidence": "6.4 m² under 2 conditioned space footprint(s)",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#36693"
    },
    {
      "id": "slab-36831",
      "name": "vloer_V0",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 6.52,
      "countsAsGround": true,
      "evidence": "5.87 m² under 4 conditioned space footprint(s)",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#36831"
    },
    {
      "id": "slab-36969",
      "name": "vloer_V0",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 6.52,
      "countsAsGround": true,
      "evidence": "6.11 m² under 3 conditioned space footprint(s)",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#36969"
    },
    {
      "id": "slab-37107",
      "name": "vloer_V0",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 6.52,
      "countsAsGround": true,
      "evidence": "5.12 m² under 5 conditioned space footprint(s)",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#37107"
    },
    {
      "id": "slab-37245",
      "name": "vloer_V0",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 6.52,
      "countsAsGround": true,
      "evidence": "6.35 m² under 3 conditioned space footprint(s)",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#37245"
    },
    {
      "id": "slab-37383",
      "name": "vloer_V0",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 6.52,
      "countsAsGround": true,
      "evidence": "6.23 m² under 4 conditioned space footprint(s)",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#37383"
    },
    {
      "id": "slab-37521",
      "name": "vloer_V0",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 8.47,
      "countsAsGround": true,
      "evidence": "8.47 m² under 1 conditioned space footprint(s)",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#37521"
    },
    {
      "id": "slab-37659",
      "name": "vloer_V0",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 9.54,
      "countsAsGround": true,
      "evidence": "9.54 m² under 1 conditioned space footprint(s)",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#37659"
    },
    {
      "id": "slab-37797",
      "name": "vloer_V0",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 9.54,
      "countsAsGround": true,
      "evidence": "9.37 m² under 2 conditioned space footprint(s)",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#37797"
    },
    {
      "id": "slab-37935",
      "name": "vloer_V0",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 9.54,
      "countsAsGround": true,
      "evidence": "9.46 m² under 2 conditioned space footprint(s)",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#37935"
    },
    {
      "id": "slab-38073",
      "name": "vloer_V0",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 5.79,
      "countsAsGround": true,
      "evidence": "5.79 m² under 1 conditioned space footprint(s)",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#38073"
    },
    {
      "id": "slab-38211",
      "name": "vloer_V0",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 1.1,
      "countsAsGround": true,
      "evidence": "0.99 m² under 3 conditioned space footprint(s)",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#38211"
    },
    {
      "id": "slab-38349",
      "name": "vloer_V0",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 9.23,
      "countsAsGround": true,
      "evidence": "9.08 m² under 2 conditioned space footprint(s)",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#38349"
    },
    {
      "id": "slab-38487",
      "name": "vloer_V0",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 2.38,
      "countsAsGround": true,
      "evidence": "2.16 m² under 2 conditioned space footprint(s)",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#38487"
    },
    {
      "id": "slab-38625",
      "name": "vloer_V0",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 5.77,
      "countsAsGround": true,
      "evidence": "5.77 m² under 1 conditioned space footprint(s)",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#38625"
    },
    {
      "id": "slab-38763",
      "name": "vloer_V0",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 1.05,
      "countsAsGround": true,
      "evidence": "0.93 m² under 2 conditioned space footprint(s)",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#38763"
    },
    {
      "id": "slab-38901",
      "name": "vloer_V0",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 3.17,
      "countsAsGround": true,
      "evidence": "3.17 m² under 1 conditioned space footprint(s)",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#38901"
    },
    {
      "id": "slab-39140",
      "name": "vloer_V0",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 1.59,
      "countsAsGround": true,
      "evidence": "1.49 m² under 1 conditioned space footprint(s)",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#39140"
    },
    {
      "id": "slab-39279",
      "name": "vloer_V0",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 1.59,
      "countsAsGround": true,
      "evidence": "1.49 m² under 1 conditioned space footprint(s)",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#39279"
    },
    {
      "id": "slab-39417",
      "name": "vloer_V0",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 0.15,
      "countsAsGround": true,
      "evidence": "0.15 m² under 1 conditioned space footprint(s)",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#39417"
    },
    {
      "id": "slab-39574",
      "name": "vloer_V0",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 0.86,
      "countsAsGround": true,
      "evidence": "0.76 m² under 1 conditioned space footprint(s)",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#39574"
    },
    {
      "id": "slab-40102",
      "name": "vloer_V0",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 1.59,
      "countsAsGround": true,
      "evidence": "1.49 m² under 1 conditioned space footprint(s)",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#40102"
    },
    {
      "id": "slab-40394",
      "name": "vloer_V0",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 1.98,
      "countsAsGround": true,
      "evidence": "1.41 m² under 1 conditioned space footprint(s)",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#40394"
    },
    {
      "id": "slab-42729",
      "name": "vloer_V0",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 0.15,
      "countsAsGround": true,
      "evidence": "0.14 m² under 1 conditioned space footprint(s)",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#42729"
    },
    {
      "id": "slab-42867",
      "name": "vloer_V0",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 0.32,
      "countsAsGround": true,
      "evidence": "0.3 m² under 1 conditioned space footprint(s)",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#42867"
    },
    {
      "id": "slab-43098",
      "name": "vloer_V0",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 1.59,
      "countsAsGround": true,
      "evidence": "1.39 m² under 1 conditioned space footprint(s)",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#43098"
    },
    {
      "id": "slab-43828",
      "name": "vloerstort V0",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 27.32,
      "countsAsGround": true,
      "evidence": "2.94 m² under 24 conditioned space footprint(s)",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#43828"
    },
    {
      "id": "slab-61507",
      "name": "dekvloer",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 5.76,
      "countsAsGround": true,
      "evidence": "5.51 m² under 2 conditioned space footprint(s); bounds 3 conditioned space(s) per IfcRelSpaceBoundary",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#61507"
    },
    {
      "id": "slab-90819",
      "name": "dekvloer",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 1.15,
      "countsAsGround": true,
      "evidence": "1.15 m² under 1 conditioned space footprint(s); bounds 1 conditioned space(s) per IfcRelSpaceBoundary",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#90819"
    },
    {
      "id": "slab-184059",
      "name": "vloer_V0",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 3.17,
      "countsAsGround": true,
      "evidence": "3.17 m² under 1 conditioned space footprint(s)",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#184059"
    },
    {
      "id": "slab-221165",
      "name": "dekvloer",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 51.53,
      "countsAsGround": true,
      "evidence": "51.36 m² under 2 conditioned space footprint(s); bounds 2 conditioned space(s) per IfcRelSpaceBoundary",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#221165"
    },
    {
      "id": "slab-221367",
      "name": "dekvloer",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 13.4,
      "countsAsGround": true,
      "evidence": "13.06 m² under 1 conditioned space footprint(s); bounds 2 conditioned space(s) per IfcRelSpaceBoundary",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#221367"
    },
    {
      "id": "slab-221505",
      "name": "dekvloer",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 2.39,
      "countsAsGround": true,
      "evidence": "2.39 m² under 1 conditioned space footprint(s); bounds 1 conditioned space(s) per IfcRelSpaceBoundary",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#221505"
    },
    {
      "id": "slab-221652",
      "name": "dekvloer",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 6.54,
      "countsAsGround": true,
      "evidence": "6.54 m² under 1 conditioned space footprint(s); bounds 1 conditioned space(s) per IfcRelSpaceBoundary",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#221652"
    },
    {
      "id": "slab-239236",
      "name": "dekvloer",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 51.31,
      "countsAsGround": true,
      "evidence": "51.15 m² under 2 conditioned space footprint(s); bounds 2 conditioned space(s) per IfcRelSpaceBoundary",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#239236"
    },
    {
      "id": "slab-239582",
      "name": "dekvloer",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 7.09,
      "countsAsGround": true,
      "evidence": "6.94 m² under 1 conditioned space footprint(s); bounds 1 conditioned space(s) per IfcRelSpaceBoundary",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#239582"
    },
    {
      "id": "slab-239720",
      "name": "dekvloer",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 1.71,
      "countsAsGround": true,
      "evidence": "1.71 m² under 1 conditioned space footprint(s); bounds 1 conditioned space(s) per IfcRelSpaceBoundary",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#239720"
    },
    {
      "id": "slab-239941",
      "name": "dekvloer",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 9.35,
      "countsAsGround": true,
      "evidence": "9.28 m² under 1 conditioned space footprint(s); bounds 1 conditioned space(s) per IfcRelSpaceBoundary",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#239941"
    },
    {
      "id": "slab-240079",
      "name": "dekvloer",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 2.04,
      "countsAsGround": true,
      "evidence": "2.04 m² under 1 conditioned space footprint(s); bounds 1 conditioned space(s) per IfcRelSpaceBoundary",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#240079"
    },
    {
      "id": "slab-240372",
      "name": "dekvloer",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 6.38,
      "countsAsGround": true,
      "evidence": "6.12 m² under 1 conditioned space footprint(s); bounds 1 conditioned space(s) per IfcRelSpaceBoundary",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#240372"
    },
    {
      "id": "slab-240574",
      "name": "dekvloer",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 6.27,
      "countsAsGround": true,
      "evidence": "6.11 m² under 1 conditioned space footprint(s); bounds 1 conditioned space(s) per IfcRelSpaceBoundary",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#240574"
    },
    {
      "id": "slab-240724",
      "name": "dekvloer",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 5.67,
      "countsAsGround": true,
      "evidence": "5.67 m² under 1 conditioned space footprint(s); bounds 1 conditioned space(s) per IfcRelSpaceBoundary",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#240724"
    },
    {
      "id": "slab-240945",
      "name": "dekvloer",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 14.49,
      "countsAsGround": true,
      "evidence": "14.39 m² under 1 conditioned space footprint(s); bounds 1 conditioned space(s) per IfcRelSpaceBoundary",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#240945"
    },
    {
      "id": "slab-250506",
      "name": "dekvloer",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 11.48,
      "countsAsGround": true,
      "evidence": "11.38 m² under 1 conditioned space footprint(s); bounds 1 conditioned space(s) per IfcRelSpaceBoundary",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#250506"
    },
    {
      "id": "slab-250708",
      "name": "dekvloer",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 9.44,
      "countsAsGround": true,
      "evidence": "9.3 m² under 1 conditioned space footprint(s); bounds 1 conditioned space(s) per IfcRelSpaceBoundary",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#250708"
    },
    {
      "id": "slab-250910",
      "name": "dekvloer",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 6.56,
      "countsAsGround": true,
      "evidence": "6.55 m² under 1 conditioned space footprint(s); bounds 1 conditioned space(s) per IfcRelSpaceBoundary",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#250910"
    },
    {
      "id": "slab-251238",
      "name": "dekvloer",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 8.55,
      "countsAsGround": true,
      "evidence": "8.24 m² under 1 conditioned space footprint(s); bounds 1 conditioned space(s) per IfcRelSpaceBoundary",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#251238"
    },
    {
      "id": "slab-251378",
      "name": "dekvloer",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 1.28,
      "countsAsGround": true,
      "evidence": "1.28 m² under 1 conditioned space footprint(s); bounds 1 conditioned space(s) per IfcRelSpaceBoundary",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#251378"
    },
    {
      "id": "slab-251617",
      "name": "dekvloer",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 4.15,
      "countsAsGround": true,
      "evidence": "3.84 m² under 1 conditioned space footprint(s); bounds 1 conditioned space(s) per IfcRelSpaceBoundary",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#251617"
    },
    {
      "id": "slab-251755",
      "name": "dekvloer",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 3.54,
      "countsAsGround": true,
      "evidence": "3.54 m² under 1 conditioned space footprint(s); bounds 1 conditioned space(s) per IfcRelSpaceBoundary",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#251755"
    },
    {
      "id": "slab-252066",
      "name": "dekvloer",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 49.71,
      "countsAsGround": true,
      "evidence": "49.02 m² under 2 conditioned space footprint(s); bounds 2 conditioned space(s) per IfcRelSpaceBoundary",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#252066"
    },
    {
      "id": "slab-268179",
      "name": "dekvloer",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 21.03,
      "countsAsGround": true,
      "evidence": "20.23 m² under 1 conditioned space footprint(s); bounds 1 conditioned space(s) per IfcRelSpaceBoundary",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#268179"
    },
    {
      "id": "slab-269782",
      "name": "dekvloer",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 3.82,
      "countsAsGround": true,
      "evidence": "3.7 m² under 1 conditioned space footprint(s); bounds 1 conditioned space(s) per IfcRelSpaceBoundary",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#269782"
    },
    {
      "id": "slab-270104",
      "name": "dekvloer",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 0.89,
      "countsAsGround": true,
      "evidence": "0.72 m² under 1 conditioned space footprint(s); bounds 1 conditioned space(s) per IfcRelSpaceBoundary",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#270104"
    },
    {
      "id": "slab-294346",
      "name": "vloertegels",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 18.48,
      "countsAsGround": true,
      "evidence": "18.43 m² under 1 conditioned space footprint(s)",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#294346"
    },
    {
      "id": "slab-294505",
      "name": "schoonloopmat",
      "elementType": "IfcSlab",
      "predefinedType": "FLOOR",
      "storeyId": "storey-00-begane-grond",
      "projectedSqm": 1.85,
      "countsAsGround": true,
      "evidence": "1.85 m² under 1 conditioned space footprint(s)",
      "excludedReason": null,
      "ref": "ifc://IFC Schependomlaan.ifc#294505"
    }
  ],
  "openingsFile": "openings.json",
  "serviceLayers": [
    {
      "id": "structure",
      "ko": "구조 (철골)",
      "en": "Steel frame",
      "file": "structure.glb",
      "byteLength": 537192,
      "triangleCount": 7469,
      "groups": [
        "structure",
        "structure-instanced"
      ],
      "elements": 965,
      "distinctGeometries": 148,
      "instancedShapes": 94,
      "instancedPlacements": 1589,
      "drawCalls": 95,
      "flow": {
        "file": null,
        "ports": 0,
        "connections": 0,
        "directedEdges": 0,
        "drawnEdges": 0,
        "bidirectionalEdges": 0,
        "unresolvedConnections": 0,
        "ungeometried": 0,
        "unreachedEdges": 0,
        "plantNodes": 0,
        "supplySegments": 0,
        "returnSegments": 0,
        "reason": "The model declares no distribution ports, so it states no network to trace.",
        "wavelengthM": null
      }
    },
    {
      "id": "precast",
      "ko": "프리캐스트 바닥·계단",
      "en": "Precast floors & stairs",
      "file": "precast.glb",
      "byteLength": 5206788,
      "triangleCount": 90116,
      "groups": [
        "precast",
        "precast-instanced"
      ],
      "elements": 1703,
      "distinctGeometries": 1690,
      "instancedShapes": 74,
      "instancedPlacements": 681,
      "drawCalls": 75,
      "flow": {
        "file": null,
        "ports": 0,
        "connections": 0,
        "directedEdges": 0,
        "drawnEdges": 0,
        "bidirectionalEdges": 0,
        "unresolvedConnections": 0,
        "ungeometried": 0,
        "unreachedEdges": 0,
        "plantNodes": 0,
        "supplySegments": 0,
        "returnSegments": 0,
        "reason": "The model declares no distribution ports, so it states no network to trace.",
        "wavelengthM": null
      }
    },
    {
      "id": "roofing",
      "ko": "지붕 마감 (기와)",
      "en": "Roof tiling",
      "file": "roofing.glb",
      "byteLength": 6656944,
      "triangleCount": 125754,
      "groups": [
        "roofing"
      ],
      "elements": 4293,
      "distinctGeometries": 4293,
      "instancedShapes": 0,
      "instancedPlacements": 0,
      "drawCalls": 1,
      "flow": {
        "file": null,
        "ports": 0,
        "connections": 0,
        "directedEdges": 0,
        "drawnEdges": 0,
        "bidirectionalEdges": 0,
        "unresolvedConnections": 0,
        "ungeometried": 0,
        "unreachedEdges": 0,
        "plantNodes": 0,
        "supplySegments": 0,
        "returnSegments": 0,
        "reason": "The model declares no distribution ports, so it states no network to trace.",
        "wavelengthM": null
      }
    },
    {
      "id": "railings",
      "ko": "난간·발코니",
      "en": "Railings & balconies",
      "file": "railings.glb",
      "byteLength": 15344108,
      "triangleCount": 284646,
      "groups": [
        "railings",
        "railings-instanced"
      ],
      "elements": 1454,
      "distinctGeometries": 1447,
      "instancedShapes": 1,
      "instancedPlacements": 8,
      "drawCalls": 2,
      "flow": {
        "file": null,
        "ports": 0,
        "connections": 0,
        "directedEdges": 0,
        "drawnEdges": 0,
        "bidirectionalEdges": 0,
        "unresolvedConnections": 0,
        "ungeometried": 0,
        "unreachedEdges": 0,
        "plantNodes": 0,
        "supplySegments": 0,
        "returnSegments": 0,
        "reason": "The model declares no distribution ports, so it states no network to trace.",
        "wavelengthM": null
      }
    },
    {
      "id": "blockwork",
      "ko": "내벽 블록",
      "en": "Internal blockwork",
      "file": "blockwork.glb",
      "byteLength": 2942092,
      "triangleCount": 36740,
      "groups": [
        "blockwork"
      ],
      "elements": 3060,
      "distinctGeometries": 3060,
      "instancedShapes": 0,
      "instancedPlacements": 0,
      "drawCalls": 1,
      "flow": {
        "file": null,
        "ports": 0,
        "connections": 0,
        "directedEdges": 0,
        "drawnEdges": 0,
        "bidirectionalEdges": 0,
        "unresolvedConnections": 0,
        "ungeometried": 0,
        "unreachedEdges": 0,
        "plantNodes": 0,
        "supplySegments": 0,
        "returnSegments": 0,
        "reason": "The model declares no distribution ports, so it states no network to trace.",
        "wavelengthM": null
      }
    },
    {
      "id": "utilities",
      "ko": "설비 인입",
      "en": "Utility connections",
      "file": "utilities.glb",
      "byteLength": 28292,
      "triangleCount": 504,
      "groups": [
        "utilities"
      ],
      "elements": 42,
      "distinctGeometries": 0,
      "instancedShapes": 0,
      "instancedPlacements": 0,
      "drawCalls": 1,
      "note": "42 utility connections, drawn as boxes: the SketchUp export's triangles carry no information a box does not.",
      "flow": {
        "file": null,
        "ports": 0,
        "connections": 0,
        "directedEdges": 0,
        "drawnEdges": 0,
        "bidirectionalEdges": 0,
        "unresolvedConnections": 0,
        "ungeometried": 0,
        "unreachedEdges": 0,
        "plantNodes": 0,
        "supplySegments": 0,
        "returnSegments": 0,
        "reason": "The model declares no distribution ports, so it states no network to trace.",
        "wavelengthM": null
      }
    },
    {
      "id": "source-services",
      "ko": "우수배수 · 환기구",
      "en": "Rainwater drainage · vents",
      "file": "source-services.glb",
      "byteLength": 382940,
      "sha256": "7014cd14a135cf83eb2b3a536fb85ad9af4f8e2f1ce5d9234e96fecf75363f1c",
      "triangleCount": 8209,
      "placedTriangleCount": 17662,
      "triangleCountBasis": "triangleCount stores each instanced shape once; placedTriangleCount includes every placement",
      "groups": [
        "rainwater",
        "vent"
      ],
      "elements": 73,
      "distinctGeometries": 37,
      "instancedShapes": 4,
      "instancedPlacements": 18,
      "drawCalls": 7,
      "materials": 3,
      "sourceFiles": [
        {
          "role": "architectural",
          "fileName": "IFC Schependomlaan.ifc",
          "sha256": "2c3565ca1904f2aa61adab92024cf3755b2c5b21a498144d3094d7cb58cebec7",
          "types": [
            {
              "type": "IfcFlowSegment",
              "candidates": 60,
              "rendered": 60,
              "withoutRenderedMesh": 0
            },
            {
              "type": "IfcDistributionElement",
              "candidates": 13,
              "rendered": 13,
              "withoutRenderedMesh": 0
            }
          ]
        }
      ],
      "indexFile": "source-services-index.json",
      "indexSha256": "93708bee8950465970b74f9db4c6b2a7720333bce6bef0daf367813e2962b885",
      "appearance": "web-ifc tessellator RGBA, including possible default styles; no inferred finish textures. Metalness 0 and roughness 0.85 are renderer assumptions, not measured material properties.",
      "note": "Source architectural IFC geometry: 60 IfcFlowSegment named 'hwa afvoer' (rainwater drainage) and 13 IfcDistributionElement named 'vent. rooster' (ventilation grille). No distribution ports are stated, so no connectivity or flow direction is inferred. This is a partial source services layer, not a complete MEP design."
    }
  ],
  "model": {
    "file": "model.glb",
    "byteLength": 8759652,
    "triangleCount": 173937,
    "groups": [
      "slab",
      "wall",
      "stair",
      "glazing",
      "door",
      "mullion"
    ],
    "note": "Building fabric from the architectural model only: walls, slabs, stairs, glazing, doors and mullions. Nothing from the subcontractor models is in this file — the steel frame, precast floors, roof tiling, railings and blockwork are their own layers.",
    "serviceNote": "Six layers from the 33 subcontractor models in the archive's coordination set (BIMsight Projectdata1). Five carry each supplier's geometry as modelled — a shape placed twice or more is stored once and instanced, everything else is merged. Every file declares millimetres and no distribution port, so no layer animates flow. The utilities layer is the exception and says so under its row: its 42 SketchUp objects are drawn as boxes."
  },
  "invalidDiagnostics": {
    "note": "No space-boundary strips resolved in this file; there is no sum to refute.",
    "rawSumSqm": 0,
    "rawSumByElementType": {}
  },
  "architecturalDetails": {
    "id": "details",
    "ko": "건축 상세",
    "en": "Architectural details",
    "file": "architectural-details.glb",
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    "sha256": "041c70cdd72cb39b1b33230418b1c9a3abaa164edfbafa720a70cda0df4e36ae",
    "triangleCount": 28221,
    "placedTriangleCount": 41869,
    "triangleCountBasis": "triangleCount stores each instanced shape once; placedTriangleCount includes every placement",
    "groups": [
      "covering"
    ],
    "elements": 1214,
    "distinctGeometries": 656,
    "instancedShapes": 13,
    "instancedPlacements": 339,
    "drawCalls": 28,
    "materials": 15,
    "sourceFiles": [
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        "sha256": "2c3565ca1904f2aa61adab92024cf3755b2c5b21a498144d3094d7cb58cebec7",
        "types": [
          {
            "type": "IfcCovering",
            "candidates": 1262,
            "rendered": 1214,
            "withoutRenderedMesh": 48
          }
        ]
      }
    ],
    "indexFile": "architectural-details-index.json",
    "indexSha256": "97738625b5904ec8e2ee3fdd9171a5fb16b287f0d6be91da68c88bb8740504c3",
    "appearance": "web-ifc tessellator RGBA, including possible default styles; no inferred finish textures. Metalness 0 and roughness 0.85 are renderer assumptions, not measured material properties.",
    "note": "Selected source IFC entity classes omitted from the core fabric layer. Original tessellated geometry and placements; repeated shapes use GPU instancing. Not a claim of complete architectural or fabrication detail. Existing services remain separate.",
    "selectionNote": "Architectural IfcCovering only; supplier steel, precast and railing layers already carry their own source models. Architectural beam, column and railing copies are excluded to avoid overlapping those layers."
  },
  "mepCoverage": {
    "schemaVersion": 1,
    "status": "source_geometry_published",
    "publishedLayerIds": [
      "utilities",
      "source-services"
    ],
    "typedElementCount": 73,
    "distributionPortCount": 0,
    "sources": [
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        "schema": "IFC2X3",
        "typedElementCount": 73,
        "entitiesByType": {
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          "IfcDistributionElement": 13
        },
        "distributionPorts": 0,
        "systems": 0
      },
      {
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      {
        "role": "geelen-v1",
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      {
        "role": "geelen-v2",
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      {
        "role": "geelen-v3",
        "fileName": "GEELEN-Breedplaat V3.ifc",
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      {
        "role": "geelen-roof",
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      {
        "role": "waardo-hollowcore",
        "fileName": "WAARDO-Kanaalplaatvloer.ifc",
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      {
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      {
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      {
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      {
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      {
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      {
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      {
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      },
      {
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      {
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      {
        "role": "ytong-general",
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      {
        "role": "ytong-05",
        "fileName": "YTONG-Kavel 05.ifc",
        "sha256": "d104efd1bec2da49abc35fc6a725a1bb139451356106f3ce66892a28e1c6d761",
        "schema": "IFC2X3",
        "typedElementCount": 0,
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      },
      {
        "role": "ytong-06",
        "fileName": "YTONG-Kavel 06.ifc",
        "sha256": "e0eb9daffcc2b2ea3d395689d00a34961b479b48c176e4e3b947f41fd1cc3539",
        "schema": "IFC2X3",
        "typedElementCount": 0,
        "entitiesByType": {},
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      },
      {
        "role": "ytong-07",
        "fileName": "YTONG-Kavel 07.ifc",
        "sha256": "e6ae54f84938e3be03990691c3826dd630178cab92d506ddc8efe00d26f7e35e",
        "schema": "IFC2X3",
        "typedElementCount": 0,
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      },
      {
        "role": "ytong-08",
        "fileName": "YTONG-Kavel 08.ifc",
        "sha256": "b3b4ee853e8737189ce27f298b8f622b4772b9629a1a8e1c27b9abd97d231758",
        "schema": "IFC2X3",
        "typedElementCount": 0,
        "entitiesByType": {},
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      },
      {
        "role": "ytong-09",
        "fileName": "YTONG-Kavel 09.ifc",
        "sha256": "188195bd08e82f62568e3d5845d544b74fb189c5ef1d1e916ee407417ca3fe19",
        "schema": "IFC2X3",
        "typedElementCount": 0,
        "entitiesByType": {},
        "distributionPorts": 0,
        "systems": 0
      },
      {
        "role": "ytong-10",
        "fileName": "YTONG-Kavel 10.ifc",
        "sha256": "add92d8fa490989ecf180464dfdb272ae0a377a38ad2651d56509ad8e67d6a95",
        "schema": "IFC2X3",
        "typedElementCount": 0,
        "entitiesByType": {},
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        "systems": 0
      },
      {
        "role": "hb-utilities",
        "fileName": "HB_Nutsvoorzieningen.ifc",
        "sha256": "f85baa7f5c45feffb45783464a7d01a1679f784487b6f866dfcaabdd1a86caf7",
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    ],
    "summary": {
      "ko": "건축 IFC의 우수배수 60개·환기구 13개와 별도 공급업체 유틸리티 연결 형상을 표시합니다. 포트가 없어 흐름 방향은 추정하지 않습니다.",
      "en": "Shows 60 rainwater drainage elements and 13 ventilation grilles from the architectural IFC, plus the supplier utility connections. No distribution ports; no inferred flow direction."
    },
    "limitations": [
      {
        "ko": "해시로 고정된 IFC 파일에서 해당 스키마의 설비 분류 상속을 확인한 요소 목록이며, 실제 설치 설비의 완전성 조사가 아닙니다.",
        "en": "Inventory of distribution occurrence classes using each pinned IFC file's schema inheritance, not a completeness survey of installed services."
      },
      {
        "ko": "분야별·수정본 모델 간 요소가 중복될 수 있으며 파일 간 설비 중복 제거는 하지 않았습니다.",
        "en": "Counts include overlapping discipline and revision models; there is no cross-file equipment deduplication."
      },
      {
        "ko": "일반 IfcBuildingElementProxy·IfcFurnishingElement는 원본 근거 없이 MEP로 분류하지 않습니다.",
        "en": "Generic IfcBuildingElementProxy and IfcFurnishingElement occurrences are not classified as MEP without source evidence."
      }
    ]
  },
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    "byteLength": 1601832,
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    "elements": 1640,
    "triangleCount": 76793,
    "placedTriangleCount": 173937,
    "drawCalls": 124,
    "bindings": [
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        "group": "slab",
        "sourceRole": "architectural",
        "status": "single_material",
        "assemblyRef": null,
        "materialRef": "ifc://IFC Schependomlaan.ifc#482",
        "materialNames": [
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        ],
        "relationRef": "ifc://IFC Schependomlaan.ifc#5719",
        "basis": "occurrence",
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        "sourceRole": "architectural",
        "status": "layer_set",
        "assemblyRef": "ifc://IFC Schependomlaan.ifc#33253",
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        "relationRef": "ifc://IFC Schependomlaan.ifc#33258",
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        "representativeLayer": {
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          "thicknessM": 0.2,
          "ref": "ifc://IFC Schependomlaan.ifc#33236"
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      },
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        "assemblyRef": null,
        "materialRef": "ifc://IFC Schependomlaan.ifc#34626",
        "materialNames": [],
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        "basis": "occurrence",
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        "sourceRole": "architectural",
        "status": "layer_set",
        "assemblyRef": "ifc://IFC Schependomlaan.ifc#39432",
        "materialRef": "ifc://IFC Schependomlaan.ifc#39436",
        "materialNames": [
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          "99 Isolatie - EPS"
        ],
        "relationRef": "ifc://IFC Schependomlaan.ifc#39437",
        "basis": "occurrence",
        "assemblyName": "IFC_vloer_EPS_stortstrook_Rc=3,00",
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      {
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