{
  "component": "Culvert/ Drains",
  "discipline": "ARC",
  "authorities": [
    "BCA",
    "PUB"
  ],
  "source": "CORENET X Code of Practice v3.1",
  "source_title": "CORENET X — IFC-SG Glossary of Identified Components",
  "source_url": "https://info.corenet.gov.sg/ifc-sg/bim-data-(ifc-sg)/glossary-of-identified-components?id=e0a70a7b-d185-49ac-ae25-a0ba863ee7eb",
  "source_id": "e0a70a7b-d185-49ac-ae25-a0ba863ee7eb",
  "page_range": [
    26,
    26
  ],
  "ifc_binding_count": 2,
  "parameter_count": 10,
  "declarative_only_bindings": 1,
  "ifc_bindings": [
    {
      "ifc_entity": "IfcCivilElement",
      "ifc_subtype": "COMMONDRAIN, CROSSCULVERT, CULVERT, ENTRANCECULVERT, EXTERNALDRAIN, INTERNALDRAIN, OUTLETDRAIN, ROADSIDEDRAIN, TRENCH",
      "ifc_subtypes": [
        "COMMONDRAIN",
        "CROSSCULVERT",
        "CULVERT",
        "ENTRANCECULVERT",
        "EXTERNALDRAIN",
        "INTERNALDRAIN",
        "OUTLETDRAIN",
        "ROADSIDEDRAIN",
        "TRENCH"
      ],
      "scope": null,
      "no_properties_required": false,
      "header_kind": "6col",
      "pages": [
        26
      ],
      "parameters": [
        {
          "sn": 1,
          "property": "Diameter",
          "type": "Length",
          "unit": "mm",
          "input_limited": false
        },
        {
          "sn": 2,
          "property": "Gradient",
          "type": "Text",
          "input_limited": false
        },
        {
          "sn": 3,
          "property": "Height",
          "type": "Length",
          "unit": "mm",
          "input_limited": false
        },
        {
          "sn": 4,
          "property": "Length",
          "type": "Length",
          "unit": "mm",
          "input_limited": false
        },
        {
          "sn": 5,
          "property": "LoadBearing",
          "type": "Boolean",
          "input_limited": true,
          "allowed_values": [
            "TRUE",
            "FALSE"
          ],
          "allowed_values_source": "boolean (CoP examples: TRUE / FALSE)",
          "examples": [
            "TRUE / FALSE"
          ]
        },
        {
          "sn": 6,
          "property": "Material",
          "type": "Text",
          "input_limited": false
        },
        {
          "sn": 7,
          "property": "SystemName",
          "type": "Text",
          "input_limited": false
        },
        {
          "sn": 8,
          "property": "SystemType",
          "type": "Text",
          "input_limited": false,
          "reference_values": [
            "Sanitary",
            "Kitchen Fresh Air",
            "Sewerage",
            "Parking Place Exhaust Air",
            "Drainage",
            "Staircase Pressurisation Air",
            "Rainwater",
            "Genset Exhaust Air",
            "Potable Water",
            "Pollution Control Equipment Exhaust Air",
            "Sprinkler",
            "Kitchenhood Exhaust Air",
            "Foam Sprinkler",
            "PWCS Fresh Air",
            "Foam Fire Extinguishing",
            "Wet Riser",
            "Dry Riser",
            "Trade Effluent"
          ],
          "reference_values_source": "canonical List of System Types (System glossary page, retrieved 2026-07-19)",
          "examples": [
            "Rainwater",
            "Drainage"
          ],
          "example_format_acmv": "{spacename} / {equipment} + Fresh Air / Exhaust Air"
        },
        {
          "sn": 9,
          "property": "Thickness",
          "type": "Length",
          "unit": "mm",
          "input_limited": false
        },
        {
          "sn": 10,
          "property": "Width",
          "type": "Length",
          "unit": "mm",
          "input_limited": false
        }
      ]
    },
    {
      "ifc_entity": "IfcBuildingElementProxy",
      "ifc_subtype": "DROPINLETCHAMBER",
      "ifc_subtypes": [
        "DROPINLETCHAMBER"
      ],
      "scope": null,
      "no_properties_required": true,
      "header_kind": "6col",
      "pages": [
        26
      ],
      "parameters": []
    }
  ]
}