Schemas / BIM / OpenBIM

rig.bim.relation

v0.31.0 · draft 3 fields 3 required

Fields

FieldTypeMeaning
kind enumvoids · fills · connects · aggregates · services required voids, fills, connects, aggregates, or services
a entity required First participant
b entity required Second participant

OpenBIM relationship between two entities. Format when present - this component lives on its own entity (same pattern as rig.mod.binding).

kind a b Meaning
voids opening host element Opening voids the wall / slab (IfcRelVoidsElement)
fills door / window opening Filler fills the opening (IfcRelFillsElement)
connects element element Connection / join (IfcRelConnects*)
aggregates whole part Aggregation (IfcRelAggregates)
services system / element element Services / assignment (IfcRelServicesBuildings, ...)

Many relations per element - do not hang a single host field on the wall. Scene containment (element on a storey) stays on rig.spatial.relationship. Hosted openings are not rig.cad.boolean.

JSON Schema

Resolves at https://rig.works/schemas/rig.bim.relation.schema.jsonraw file.

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://rig.works/schemas/rig.bim.relation.schema.json",
  "title": "rig.bim.relation",
  "type": "object",
  "additionalProperties": false,
  "properties": {
    "kind": {
      "type": "string",
      "enum": [
        "voids",
        "fills",
        "connects",
        "aggregates",
        "services"
      ]
    },
    "a": {
      "$ref": "./_defs.schema.json#/$defs/entity"
    },
    "b": {
      "$ref": "./_defs.schema.json#/$defs/entity"
    }
  },
  "required": [
    "kind",
    "a",
    "b"
  ]
}

Seen in

bim-model.json