BIMei Taxonomy
A client-neutral, publicly licensed vocabulary for describing BIM resources. It pairs one subject taxonomy — what a resource is about — with classification facets that describe the resource itself: what form it takes, when in the asset lifecycle it applies, how it is delivered and how it is scheduled. Every concept below belongs to one immutable release.
Subject taxonomy (27)
What a resource is about. Its members are BIM Dictionary Terms with their own identity, referenced here rather than redefined.
Classification facets (17)
Controlled values describing the resource itself. A classified resource — a Course, say — carries a subject from the taxonomy above plus a value from each facet that applies to it. Each facet is independent; none is a sub-division of another.
-
Delivery modes
3 conceptsControlled values describing whether delivery is online, in person, or blended.
Browse Delivery modes → -
Lifecycle relevance
6 conceptsMulti-select resource relevance across planning, readiness, delivery, transition, in use, and renewal or retirement; not a mandatory sequence or a standards-conformance claim.
Browse Lifecycle relevance → -
Resource kinds
6 conceptsControlled forms used to describe what kind of resource something is. A standard kind describes resource form; a referenced standard retains its publisher identity.
Browse Resource kinds → -
Scheduling
2 conceptsControlled values describing whether participation is scheduled or self-paced.
Browse Scheduling →
Release identity
- Release ID
- 3c48bb82-cdd8-52bf-81ba-e37698258b9b
- Content version
- 1.1.0
- Release status
- approved
- Payload SHA-256
- ed5536dd6d1d3803a1b123cc75dcfd48e969237e64fdc40edbc39ee34d4301fe
- Manifest SHA-256
- ac6d8892169e8b088657fac46bbff52c5c6653dbf0829852698e387c240c5ea0
- Generated
- 2026-08-18T20:51:35.883Z
- ONT decision
- D13;OWNER-APPROVAL-2026-08-18
- Previous release
- 0e0965c8-2144-5f34-b67b-88076a3883d4
- Data licence
- CC-BY-4.0
You are viewing the release ONT currently names as active. To cite or pin this exact content, use the release-scoped permalink: /taxonomy-releases/3c48bb82-cdd8-52bf-81ba-e37698258b9b. That URL never changes meaning, and there is no /latest alias.
Where this taxonomy's authority sits
ONT is the public taxonomy authority. It is the only surface that admits a release and names the active one; releases are immutable and consumers pin an exact release ID rather than following a moving pointer. BIMd remains the editorial authority for BIMe Terms, so Term-identified concepts are carried here as references, never as copies. SMC remains the evidence and assignment authority: it holds the governed classification receipts that bind a subject to a concept in an exact release. Those receipts are not published here — this browser shows the vocabulary, not who has been classified with it.
Machine representations
Release metadata: /api/taxonomy-releases/3c48bb82-cdd8-52bf-81ba-e37698258b9b. Each scheme is also published as SKOS in both syntaxes, scoped to this exact release.
| Scheme | JSON-LD | Turtle |
|---|---|---|
| Delivery modes | JSON-LD | Turtle |
| Lifecycle relevance | JSON-LD | Turtle |
| Resource kinds | JSON-LD | Turtle |
| Scheduling | JSON-LD | Turtle |
| Topics | JSON-LD | Turtle |
Release artefacts
The signed release directory is distributed from an access-controlled repository. ONT holds and re-emits the two core artefacts itself — the release manifest and the collection payload — byte-for-byte as admitted, so they can be fetched publicly and checked against the SHA-256 recorded below. The remaining artefacts are identified here but are not served by ONT.
| Artefact | Where | Size | SHA-256 |
|---|---|---|---|
| CHANGELOG.md | Access-controlled | 931 B | 10a74e3e049b4c96e93eef22e96e8011a83878312f2e336932e39b8f3e95fc3b |
| LICENSE-CODE | Access-controlled | 11.3 kB | fe566d54000b11b615c5b0a46bfa8a129de2781d33daad36bd88c2f1ee8ce2e7 |
| LICENSE-DATA | Access-controlled | 18.5 kB | 028f4e1b8a2cba6b3cfed5a522cb0319d0b61427533e52b25d134397e5d2846f |
| LICENSING.md | Access-controlled | 1.7 kB | 11b35c895268eb18ba75df0645c1ddb80305bfc58e6c0e7adb91aae4627e187e |
| release-manifest.json | Served by ONT | 1.8 kB | ac6d8892169e8b088657fac46bbff52c5c6653dbf0829852698e387c240c5ea0 |
| SHA256SUMS | Access-controlled | 581 B | e5a2c3d47c1451f2487093684b0c41b8b1ff62fa87586d92437456d8dc65371f |
| taxonomy-collection.json | Served by ONT | 19.5 kB | ed5536dd6d1d3803a1b123cc75dcfd48e969237e64fdc40edbc39ee34d4301fe |
| THIRD_PARTY_NOTICES | Access-controlled | 1.2 kB | 7e3539a86668d44d88430c70d50b4d0092515550a9444ae24bfe0af83fea090b |
Related
The frozen 25-Topic BIMei Topic Taxonomy is a separate, earlier registry Construct. It is kept for continuity and is not this release.