BIM and RDI work on different artefacts. BIM works on the design model, the federated representation of intent. RDI works on the as-built record, the time-aligned representation of reality. The artefacts are related but not interchangeable.
What BIM does
BIM coordinates design across disciplines. It catches clashes before they reach the trades. It carries non-graphical data that supports procurement and operation. A BIM-led project arrives on site with a coherent intent and a clear coordinated model. That work is irreplaceable.
What RDI adds
RDI adds the reality side of the equation. The captured record makes deviation visible. The workflows turn deviation into NCRs and dispositions. The as-built record references both the model and the captured evidence, which makes the handover pack consistent and the warranty period easier.
- BIM tells the project what was intended.
- RDI tells the project what was built.
- Together, they tell the project where the two diverge and what was done about it.
Knowledge base articles are intended as durable reference. For shorter definitions, see the glossary. For shorter essays, browse field notes.