Industry Foundation Classes interoperability standard

Document status: reviewed. Canonical source.

Summary

IFC is a large ISO-standardized cross-vendor information model with modular core/shared/domain/resource schemas and multiple machine representations. Its history demonstrates both the durability and complexity cost of broad semantic interchange.

NUIF relevance

Borrow rigorous schemas, profiles and machine-readable listings; avoid uncontrolled ontology expansion. NUIF should prove a small implementable core before adding domain-specific semantics.