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    Industry Foundation Classes (IFC) 4.3 - Railway Domain (openBIM Schema)

    IFC-4-3-RAILActiveFree full text

    Issuing body: buildingSMART International · Version: IFC 4.3.2 (ISO 16739-1:2024, Edition 2) · Published: 2024-03-01

    Link verified July 22, 2026

    Open official source (free)

    Scope

    IFC 4.3 (published as ISO 16739-1:2024, Edition 2) is buildingSMART's open, vendor-neutral BIM data schema extended to cover infrastructure domains -- Railways, Roads, Ports and Waterways -- alongside its existing buildings scope, adding railway-specific entities for track and rail elements, alignment geometry including cant, and earthworks. It is the openBIM schema increasingly specified on European rail infrastructure projects for exchanging asset, geometry and lifecycle data across design, construction and asset-management toolchains.

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