Educational IFC4 door property presence check Saeed Azarshab - original educational example 1.0 Sandbox example: every applicable IFC4 door needs a non-empty Pset_DoorCommon.FireRating property of type IFCLABEL. No permitted rating values or legal fire-resistance duration are specified. This is an information check, not design approval, a fire assessment or a compliance certificate. 2026-11-11 Explore information requirements using an IDS 1.0-capable checker. Review scope and project requirements before adapting. XML schema checking alone does not establish software interoperability or valid IFC model data. Sandbox training only IFCDOOR Pset_DoorCommon FireRating