OptionalDescriptionOptionalDirectionOptionalFlightExplicit GlobalId for the IfcStairFlight; generated when omitted.
OptionalGlobalExplicit GlobalId for the IfcStair (22-char IFC GUID); generated when omitted.
OptionalNameNumber of risers (a positive integer).
OptionalObjectFoot of the first riser, storey-local (metres).
OptionalPredefinedIfcStair PredefinedType / ShapeType. Default STRAIGHT_RUN_STAIR.
Riser height (metres).
OptionalTagTread length / going (metres).
OptionalWaistWaist thickness measured perpendicular to the pitch line (metres). When set the flight's underside follows the pitch; omitted, the flight is solid down to its base. Must leave material under the top tread.
Clear width across the run (metres).
Run direction in the XY plane, radians (0 = +X). Default 0.