Elemental Cost Planning Classification (0-9) Assigns category classification to building elements based on RICS's New Rules of Measurement. It defines the order of cost estimating and elemental cost planning for building maintenance works. 'Apply' creates a Classification Reference for selected IFC entity, using RICS-required attributes derived from the item that you choose in the following list. IfcElement IfcDoorStyle IfcBuildingElementType IfcDistributionElementType IfcElementComponentType IfcFurnishingElementType IfcTransportElementType IfcWindowStyle IfcGroup