Associates an ElementType to an Element instance, associating the ElementType’s information. BuildingElement may be any BuildingElement subtypes: Beam, Column, Simple Slab, Simple Wall, Member, Pile, Ramp, Stair or ProxyElement.. Similarly, BuildingElementType may be any of the matching subtypes.Some of these Elementand Element types have specific attributes. these are addressed in PCI-053 and PCI-080