IfcRelSpaceBoundary_1053204IfcRelSpaceBoundary_1053233IfcRelSpaceBoundary_1053261IfcRelSpaceBoundary_1053289IfcRelSpaceBoundary_1053317IfcRelSpaceBoundary_1053345IfcRelSpaceBoundary_1053375IfcRelSpaceBoundary_1053403IfcRelSpaceBoundary_1053431IfcRelSpaceBoundary_1053459IfcRelSpaceBoundary_1053487IfcRelSpaceBoundary_1053515IfcRelSpaceBoundary_1053543IfcRelSpaceBoundary_1053571IfcRelSpaceBoundary_1053599IfcRelSpaceBoundary_1053627IfcRelSpaceBoundary_1053671