Calculations Based on Room GroupsSave PDFSave selected topicSave selected topic and subtopicsSave all topicsShareShare to emailCopy topic URLLast UpdatedMar 16, 20261 minute readEngineeringE3D DesignUnified EngineeringE3D Design (Unified Engineering) Describes the calculations based on room groups. Related LinksCalculation of Surface AreasCalculation of Ceiling AreaCalculation of Floor AreaCalculation of Air VolumesCalculation of Flood VolumesCalculation of Inventories