| Column | B | IfcColumn | Geometry |
| Length | L | Length (one direction of the non-projected foot print area) of the slab. It shall only be provided, if the slab is rectangular. | Number |
| CrossSectionArea | S | Total area of the cross section (or profile) of the Column. | Number |
| OuterSurfaceArea | N | Total area of the extruded surfaces of the Column (not taking into account the end cap areas), normally generated as perimeter * length. | Number |
| GrossSurfaceArea | G | Total area of the Column, normally generated as perimeter * length + 2 * cross section area. It is the sum of OuterSurfaceArea + (2 x CrossSectionArea) and shall only be given, if the OuterSurfaceArea and CrossSectionArea cannot be established separately. | Number |
| NetSurfaceArea | N | Net surface area of the Column, normally generated as perimeter * length + 2 * cross section area taking into account possible processing features (cut-out's, etc.) or openings and recesses. | Number |
| GrossVolume | V | Total gross volume of the Column, not taking into account possible processing features (cut-out's, etc.) or openings and recesses. | Number |
| NetVolume | V | Total net volume of the Column, taking into account possible processing features (cut-out's, etc.) or openings and recesses | Number |
| GrossWeight | W | Total gross weight of the Column without add-on parts, not taking into account possible processing features (cut-out's, etc.) or openings and recesses. | Number |
| NetWeight | W | Total net weight of the Column without add-on parts, taking into account possible processing features (cut-out's, etc.) or openings and recesses. | Number |