7.5.5.14 Qto_DuctSegmentBaseQuantities
7.5.5.14.1 Semantic definition
Base quantities that are common to the definition of all types and occurrences of duct segments.
7.5.5.14.2 Applicable entities
7.5.5.14.3 Properties
| Name | Data Type | Description | |
|---|---|---|---|
| Length | IfcQuantityLength | 
 The length of the object. Calculated at midpoint of cross-section, equal to the distance between inlet and outlet ports.  | 
|
| GrossCrossSectionArea | IfcQuantityArea | 
 Area of the cross section. Including the duct itself and the interior flow space.  | 
|
| NetCrossSectionArea | IfcQuantityArea | 
 Area of the cross section of the object. Excluding the interior flow space.  | 
|
| OuterSurfaceArea | IfcQuantityArea | 
 Total area of the surfaces of the object (not taking into account the end cap areas), normally generated as perimeter * length in case of extrusions.  | 
|
| GrossWeight | IfcQuantityWeight | 
 Total Gross Weight of the object without any add-on parts and not taking into account possible processing features (cut-out's, etc.) or openings and recesses.  |