6.1.5.2 Qto_BuildingElementProxyQuantities
6.1.5.2.1 Semantic definition
Quantity set for Building Element Proxies.
6.1.5.2.2 Applicable entities
6.1.5.2.3 Properties
| Name | Data Type | Description | |
|---|---|---|---|
| NetSurfaceArea | IfcQuantityArea | 
 Net surface area of the object, normally generated as perimeter * length + 2 * cross section area taking into account possible processing features (cut-out's, etc.) or openings and recesses.  | 
|
| NetVolume | IfcQuantityVolume | 
 Total net volume of the object, taking into account possible processing features (cut-out's, etc.) or openings and recesses.  |