| Name | Type | Description | 
| AirVolume | 
P_SINGLEVALUE
/
IfcVolumeMeasure
 | 
Relative volume of air stratum constituents.
 | 
| BouldersVolume | 
P_SINGLEVALUE
/
IfcVolumeMeasure
 | 
Relative volume of boulders (typically larger than 200mm) stratum constituents.
 | 
| ClayVolume | 
P_SINGLEVALUE
/
IfcVolumeMeasure
 | 
Relative volume of clay (typically smaller than 0.002mm) stratum constituents.
 | 
| CobblesVolume | 
P_SINGLEVALUE
/
IfcVolumeMeasure
 | 
Relative volume of cobbles (typically larger than 63mm) stratum constituents.
 | 
| CompositeFraction | 
P_SINGLEVALUE
/
IfcCompositeFraction
 | 
Denomination into soil groups by composite fractions.
 | 
| ContaminantVolume | 
P_SINGLEVALUE
/
IfcVolumeMeasure
 | 
Relative volume of contaminant stratum constituents.
 | 
| FillVolume | 
P_SINGLEVALUE
/
IfcVolumeMeasure
 | 
Relative volume of fill (controlled placement of anthropogenic soil) stratum constituents.
 | 
| GravelVolume | 
P_SINGLEVALUE
/
IfcVolumeMeasure
 | 
Relative volume of gravel (typically larger than 2mm) stratum constituents.
 | 
| OrganicVolume | 
P_SINGLEVALUE
/
IfcVolumeMeasure
 | 
Relative volume of organic (peat/humus) stratum constituents especially soil.
 | 
| RockVolume | 
P_SINGLEVALUE
/
IfcVolumeMeasure
 | 
Relative volume of rock stratum constituents.
 | 
| SandVolume | 
P_SINGLEVALUE
/
IfcVolumeMeasure
 | 
Relative volume of sand (typically smaller than 2mm) stratum constituents.
 | 
| SiltVolume | 
P_SINGLEVALUE
/
IfcVolumeMeasure
 | 
Relative volume of silt (typically smaller than 0.063mm) stratum constituents.
 | 
| WaterVolume | 
P_SINGLEVALUE
/
IfcVolumeMeasure
 | 
Relative volume of water stratum constituents.
 |