| Name | Type | Description |
| FaceExcavationType |
P_ENUMERATEDVALUE
/
IfcLabel
/
PEnum_FaceExcavationType |
Face excavation type.
|
| IsDriveDirectedAlongChainage |
P_SINGLEVALUE
/
IfcBoolean
|
Specifies whether the tunnel drive direction agrees with the positive chainage direction (true) or if the tunnel drive direction is reversed (false).
|
| TunnelInclination |
P_ENUMERATEDVALUE
/
IfcLabel
/
PEnum_TunnelInclination |
Specifies the tunnel inclination relative to the drive direction as specified by IsDriveDirectedAlongChainage.
|
| DriveInclination |
P_ENUMERATEDVALUE
/
IfcLabel
/
PEnum_DriveInclination |
Specifies the tunnel drive inclination.
|
| ExcavationFaceInclination |
P_ENUMERATEDVALUE
/
IfcLabel
/
PEnum_ExcavationFaceInclination |
Specifies the inclination of the tunnel face.
|
| MaxUnsupportedExcavationLength |
P_SINGLEVALUE
/
IfcNonNegativeLengthMeasure
|
Maximum unsupported length of excavation at the tunnel face.
|