For a dependent offset alignment, use this tab to set properties of the offset.
Parent Alignment
- Name
-
Specifies the name of the parent alignment, which controls the offset alignment.
- Nominal Offset Value
-
Specifies the offset distance from the parent alignment.
- Start Station – Lock to Start of Parent
-
Specifies the station of the parent alignment where the offset alignment begins. Enter a station value, or select the check box to begin the offset at the start of the parent alignment.
- End Station – Lock to End of Parent
-
Specifies the station of the parent alignment where the offset alignment ends. Enter a station value, or select the check box to extend the offset to the end of the parent alignment.
- Update Mode
-
Specifies whether the offset alignment reacts to edits of the parent alignment:
-
Dynamic. The offset is updated with any changes to the parent alignment.
-
Static. The offset alignment geometry is preserved, unaffected by changes to the parent alignment.
- Lock Mode
-
For dynamic update mode, specifies how the offset alignment is associated with the geometry of the parent alignment:
-
Geometry Locking. The start and end of the offset are located in relation to the nearest geometry points on the parent alignment.
-
Station Locking. The start and end of the offset are locked to the specified start and end stations on the parent alignment.
-
Superelevation Type
- Specifies whether the offset alignment can have superelevation or cant applied to it.
- Superelevation. The offset alignment can have superelevation values applied to it.
- Cant. The offset alignment can have cant values applied to it. When you create an offset alignment from a parent alignment which has Rail specified as its alignment type, the
Superelevation Type is set to
Cant by default.
Note: When you select this option, the
Rail Parameters tab also becomes available in the Alignment Properties dialog box.