This subassembly is a general purpose utility to add a surface link by specifying its width and slope.
Either a % slope or ratio slope value may be given. An alignment or profile can be used when building a corridor model to allow variable width and slope.
Attachment
The attachment point is at the inside edge of the link. This subassembly can be inserted in the left or right direction from the attachment point.
Input Parameters
Note: All dimensions are in meters or feet unless otherwise noted. All slopes are in run-over-rise form (for example, 4 : 1) unless indicated as a percent slope with a “%” sign.
|
Parameter |
Description |
Type |
Default |
|---|---|---|---|
|
Side |
Specifies which side to place the subassembly |
Left/Right |
Left |
|
Width |
Width of the lane from the offset of the inside edge to the offset of the outside edge |
Numeric, positive |
3.0 10.0 ft |
| Use Superelevation Slope |
Specifies to use superelevation slope |
Selection list | No |
| Slope Direction |
Specifies whether the link slopes away from the crown or towards the crown |
Selection list | Away from Crown |
|
Slope |
% slope of the link. Negative slopes go downward in the direction inserted. |
Numeric |
2 (%), (or 2:1) |
|
Point Codes |
A list of surface codes to be assigned to the outside edge of the link |
Comma-separated string |
P2 |
|
Link Codes |
A list of surface codes to be assigned to the link |
Comma-separated string |
Top, Datum |
|
Omit Link |
This parameter adds or removes the surface link. |
Yes\No |
No |
|
Use Superelevation |
Specifies to use superelevation slope for the shoulder |
Selection List: a) Outside Shoulder Slope, b) Inside Shoulder Slope, c)Outside Lane, d)Inside Lane, e) None |
None |
Target Parameters
This section lists the parameters in this subassembly that can be mapped to one or more target objects, such as a surface, alignment, or profile object in a drawing. For more information, see To Specify Corridor Targets.
|
Parameter |
Description |
Status |
|---|---|---|
|
Width |
May be used to override the fixed link Width and tie the end-of-link to an offset alignment. The following object types can be used as targets for specifying this offset: alignments, polylines, feature lines, or survey figures. |
Optional |
|
%Slope |
May be used to override the fixed % Slope and tie the end-of-link to a profile. The following object types can be used as targets for specifying this: profiles, 3D polylines, feature lines, or survey figures. |
Optional |
Output Parameters
|
Parameter |
Description |
Type |
|---|---|---|
|
Begin Offset |
+/- offset of the beginning of the link |
Numeric |
|
Begin Elevation |
Elevation of the beginning of the link |
Numeric |
|
End Offset |
+/- offset of the end of the link |
Numeric |
|
End Elevation |
Elevation of the end of the link |
Numeric |
Behavior
The link is added in the direction of insertion starting at the attachment point and going the given width and slope. If an offset horizontal alignment name is assigned to the Width during corridor modeling, the width of the lane will vary to match the offset of the alignment. If a profile name is assigned to the Slope, the slope is adjusted to match the profile elevation at the end of the link.
This subassembly includes an optional input parameter named Use Superelevation Slope that lets you specify to use the superelevation slope for the shoulder. This parameter can be set to a) Outside shoulder slope, b) Inside shoulder slope, c)Outside Lane, d)Inside Lane, or e) None. None is the default setting.
Layout Mode Operation
In layout mode, this subassembly displays the link at the given width and slope.
Point, Link, and Shape Codes
None.
Coding Diagram
