This subassembly inserts a paved and an earthen (unpaved or gravel) shoulder with all pavement, base, and subbase layers extended to the subgrade shoulder point.
Attachment
The attachment point is at the beginning of the first link. This subassembly is sensitive to the direction being inserted. Positive widths increase the offset from the attachment point in the direction inserted.
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 |
Specifes to insert the subassembly either on the right or the left side of the attachment point. |
Left/Right | Right |
| Pavement 1 Depth | Depth of Pavement 1. If there is no Pavement 1 layer, a zero depth should be used. | Numeric, non-negative |
0.025 m 0.083 ft |
| Pavement 2 Depth | Depth of Pavement 2. If there is no Pavement 2 layer, a zero depth should be used. | Numeric, non-negative |
0.025 m 0.083 ft |
| Pavement 3 Depth | Depth of Pavement 3. If there is no Pavement 3 layer, a zero depth should be used. | Numeric, non-negative |
0.025 m 0.083 ft |
| Pavement 4 Depth | Depth of Pavement 4. If there is no Pavement 4 layer, a zero depth should be used. | Numeric, non-negative |
0.025 m 0.083 ft |
| Pavement 5 Depth | Depth of Pavement 5. If there is no Pavement 5 layer, a zero depth should be used. | Numeric, non-negative |
0.025 m 0.083 ft |
| Pavement 6 Depth | Depth of Pavement 6. If there is no Pavement 6 layer, a zero depth should be used. | non-negative, positive |
0.025 m 0.083 ft |
| Pavement 7 Depth | Depth of Pavement 7. If there is no Pavement 7 layer, a zero depth should be used. | Numeric, non-negative |
0.025 m 0.083 ft |
| Pavement 8 Depth | Depth of Pavement 8. If there is no Pavement 8 layer, a zero depth should be used. | Numeric, non-negative |
0.025 m 0.083 ft |
| Pavement 9 Depth | Depth of Pavement 9. If there is no Pavement 9 layer, a zero depth should be used. | Numeric, non-negative |
0.025 m 0.083 ft |
| Pavement 10 Depth | Depth of Pavement 10. If there is no Pavement 10 layer, a zero depth should be used. | Numeric, non-negative |
0.025 m 0.083 ft |
| Paved Shoulder Width | Width of the Shoulder that is paved. | Numeric, positive |
1.0 m 3 ft |
| Paved Shoulder Slope Specification | Specifies how the paved shoulder slope will be calculated. User also has the option to set a parameter reference and use the Pavement Slope of an adjacent lane to define the top slopes of the shoulder. The behavior of the top of shoulder slope when this option is selected is described in the Behavior section. | List of options: a) Default, b) Use Inside Shoulder SE, c) Use Outside Shoulder SE | Default |
| Default Paved Shoulder Slope | Default cross slope of the paved shoulder surface | Slope | -4.0% |
| Earthened Shoulder Width | Width of the Shoulder that is unpaved | Numeric, positive | |
| Earthened Shoulder Slope Specification | Specifies how the unpaved shoulder slope will be calculated. User also has the option to set a parameter reference and use the Pavement Slope of an adjacent lane to define the top slopes of the shoulder. The behavior of the top of shoulder slope when this option is selected is described in the Behavior section. | List of options: a) Default, b) Use Inside Shoulder SE, c) Use Outside Shoulder SE | Default |
| Default Earthened Shoulder Slope | Default cross slope of the unpaved shoulder surface. | Slope | -4.0% |
| Daylight Width | Specifies the shoulder daylight width | Numeric, positive |
1.0 m 3 ft |
| Daylight Slope | Slope of the Foreslope of the shoulder, which extends from the Shoulder Hinge Point to the Subgrade Shoulder Point | Slope | 2: 1 |
| Subbase Daylight Type | Select whether to hold the daylight link to a fixed slope with variable width, or hold it to a fixed width with variable slope | Selection list: a) Hold Slope, Adjust Width, b) Hold Width, Adjust Slope | Hold Slope, Adjust Width |
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 |
|---|---|---|
| Paved Shoulder Width | Alignment that defines the edge of the paved portion of the shoulder. The following object types can be used as targets for specifying this: alignments, polylines, feature lines, or survey figures. | Optional |
| Earthened Shoulder Width | Alignment that defines the shoulder hinge point. The following object types can be used as targets for specifying this: alignments, polylines, feature lines, or survey figures. | Optional |
| Daylight Width | Alignment that defines the location of the subgrade shoulder point. | Optional |
| Daylight Slope | Profile that defines the elevation of the shoulder subgrade point. The following object types can be used as targets for specifying this elevation: profiles, 3D polylines, feature lines, or survey figures. | Optional |
Output Parameters
| Parameter | Description | Type |
|---|---|---|
|
Superelevation Axis of Rotation |
Indicates whether the subassembly supports the axis of rotation calculation. To view a description of the parameter, in the Properties window, hover the cursor over the parameter. For more information, see Profile Grade Line Adjustments During Superelevation. |
Static (Description) |
| Daylight Slope | Slope of the daylight link | Numeric |
| Daylight Offset | Offset of the subgrade daylight point | Numeric |
| Daylight Elevation | Elevation of the subgrade daylight point | Numeric |
Behavior
The shoulder is inserted using width and depth parameters provided. The slope of the subgrade surface can also be set using a parameter reference that sets the slope equal to that of the subgrade surface of an adjacent lane. You can also enter a fixed slope, if desired. The slopes of all base surfaces will follow the slope of the subgrade surface. When an alignment is used to define the Width to Subgrade Shoulder Point, the Foreslope of the Shoulder parameter is ignored. The shoulder subassembly ties in to the pavement layers (even if the outside edges of the pavement layers are extended).
Layout Mode Operation
In layout mode, this subassembly displays the links defined by the input parameters.
Point, Link, and Shape Codes
The following table lists the point, link, and shape codes for this subassembly that have codes assigned to them. Point, link, or shape codes for this subassembly that do not have codes assigned are not included in this table.
| Point, Link, or Shape | Codes | Description |
|---|---|---|
| P1 | ETW | Edge-of-traveledway on top surface |
| P2 | EPS | Edge of Paved Shoulder |
| P3 through P27 | No codes are assigned to these points. |
Coding Diagram
