This subassembly inserts a shoulder for widening situations that will trim the base and subbase layers based on the location of the existing ground surface.
Attachment
The attachment point is at the inside edge of the shoulder on the finish grade surface.
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 to insert the subassembly either on the right or the left side of the attachment point. |
Left / Right | Right |
| Shoulder Width | Width from the attachment point to the shoulder hinge point | Numeric |
1.8 m 5.40 ft |
| Use Superelevation Slope |
Specifies to use superelevation slope, from the superelevation specification defined on the baseline alignment, for the paved portion of the shoulder. |
Selection List:
|
No |
| Shoulder Slope Direction |
Specifies whether the shoulder slopes away from the crown or towards the crown |
Selection List:
|
Away from Crown |
| Default Shoulder Slope | Default cross slope of the shape surface. This value is used if superelevation slope is not used, or is not specified for the baseline alignment. | Numeric | - 2.0 % |
| 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 |
| Daylight Slope | The value of the fixed slope of the daylight link, used if the “hold slope” option is used | Numeric, positive | 4 ( : 1) |
| Daylight Width | The value of the fixed width of the daylight link, used if the “hold width” option is used | Numeric, positive |
5.40 ft 1.8 m |
| Pave 1 Depth | Depth of Pave 1 (zero to omit) | Numeric, non-negative |
0.025 m 0.083 ft |
| Pave 2 Depth | Depth of Pave 2 (zero to omit) | Numeric, non-negative |
0.025 m 0.083 ft |
| Base Depth | Depth of base layer (zero to omit) | Numeric, non-negative |
0.100 m 0.333 ft |
| Subbase Depth | Depth of Subbase Layer (zero to omit) | Numeric, non-negative |
0.300 m 1.0 ft |
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 |
|---|---|---|
| Shoulder Width | May be used to override the fixed Shoulder Width and tie the edge-of-shoulder to an offset alignment. The following object types can be used as targets for specifying this: alignments, polylines, feature lines, or survey figures. | Optional |
| Existing Surface | May be used to specify an existing surface to trim base and subbase layers to. The following object types can be used as targets for specifying this surface: surfaces. | Optional |
Output Parameters
| Parameter | Description | Type |
|---|---|---|
| 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 |
|
Shoulder Width |
Width of the paved shoulder |
Numeric |
| Shoulder Slope |
Slope of the paved shoulder |
Numeric |
Behavior
When inserted, this subassembly checks for the presence of the target existing ground surface. If this surface exists, then the base and subbase surfaces will be trimmed to the existing ground.
If the surface does not exist, then this shoulder behaves the same as the ShoulderExtendAll subassembly.
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 | Code | Description |
|---|---|---|
| P2 | EPS | Edge of paved shoulder, finish grade |
| P4 | EPS_Pave1 | Edge of paved shoulder on Pave1 |
| P6 | EPS_Pave2 | Edge of paved shoulder on Pave2 |
| P8 | EPS_Base | Edge of paved shoulder on Base |
| P10 | Daylight_Sub | Subbase daylight point |
| L1 | Top, Pave | Paved finish grade |
| L3 | Pave | Paved finish grade |
| L4 | Pave1 | Top of Pavement2 |
| L6 | Pave1 | Top of Pavement2 |
| L7 | Pave2 | Top of Pavement3 |
| L9 | Pave2 | Top of Pavement3 |
| L10 | Base | Top of the base course |
| L12 | Base | Top of the base course |
| L13 | SubBase, Datum | Bottom of subbase, datum |
| L14 | Top | Top surface formation |
| S1 | Pave1 | |
| S2 | Pave2 | |
| S3 | Base | |
| S4 | SubBase |
Coding Diagram
