The Driveway subassembly inserts links to create a driveway with a detached sidewalk. The driveway and curb and gutter is based on APWA Standard Plans for Public Works Construction, 2012 edition.
You should verify that the dimensions used match your interpretation of the standard plan.
Full Curb:
Min Curb:
Plan:
Attachment
The attachment point is at the lip, back of curb, or flowline/surface on the curb and gutter.
Input Parameters
|
Parameter |
Description |
Type |
Default |
|---|---|---|---|
| Side | Specifies which side to place the subassembly | Left / Right | Right |
| Curb Type | Specifies the curb to be used | A1-6 / A1-8 / A2-6 / A2-8 / A3-6 / A3-8 / B1-6 / B2-6 / B3-6 | A2-6 |
| Attach Point | Specifies where the curb attach point is | Lip / BackCurb / Flowline/Surface | Lip |
| Base Depth | Depth to subbase at the flange point. Use zero if there is no subbase. | Numeric, positive |
0.5 ft 0.15 m |
| Curb Face at Low | Height of curb face at the lowest point of the driveway | Numeric, positive |
0.083 ft 0.025 m |
| Driveway Type | Type of driveway | Type A / Type B | Type B |
| Driveway Thickness | Thickness of driveway | Numeric, positive |
0.5 ft 0.15 m |
| Sidewalk Thickness | Thickness of sidewalk | Numeric, positive |
0.5 ft 0.15 m |
| Sidewalk Width | Width of sidewalk | Numeric, positive |
4 ft 1.2 m |
| Sidewalk Grade | Grade of sidewalk | Numeric | 2% |
| Y Value | Wing distance measured along the curb | Numeric, positive |
4 ft 1.2 m |
| X Value | Width of driveway ramp | Numeric, positive |
3 ft 1 m |
Target Parameters
This section lists the parameters in this subassembly that can be mapped to one or more target objects. For more information, see To Specify Corridor Targets.
|
Parameter |
Description |
Status |
|---|---|---|
| Top of Curb | Used to determine the driveway state to build the driveway. The following object types can be used as targets for specifying the elevation: profiles, 3D polylines, feature lines, or survey figures. | Required |
Runtime Logical Assignments
The curb and gutter, and driveway dimensions.
Output Parameters
None.
Behavior
The initial point is set at the attachment point. The curb and gutter shape is then built. The top of curb is adjusted based on the top of curb profile.
The type of driveway is determined by the user parameters. The top of curb elevation target cannot make the top of curb higher than the curb height, nor lower than the curb face at the low location. A higher top of curb elevation results in the maximum curb height. A lower top of curb elevation results in an elevation above the flowline/surface plus the curb face at low input parameter.
For Type A:
The driveway is integral with the sidewalk for its entire length. The slope of the driveway is based on the full curb height and the sidewalk grade for a distance of the X value.
For Type B:
The driveway is not integral with the sidewalk for its entire length. For a distance Y, measured along the curb, the driveway has a triangular wing shape. The distance for the driveway is based on the proportional curb height and the X and Y input parameters.
Sidewalk:
The sidewalk location is built from the input parameters assuming a full curb height along the driveway length.
Layout Mode Operation
In layout mode, this subassembly draws the full height curb and sidewalk.
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 |
|---|---|---|
| P1 | BackCurb | Back of curb |
| P2 | TopCurb | Top of curb |
| P3 | FinishSurface | Finish surface or flowline |
| P4 | Flange | Gutter flange |
| P10 | Driveway_Outside Sidewalk_Inside | Outside of driveway inside of sidewalk |
| P11 | Sidewalk_Outside | Outside of sidewalk |
| L1-L3, L6 | Top, Curb | Top of curb |
| L4 | Driveway, Top | Top of driveway |
| L5 | Sidewalk, Top | Top of sidewalk |
| L8 | CurbBottom, Datum | Bottom of curb |
| L9, L15, L21 | SubBase, Datum | Bottom of subbase |
| L14 | Driveway_Sub | Bottom of driveway concrete |
| L17 | Sidewalk_Sub | Bottom of sidewalk |
| S1 | Curb | Concrete curb area |
| S2, S4, S6 | SubBase | Subbase |
| S3 | Driveway | Concrete driveway area |
| S5 | Sidewalk | Concrete sidewalk area |
Coding Diagram
