SlopeDitch

The SlopeDitch subassembly creates a ditch with backslope and foreslopes. In cut, it daylights to the existing ground. In fill, a berm is created and then daylights.

Case Cut:

Case Fill:

Attachment

The attachment point is the innermost point on the grading links preceding the ditch.

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 Right
Depth Depth of the ditch measured from the ditch out to the hinge point out. Numeric

3 ft

1 m

Width Width of the bottom of the ditch. Numeric, positive

2 ft

0.6 m

Foreslope Slope of the front-of-ditch link (x : 1). This link is always inserted downwards. Numeric, positive 2 (: 1)
Backslope Slope of the back-of-ditch link (x : 1). This link is always inserted upwards. Numeric, positive 2 (: 1)
Berm Width Width of the berm after the backslope. Numeric, positive

2 ft

0.6 m

Daylight Cut Slope The slope for normal daylighting in cut conditions. Numeric, positive 3 (: 1)
Daylight Fill Slope The slope for normal daylighting in fill conditions. Numeric, positive 4 (: 1)

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

Daylight Surface Name of the daylighting surface. The following object types can be used as targets for specifying the surface: surfaces. Optional
Foreslope Elevation May be used to override the foreslope slopes and widths. The following object types can be used as targets for specifying this elevation: profiles, 3D polylines, feature lines, or survey figures. Optional
Foreslope Width May be used to override the foreslope width. The following object types can be used as targets for specifying this: alignments, polylines, feature lines, or survey figures. Optional

Runtime Logical Assignments

None.

Output Parameters

None.

Behavior

The ditch foreslope, bottom, and backslope of the ditch are created. The subassembly is then determined to be in cut or fill at the top of the backslope. If in fill, a berm is created and then daylights. If in cut, the daylight link is created using the daylight slope.

Layout Mode Operation

In layout mode the subassembly displays the links comprising the ditch and berm in fill.

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 Hinge, Top
P2 Ditch_In, Top
P3 Ditch_Out, Top
P4 Hinge, Top
P5 Daylight, Top
P6 Berm_Out, Top
P7 Daylight, Top
L1 Top, Datum, Ditch, Foreslope
L2 Top, Datum, Ditch
L3 Top, Datum, Ditch, Backslope
L4 Top, Datum, Ditch, Daylight
L5 Top, Datum, Ditch
L6 Top, Datum, Ditch, Daylight

Coding Diagram

Case Cut:

Case Fill: