UrbanCurbGutterValley3

This subassembly inserts links for a slope-bottomed valley curb and gutter with subbase.

The bottom surface of the curve flattens to a horizontal link at the gutter flowline. User-defined input parameters control the dimensions of the shape.

Attachment

The attachment point is at the flange point of the gutter or the back of the curb.

Input Parameters

Note: Subbase dimensions are in meters or feet. Curb-and-gutter dimensions must be given in millimeters or inches.

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
Insertion Point	Specifies insertion point of the curb and gutter as either Gutter Edge or Back of Curb	Boolean	Gutter Edge
Gutter Slope Method	Specifies method of gutter slope input	Selection list	Outside Lane Slope
Gutter Slope	Specifies fixed gutter slope	Numeric	- 2%
Gutter Slope Direction	Specifies whether the gutter slopes towards the crown or away from the crown	Selection list	Away from Crown
Subbase Depth	Depth to subbase at the flange point. Use zero if there is no subbase.	Numeric, positive	1.0 m 1.5 ft
Subbase Extension	Distance the subbase is extended beyond the back-of-curb. Use zero to terminate the subbase at the back-of-curb.	Numeric, positive	0.3 m 1 ft
Subbase Slope Method	Selects whether to use the Outside Lane superelevation slope for the subbase layer, or to set a numeric % slope value	Selection list	Outside Lane Slope
Subbase Slope	Cross slope of the subbase layer. Not used if Use SE is set to True.	Numeric	- 2 (%)
Dimension A	Depth of the gutter at the flange point	Numeric, positive, non-zero	150 mm 6 in
Dimension B	Width from the gutter flange point to the gutter flowline	Numeric, positive, non-zero	600 mm 24 in
Dimension C	Depth from the gutter flange point to the gutter flowline, and from the gutter flowline to the top-of-curb	Numeric, positive, non-zero	50 mm 2 in
Dimension D	Width from the gutter flowline to the top-of-curb	Numeric, positive, non-zero	40 mm 1.5 in
Dimension E	Width from the top-of-curb to back-of-curb	Numeric, positive, non-zero	150 mm 6 in
Dimension F	Height of the back-of-curb	Numeric, positive, non-zero	300 mm 12 in

Behavior

The curb and gutter links are inserted based on the Input Parameter values for Dimension A – Dimension F. All dimensions must be positive, non-zero values. If a non-zero subbase depth is given, the subbase layer is inserted to the back of curb, and continues for the Subbase Extension width. The subbase layer closes to the bottom-back-of-curb, as shown in the diagram.

The subassembly builds the shape for a simple curb and gutter, with the attachment point either at (a) inside edge of the gutter (or lip), or (b) the back of the curb. The face of the curb is given a small, constant width to make it non-vertical.

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.

Target Parameters: None.

Layout Mode Operation

In layout mode, this subassembly displays the curb-and-gutter component based on the input parameters given. If a numeric value is given for the Subbase %Slope, the subbase layer is inserted at the given slope value. Otherwise the default value of -2% is used.

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)

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)

Superelevation Axis of Rotation Support

If the Gutter Slope Direction is set to Away from Crown, then the gutter slope is the opposite of the superelevation slope. If Gutter Slope Direction is set to Towards Crown, the gutter slope is reversed.

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	Code	Description
P1	Flange	Flange point of the gutter
P2	Flowline_Gutter	Gutter flowline point
P3	TopCurb	Top-of-curb
P4	BackCurb	Back-of-curb
L1 – L3	Top, Curb	Finish grade on the curb and gutter
L8	SubBase Datum
S1	Curb	Curb-and-gutter concrete area
S2	SubBase