UrbanKerbChannelValley1

Attachment

The attachment point is at the flange point of the channel or the back of the kerb.

Input Parameters

Note: Subbase dimensions are in meters or feet. Kerb-and-channel 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 kerb and channel as either Channel Edge or Back of Kerb	Boolean	Channel Edge
Channel Slope Method	Specifies method of channel slope input	Selection list	Outside Lane Slope
Channel Slope	Specifies fixed channel slope	Numeric	- 2%
Channel Slope Direction	Specifies whether the channel 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	0.450 m 1.5 ft
Subbase Extension	Distance the subbase is extended beyond the back-of-kerb. Use zero to terminate the subbase at the back-of-kerb	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	% slope of the subbase layer. Not used if Use SE is set to True.	Numeric	-2 (%)
Dimension A	Depth of the channel at the flange point	Numeric, positive, non-zero	175 mm 7 in
Dimension B	Width from the channel flange point to the channel invert level	Numeric, positive, non-zero	375 mm 15 in
Dimension C	Depth from the channel flange point to the channel invert level	Numeric, positive, non-zero	25 mm 1 in
Dimension D	Height from the channel invert level to the top-of-kerb	Numeric, positive, non-zero	75 mm 3 in
Dimension E	Width from the channel invert level to the top-of-kerb	Numeric, positive, non-zero	250 mm 9 in
Dimension F	Height of the back-of-kerb	Numeric, positive, non-zero	250 mm 9 in

Behavior

The kerb and channel links are inserted based on the Input Parameter dimensions 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 kerb, and continues for the Subbase Extension width. The subbase layer closes to the bottom-back-of-kerb, as shown in the diagram.

The subassembly builds the shape for a simple kerb and channel, with the attachment point either at (a) inside edge of the channel (or lip), or (b) the back of the kerb. The face of the kerb 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.

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 Gradient 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 Gradient Line Adjustments During Superelevation.

Static (Description)

Superelevation Axis of Rotation Support

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

Layout Mode Operation

In layout mode, this subassembly displays the kerb-and-channel component based on the input parameters given. If the Use SE parameter is set to true, the subbase layer is inserted at a slope of -2%.

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 channel
P2	InvertLevel_Channel	Channel invert level point
P3	TopKerb BackKerb	Top-of-kerb
L1, L2	Top, Kerb	Finish surface on the kerb and channel
L6	SubBase Datum
S1	Kerb	Kerb-and-channel concrete area
S2	SubBase