UrbanCurbGutterGeneral
 
 
 

This subassembly inserts links for a standard shape concrete curb-and-gutter with subbase.

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

Specifes 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

0.450 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

1.0 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

(mm/in)

Depth of the gutter at the flange point

Numeric, positive,

non-zero

175 mm

7 in

Dimension B

(mm/in)

Width from the flange point to the gutter flowline

 

400 mm

16 in

Dimension C

(mm/in)

Depth from the flange point to the gutter flowline

Numeric, positive,

non-zero

25 mm

1 in

Dimension D

(mm/in)

Height of curb from the gutter flowline to the top-of-curb

Numeric, positive,

non-zero

150 mm

6 in

Dimension E

(mm/in)

Width from the gutter flowline to the back-of-curb

Numeric, positive,

non-zero

200 mm

8 in

Dimension F

(mm/in)

Width of the top-of-curb

Numeric, positive,

non-zero

150 mm

6 in

Dimension G

(mm/in)

Height of the back-of-curb

Numeric, positive,

non-zero

325 mm

13 in

Behavior

The curb and gutter 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 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 in the AutoCAD Civil 3D User’s Guide Help.

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 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.

Layout Mode Operation

In layout mode, this subassembly displays the curb-and-gutter 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 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

L7

Subbase

Datum

 

S1

Curb

Curb-and-gutter concrete area

S2

Subbase

 

Coding Diagram