Auto Kerb Returns

Auto Kerb Returns

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Introduction

This command undertakes the following tasks automatically:

Scans the drawing for all intersection Main and Side Roads (defined from alignments with prefix r- in the description and created by Civil Site Design using the Create/Edit Roads or Auto Create Roads commands)

Locates the edge of each road (by reading the Label from the road cross sections assigned as the connection point in the Active Drawing Settings form)

Creates alignments of a specified radius to match to the edge of the Main and Side Roads and maintain tangency relative to the Road centerline alignment, using Civil 3D styles set by the designer

Automatically generates a Kerb Return road object. The Design profile matches the incoming and outgoing levels and grades and includes parabolic vertical curve/s through the kerb return to form a smooth profile.

The designer can control the default radius assigned to the kerbs at the time of running the command and also from the Active Drawing Settings.

This command assumes that the Roads have been created (not necessarily the final designed profile).

Once the kerb returns have been created users can:

Edit the profile of the kerb returns by changing the profile of the Main and/or Side roads via the Create/Edit Roads command

Change the automatic redesign options for the kerb return/s by editing the Kerb Design Controls

Change the radius of any kerb return using the Create/Edit Kerb Return command

Details

After starting this command the Designer may need to (if not already defined in the Active Drawing Settings - Styles tab):

Select the required Civil 3D style for the kerb alignments

Select the required Civil 3D labels style for the kerb alignments

Upon selecting Auto Kerb Returns the following form is displayed:

Enter Default Radius Type in the required default radius to be applied to all kerb returns that have not already been created.

OK Apply value as the default radius.

Cancel Exit command without creating kerb returns. .

Note: Before running this command, designers can create single radius or 3 centered radius kerb returns at selected intersection locations using the Create/Edit Kerb Return command. This command also enables the user to create a kerb return from a manually created alignment (the alignment must be created with description prefix k-)

The command is fully automated - the software includes it's own algorithm for locating the connection points on the main and side road corridors at the edge of each road, using the road centerline for directions start and end.

Note: Given the iterative nature of the command, designers should provide Road lengths in any direction from the intersection point to be AT LEAST three times the radius of the kerb return to provide the software with a reasonable starting point to iterate from.

After Running the Command:

Alignments are created to connect the edge of the Main and Side Roads at every quadrant.
All kerb return alignments created with this command will have the same radius.

This occurs for ALL intersecting Roads in the drawing (where those Roads have been created from alignments prefixed with r- in the Description).

In the example shown the thick red lines represent the Civil 3D alignments created by the software.

Use the Create/Edit Kerb Return command to change the radius or kerb alignment design if required. The software will NOT recognize manual edits to the kerb return alignment.

For more information regarding the kerb return controls please review the Create/Edit Kerb Return command.


Enter Default Radius	Type in the required default radius to be applied to all kerb returns that have not already been created.
OK	Apply value as the default radius.
Cancel	Exit command without creating kerb returns. .