Module 16 - West Virginia Universityddean/CE210/AutoCAD Civil 3D 2009... · Module 16 - Roadway ......

NOTES

Module 16

Roadway Assemblies and Corridors

In this module, you learn how to work with roadway assemblies and corridors

in AutoCAD Civil 3D.

Objectives

After completing this module, you will be able to:

Navigate the Subassembly Catalog.

Add subassemblies to a tool palette and modify subassembly properties.

Create an assembly and modify the assembly properties.

Create a corridor.

Modify the corridor properties.

Create a corridor surface.

Prepare a 3D model of the finished road design.

AutoCAD Civil 3D 2009 Education Curriculum NOTES

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Notes to Instructor

Data for this module resides in the \AutoCAD Civil 3D 2009 Education

Curriculum\Module 16 - Roadway Assemblies and Corridors\ folder.

Exercises

The following exercises are provided in step-by-step format. Open the

AutoCAD Civil 3D program prior to beginning the lesson by double-clicking

the Civil 3D icon on the desktop.

Those working in the imperial system should use the drawing files beginning

with the letter I, while those working in the metric system should use the

drawing files beginning with the letter M. A drawing is provided for each

exercise in the lesson.

You must open the drawing provided with each exercise.

The exercises in this module are as follows:

1. Navigate the Subassembly Catalog

2. Add Subassemblies to Tool Palette and Modify Subassembly Properties

3. Create an Assembly and Modify Assembly Properties

4. Create a Corridor

5. Modify the Corridor Properties

6. Create a Corridor Surface

7. Prepare 3D Model of Finished Road Design

Module 16 - Roadway Assemblies and Corridors NOTES

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Roadway Assemblies and Corridors

This module introduces AutoCAD Civil 3D assembly and corridor

functionality that can be applied to road and highway engineering projects.

A road or highway transportation design is based on a typical section, which

governs the overall configuration of the cross section. The typical section

dictates the following:

Elements represented in the cross section: lanes, shoulders, curbs,

sidewalks, barriers, guardrails, slopes, and so on.

Geometric configuration of the elements: widths, grades, slopes, depths,

and materials.

AutoCAD Civil 3D uses assembly objects to represent a typical cross

section. An assembly that incorporates lanes, shoulders, guardrails, and

match (catch) slope subassembly objects is as shown.

Assemblies are created from subassembly objects. Subassemblies are used

to represent the cross section elements. The Civil 3D assembly object

shown is used to create a corridor model and consists of lane, shoulder,

guardrail, and match slope subassemblies.

AutoCAD Civil 3D comes with many stock subassemblies that can be used

for a number of different typical section elements.

Subassemblies are organized in categories in the Subassembly Catalog.


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You organize the subassemblies that you regularly use on AutoCAD tool

palettes. You can copy subassemblies from the Subassembly Catalog to

your tool palettes.

Subassemblies use input parameters that enable you to modify the properties

of the subassemblies prior to use. Using input parameters, you can control

the geometric properties of the subassemblies and specify widths, slopes,

and depths. You modify the default input parameters of the subassemblies

on the tool palette.


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To build a typical section, you first insert an assembly object to the drawing

and assign a name.

Once the assembly object has been created, you then attach the

subassemblies from the tool palette. The following illustration shows an

assembly with two subassemblies to represent the right and left lanes.

Subassembly objects contain points, links, and shapes. Points represent the

singular locations and are used to create corridor feature lines. Points can

also be used for annotating design cross sections and creating construction

staking data. Links connect the points and are used to create corridor

surfaces and annotate grades on design cross sections. Shapes connect the

links and are used to calculate pavement structure volumes and annotate

pavement structure end areas.

After the assembly has been created, you then create the corridor object. A

corridor is used to represent the final road design and is constructed using an


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alignment, a profile, and an assembly. You can also use other alignments

and profiles to control the construction of a corridor. For example, an

alignment representing a proposed edge of pavement (EOP) can be used to

control the lane width.

Once the corridor has been created, you can view the corridor in 3D using

the AutoCAD Object Viewer.

You can also view and edit the corridor sections for each station along the

corridor.

For each station, you can modify the subassembly input parameters. You

can also change the values for a range of stations.


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After you have created the corridor, you can modify the corridor properties

to perform the following tasks:

Add, remove, and change corridor regions. Regions are longitudinal

segments along a corridor, delineated with a start and end station. A

different assembly can be assigned to each region.

Change the assembly insertion frequency, or the interval along the

alignment at which an assembly is inserted to create the corridor.

Define target mapping for specific subassemblies. For example, the

match slope (daylighting) subassemblies need to know which surface to

project the slopes to. This is called target mapping.


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You can also create corridor surfaces when you modify the corridor

properties.

Corridor surfaces can be created from links or feature lines. Corridor

surfaces are most often created from the datum and top links. All

subassemblies have datum and top links.

The datum links are located on the bottom of the assembly and are used to

create a corridor datum surface. A corridor datum surface is used for

calculating earthwork cut and fill volumes.

The top links are located on the top of the assembly and are used to create a

corridor top surface. A corridor top surface can be used to:

Create 3D models of proposed roads.

Label design spot elevations and grades.

Calculate manhole rim and pipe invert elevations for pipe networks.

Civil 3D surface styles are used to control the display of the corridor

surfaces. Corridor surface boundaries are defined from the corridor feature

lines, which are the longitudinal lines that run along the length of the


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corridor. Examples of corridor feature lines include edge of traveled way

(ETW), edge of paved shoulder (EPS), and daylight.

Note: ETW and EPS are Civil 3D codes for edge of pavement (EOP) and

edge of shoulder (EOS).

Daylight feature lines are most often used as boundaries for corridor datum

and top surfaces.

You can create 3D models of corridors by combining surfaces together. For

example, you combine the existing ground surface and the corridor top

surface to create a surface that consists of both existing and proposed surface

data. You use the surface Paste command to combine data from two

surfaces.

You can also assign render materials to the corridor to quickly create

photorealistic renderings of your model.


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Key Terms

Assembly The Civil 3D object used to represent the typical cross section. The

assembly is created by adding subassemblies.

Assembly

Insertion

Frequency

The frequency along an alignment at which assemblies are inserted to create

the corridor.

Codes Subassemblies consist of unique codes. Codes are used to identify the

names of the points, links, and shapes that make up a subassembly.

Code Set Style A library of codes and the marker styles, link styles, shape style, and render

materials assigned to codes.

Corridor The Civil 3D object used to represent the road design.

Corridor

Region

A segment along a corridor defined with a start station and an end station.

You can use multiple corridor regions. For each corridor region you can

assign a different assembly, assembly insertion frequency, and target

mapping parameters.

Corridor

Surface

A Civil 3D surface that is created from a corridor model to represent a

specific layer of the cross section. Common corridor surfaces include top

and datum surfaces.

Daylighting The projection of a match slope to a surface. AutoCAD Civil 3D uses a

number of subassemblies that can be used for daylighting.

Feature Lines Used to represent the longitudinal lines along a corridor. Feature lines are

created by connecting the subassembly points found in the assembly used to

create the corridor.

Feature Line

Style

Used to control the display of corridor feature lines.

Paste The surface editing action of combining data from two surfaces.

Subassembly

Catalog

A library of stock subassemblies that come with AutoCAD Civil 3D.


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Subassembly

Link

Links connect the subassembly points. Subassembly links are used to create

corridor surfaces and can also be used to annotate slopes and grades on

design cross sections. You can also assign render materials to subassembly

links to quickly create photorealistic renderings of the corridor design.

Subassembly

Point

The singular locations on a subassembly. Examples of subassembly points

include edge of traveled way (ETW) and edge of paved shoulder (EPS).

These are connected to create corridor feature lines when the corridor is

created. They can also be used to create construction staking points and to

label offsets and elevations on design cross sections.

Subassembly

Shape

Closed shapes used to represent the structure materials in the subassemblies.

Materials include pavement, granular, and concrete. Subassembly shapes

are used to calculate material volumes and can be used to annotate end areas

on design cross sections.

Subassembly

Input

Parameters

All subassemblies use editable input parameters that enable you to change

the geometric properties of the subassembly including width, slope, grade,

and depth.

Target

Mapping

Subassemblies use target mapping to control how they function.

Subassemblies used for daylighting use a required target to indicate which

surface to project the match slope to. Subassemblies for lanes use an

optional target alignment to control the width.

Typical

Section

The typical section represents the typical cross section configuration for a

road or highway design. The typical section is part of the design criteria and

indicates the cross section elements (lanes, shoulders, curbs, and so on) and

their geometric configuration.


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EXERCISE 1: NAVIGATE THE SUBASSEMBLY CATALOG

In this exercise, you learn about AutoCAD Civil 3D subassemblies and how to

navigate the Subassembly Catalog.

A typical section for a road or highway design is used to indicate the typical

cross section configuration details. These details include the elements that are

included in the cross section (lanes, shoulders, curbs, barriers, and so on) and

their design parameters. Examples of the design parameters include width,

slope, grade, and depth.

AutoCAD Civil 3D uses subassemblies to represent the different elements of a

typical cross section. Subassemblies are available for a number of cross

section elements including lanes, shoulders, curbs, barriers, guardrails,

sidewalks, and match slopes. Subassemblies are organized in categories in the

Subassembly Catalog.

All subassemblies have an associated Help file that offers instruction on how

to use the subassembly.

Civil 3D assemblies represent the typical section and are constructed from

subassemblies.

For this exercise, open …\Module 16 – Roadway Assemblies and

Corridors\I_RoadwayAssembliesandCorridors-EX1.dwg

(M_RoadwayAssembliesandCorridors-EX1.dwg).

1. Click Corridors menu > Subassembly Catalog.

Civil 3D displays the Autodesk Content Browser.


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2. Click Corridor Modeling Catalogs Imperial (Corridor Modeling Catalogs

Metric).

3. Click C3D Imperial Transportation Design Subassembly Catalog (Civil 3D

Metric Transportation Design Subassembly Catalog).

Notice that the Civil 3D subassemblies are organized into other catalogs

for lanes, medians, shoulders, and so on.

4. Click Lanes.

Civil 3D displays a number of subassemblies for different lane


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configurations.

5. Right-click LaneOutsideSuper and click Help.

6. Review the contents of the Help document for the LaneOutsideSuper

subassembly.

Every subassembly has its own Help document.

This Help document describes how the LaneOutsideSuper subassembly is

used. The Help documentation for all subassemblies consists of the following

categories:

Attachment

Subassemblies are combined to create the assembly or typical section for the

road design. The attachment describes the attachment point for the

subassemblies.

You can attach a subassembly directly to the assembly object or to another

subassembly.

Input Parameters

Every subassembly has a number of variable input parameters. You can

configure each subassembly to satisfy the requirements of the typical cross

section.

Target Parameters

Some subassemblies use Target parameters to override the input parameters.

For example, the Width input parameter for the LaneOutsideSuper

subassembly can be overridden by assigning an optional Alignment Target

parameter.

This means that you can vary the lane width by linking the outer edge of the

subassembly to an edge of pavement alignment. With the LaneOutsideSuper

subassembly, you can also vary the cross slope with a Profile Target parameter


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and control the elevation of the outer edge of the subassembly.

Output Parameters

Some subassemblies have output parameters, which can be used as input

parameters to other subassemblies.

Behavior

The Behavior section describes how the subassembly works.

Point, Link, and Shape Codes

Every subassembly consists of points, links, and shapes with unique identities.

The coding diagram and code list are used to identify and describe the point,

link, and shape codes on the subassembly.

A corridor model is created by connecting similar points along the length of

the alignment. Points can also be used to annotate offsets and elevations on

design sections. Links can be used to create corridor surfaces and are also

used to annotate slopes and grades on design sections. Shapes are used to

calculate pavement structure (granular, asphalt, concrete, and so on) quantities,

and can be used to annotate end areas.

7. Peruse the Subassembly Catalog and review the Help documents for some

of the other subassemblies.

8. Close the Help document for the LaneOutsideSuper subassembly.

9. Close the Subassembly Catalog.

10. Close the drawing and do not save the changes.


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EXERCISE 2: ADD SUBASSEMBLIES TO TOOL PALETTE AND MODIFY SUBASSEMBLY

PROPERTIES

You can copy subassemblies from the Subassembly Catalog to tool palettes.

You organize the tool palettes so they contain the subassemblies that you

regularly use.

Tool palettes are organized in palette groups. You can create your own and

select subassemblies from a number of different palette groups.

Once subassemblies have been copied to a tool palette, you can modify the

default input parameters for the subassemblies.

You can also rename the subassemblies on the tool palette.


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In this exercise you:

Create a new tool palette.

Copy the subassemblies from the Subassembly Catalog to

the tool palette.

Modify the subassembly parameters on the tool palette.

Rename the subassemblies.

For this exercise, open …\Module 16 – Roadway Assemblies and

Corridors\I_RoadwayAssembliesandCorridors-EX2.dwg


Create a New Tool Palette

Begin by opening and configuring the Tool Palettes window.

1. Close the Toolspace window and all other workspace windows.

2. Press CTRL+3 on the keyboard to open the Tool Palettes window.

3. Position the Tool Palettes window on the right side of the screen, undocked.


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4. Right-click the Tool Palettes window. Click Customize Palettes.

5. On the right side of the Customize dialog box, scroll to the top of the list.

6. Right-click Civil 3D - Imperial (Civil 3D - Metric). Click Set Current.

You now create a new Tool Palette on the Tool Palettes window.

7. Click Close.

8. Right-click the Tool Palettes window. Click New Palette.

9. For the Tool Palette Name, enter Module 16 Roads. Press ENTER.


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Now open the Civil 3D Subassembly Catalog.

10. Click Corridors menu > Subassembly Catalog.

11. Adjust the size of the Autodesk Content Browser window and position it on

the screen so you can see both the Content Browser and the Tool Palettes

window.

Copy the Subassemblies from the Subassembly Catalog to the Tool Palette

You now copy the required subassemblies from the Subassembly Catalog to the

Tool Palettes window.

1. Click in the Autodesk Content Browser window.

2. Click Corridor Modeling Catalogs Imperial (Corridor Modeling Catalogs

Metric).


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3. Click C3D Imperial Transportation Design Subassembly Catalog (Civil 3D

Metric Transportation Design Subassembly Catalog).

4. Click Lanes.

5. For LaneOutsideSuper, hold the mouse over the blue i-drop icon.

6. Click and drag the LaneOutsideSuper subassembly to the Tool Palettes

window created earlier.

The LaneOutsideSuper subassembly is copied to the Tool Palettes window.


8. Click Back.

9. Click Shoulders.

10. Using the same procedure, copy the ShoulderExtendSubbase subassembly to

the Tool Palettes window.


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12. Click Back twice.

13. Click the C3D Imperial Getting Started Subassembly Catalog (C3D Metric

Getting Started Subassembly Catalog).

14. Using the same procedure, copy the BasicGuardrail, Basic Barrier, and

BasicSideSlopeCutDitch subassemblies to the Tool Palettes window.

The subassemblies you need are now on the tool palette. The next step is to

modify the subassembly parameters.

Modify Subassembly Properties

In these next few steps, you modify the default input parameters for the

LaneOutsideSuper, ShoulderExtendSubbase, and BasicSideSlopeCutDitch

subassemblies.

1. On the Tool Palettes window, right-click LaneOutsideSuper. Click

Properties.

2. In the Tool Properties dialog box, click to close BASIC.

Civil 3D displays the input parameters for the subassembly in the

ADVANCED area of the Tool Properties window.

3. For Width, enter 14 (3.75 m).


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4. Click OK.

5. On the Tool Palettes window, right-click ShoulderExtendSubbase. Click

Properties.


7. For Shoulder Width, enter 6 (2 m).

8. For Daylight Slope, enter 3.

9. Click OK.

10. On the Tool Palettes window, right-click BasicSideSlopeCutDitch. Click

Properties.



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12. For Fill Slope, enter 2. Press ENTER.

13. Click OK.

Rename the Subassemblies

Now rename the subassemblies on the tool palette.

1. On the Tool Palettes window, right-click LaneOutsideSuper and click

Rename.

2. Change the name to Lane.

3. Repeat the process and rename the other subassemblies as follows:

Old Name New Name

ShoulderExtendSubbase Shoulder

BasicGuardrail Guardrail

BasicSideSlopeCutDitch Match Slope

BasicBarrier Barrier


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4. Close the Autodesk Content Browser window.



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EXERCISE 3 – CREATE AND ASSEMBLY AND MODIFY ASSEMBLY PROPERTIES

Assemblies are Civil 3D objects used to create the corridor model and represent

the typical cross section for a road or highway. You create an assembly and then

add the subassemblies to the assembly.

You use the Object Properties and Tool Palettes windows when you create an

assembly. A workspace is a customizable interface created to suit the current

task. A workspace can be created to represent an assembly construction

interface.

The assembly you create in this exercise consists of lanes, shoulders, guardrails,

and match slopes. When you create the assembly, the subassemblies are

organized into assembly groups. A new assembly group is created when you

pick the assembly to insert a subassembly.


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After you create the assembly, you rename the assembly groups to indicate either

the left or right side.

For this exercise, open …\Module 16 – Roadway Assemblies and Corridors\

RoadwayAssembliesandCorridors-EX3.dwg


Create Workspace

Begin by creating and configuring an AutoCAD workspace for assembly

creation. You create a new workspace for assembly creation that uses the Object

Properties and Tool Palettes windows.

1. On the Workspaces toolbar, click Workspace Settings.

2. Select Automatically Save Workspace Changes.


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3. Click OK.

4. Ensure the current workspace is set to Civil 3D Complete.

5. Click the drop-down arrow on the Workspaces toolbar. Select Save Current

As.

6. In the Save Workspace dialog box, for Name, enter Assembly Creation.

7. Click Save.

When you create the assembly, you use the Tool Palettes window and the

Object Properties window. In the next few steps, you position these

windows.

8. Close all dialog boxes and workspaces so the graphics area is clear.

9. Press CTRL + 1 on the keyboard to open the Object Properties window.

10. Position the Object Properties window on the left side of the screen,

undocked.

11. Press CTRL + 3 on the keyboard to open the Tool Palettes window.

12. Position the Tool Palettes window on the right side of the screen, undocked.


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You are now ready to create the assembly.

Create the Assembly

1. Click Corridors menu > Create Assembly.

2. In the Create Assembly dialog box, for Name, enter 2 Lane Rural.

3. Click OK.

4. Select a location anywhere in the drawing area to create the assembly.

Civil 3D creates the assembly object in the drawing. The subassemblies are

attached to the assembly object.


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You now attach the subassemblies to the assembly.

5. On the Tool Palettes window, click Lane.

Civil 3D populates the Object Properties window with input parameters for

the Lane subassembly.

6. Review the input parameters in the Object Properties window.

7. Ensure Side is set to Right.

8. Select the vertical line on the assembly to insert the right side lane.

9. On the Object Properties window, change Side to Left.

10. Select the vertical line on the assembly to insert the left side lane.

11. On the Tool Palettes window, click Shoulder.


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12. Review the input parameters in the Object Properties window.

13. Ensure Side is set to Right.

14. Zoom in and click the top outer right lane marker point to attach the right

shoulder subassembly.

15. On the Object Properties window, change Side to Left.

16. Zoom to and click the outer left lane marker point to attach the left shoulder

subassembly.

The assembly now contains the shoulders.

Note: You can use the Erase command to erase a subassembly if it was

inserted on the wrong side.

Now add the guardrails.

Note: Metric users, use the Barrier subassembly and not the Guardrail

subassembly.

17. On the Tool Palettes window, click Guardrail (Metric: Barrier).

18. On the Object Properties window, ensure Side is set to Right.

19. Select the top marker on the outside edge of the shoulder pavement


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structure.

20. Repeat the step and add the Guardrail subassembly (Metric: Barrier

subassembly) to the left side.

The guardrails (Metric: barriers) are now on both sides.

Now add the match slopes.

21. On the Tool Palettes window, click Match Slope.

22. On Object Properties, ensure the side is set to Right.

23. Zoom in and select the subassembly marker on right side of the right

shoulder.


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24. Repeat the step and add the Match Slope subassembly to the left side.

25. Press the ESC key when finished.

The construction of the 2 Lane Rural assembly is complete.

Modify Assembly Properties

You modify the properties of the assembly to rename assembly groups and the

subassemblies.

First, restore the Civil 3D Complete Workspace. This redisplays the Toolspace

window.

1. On the Workspaces toolbar, click the drop-down list and change the

workspace to Civil 3D Complete.

Now modify the assembly properties to rename the subassemblies for ease

of use.

2. In Toolspace, click the Prospector tab.

3. Expand the Assemblies tree.

4. Right-click 2 Lane Rural. Click Properties.

5. In the Assembly Properties dialog box, click the Construction tab.


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Subassemblies are organized into groups. A new group is created when you

select the assembly object to add the subassemblies.

6. Rename the subassembly groups to Right Side and Left Side as shown.

Tip: Right-click the item and click Rename, or click the Item and press the

F2 key on the keyboard.

Note: Metric users, rename the barriers to Barrier Left and Barrier Right.

7. Click OK.



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EXERCISE 4: CREATE A CORRIDOR AND VIEW/EDIT CORRIDOR SECTIONS

The corridor represents the final design of the road or highway. The assembly is

processed along the horizontal and vertical alignments at the assembly insertion

frequency.

When you create a corridor, you select an alignment, profile, and assembly.

The daylighting subassemblies used in an assembly need to know which surface to

project their slopes to. This is called target mapping. You assign surface targets to

the match slope subassemblies when you create the corridor.

After you create the corridor, you view the corridor in the Object Viewer.


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.

With the View/Edit Corridor Sections command, you can view and modify the cross-

section data at each station location.


I_RoadwayAssembliesandCorridors-EX4.dwg


1. Click Corridor menu > Create Simple Corridor.

2. In the Create Simple Corridor dialog box, for Name, enter 8th Avenue Corridor.


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3. Click OK.

Note: In the next few steps, you select the alignment, profile, and assembly from

a list. You can also select them graphically.

4. At the Select a Baseline Alignment prompt, press ENTER.

5. In the Select an Alignment dialog box, select 8th Avenue.

6. Click OK.

7. At the Select a Profile prompt, press ENTER.

8. In the Select a Profile dialog box, select the Design 1 profile.

9. Click OK.

10. At the Select an Assembly prompt, press ENTER.


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11. In the Select an Assembly dialog box, select 2 Lane Rural Assembly. Click OK.

You now assign targets to the subassemblies in the assembly. The Match Slope

Left and Right subassemblies need a target surface assigned.

12. In the Target Mapping dialog box, click in the Surfaces row, Object Name

column.

13. Select Existing Ground.

14. Click OK.

15. Click OK.

Civil 3D creates the corridor object.


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You now analyze the corridor using the Object Viewer.

16. In the drawing area, select the corridor.

17. Right-click and click Object Viewer.

Civil 3D displays the corridor in the Object Viewer window. You can use the

Object Viewer controls to view the corridor.

18. Change the view to SW Isometric.

19. Experiment with the other settings in the Object Viewer to view the corridor in

3D.


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Note: Do not click Set View. This button sets the drawing to the current view.

If necessary, you can restore the plan view with View menu > 3D Views > Top.

20. Close the Object Viewer window when you are done.

View/Edit Corridor Sections

You now view and edit the corridor sections.

1. Click Corridors menu > View / Edit Corridor Section.

2. At the Select a Corridor prompt, press ENTER.

3. In the Select a corridor dialog box, select 8th Avenue corridor. Click OK.

Civil 3D displays the View/Edit Corridor Sections Tools toolbar and displays the

first cross section.

4. On the toolbar, click and to show the other sections.

5. Change the station to 21+00 (Metric: 10+350).

Notice the superelevation on the cross section.


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6. Click to expand the toolbar.

7. Close the trees as shown.

8. Expand the Match Slope Right tree.

9. For Cut Slope, in the Value Column, enter 4. Press ENTER.

The selected check box and the word True in the Override column indicates that


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an override has been placed on the lane width. Note that the lane width updates

in the drawing area.

Now apply the override to a station range.

10. On the Toolbar, click Apply to a Station Range.

11. In the Apply to a Range of Stations dialog box, for End station, enter 2200

(Metric: 10500).

12. Click OK.

13. Close the View/Edit Corridor Section Tools toolbar.

14. Review the updated corridor model in the drawing area.



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EXERCISE 5: MODIFY THE CORRIDOR PROPERTIES

In this section, you change the design parameters by modifying the Corridor

properties.

Corridor regions are linear segments along a corridor to which an assembly is

applied. Every corridor region has a start station and end station. A corridor can

consist of several corridor regions.

When you modify the Corridor properties, you can specify the start and end station

for a corridor region.

The assembly insertion frequency is the interval at which the assembly is inserted to

create the corridor. You change the assembly insertion frequency when you modify

the Corridor properties.

The assembly insertion frequency can be modified for each corridor region.

Feature lines are the longitudinal lines along the corridor and are automatically

created by connecting the subassembly points. A feature line style is used to control

the display of the feature lines. When you modify the corridor properties, you can

turn feature lines on and off and assign feature line styles.


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1. Click the Prospector tab in the Toolspace window.

2. Expand the Corridors tree.

3. Right-click 8th Avenue Corridor. Click Properties.

4. In the Corridor Properties dialog box, click the Parameters tab.

The corridor uses the 2 Lane Rural Assembly north of the intersection of 8th

Avenue and Orchard Road. You now specify the station for the beginning of

the corridor.

5. Click the Select Station symbol in the Start Station column.

6. Using the Endpoint object snap, select the northwest corner of Parcel 1.


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Civil 3D changes the start station for the corridor.

Now rename the region.

7. In the Name column, click in the 1st row. Enter Baseline (1).

8. Click in Region (1). For Name, enter North of Orchard.

Note: An additional region could be added to the corridor south of Orchard that

uses a different assembly.


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9. Click OK.

Civil 3D recalculates the corridor. The corridor begins at the northwest corner

of Parcel 1.


You now modify the assembly insertion frequency. This is the interval at which

the assembly is inserted along the alignment to create the corridor.

11. Right-click and click Corridor Properties.

12. In the Corridor Properties dialog box, click the Parameters tab.

13. Click Set All Frequencies.


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14. For Along tangents, enter 50 (20 m).

15. For Along Curves, enter 20 (10 m).

16. For Along Spirals, enter 20 (10 m).

17. For Along Profile Curves, enter 20 (10 m).

18. Click OK.

19. Click OK to close the Corridor Properties window.

Civil 3D recalculates and displays the corridor with a new assembly insertion

frequency.

Now examine the corridor feature lines. The corridor feature lines represent the

longitudinal lines of the corridor model. You can control the appearance of the

feature lines.

20. Zoom to the corridor near the middle of the curve.


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21. Position the cursor over the Daylight feature line.

Note: The Daylight feature line is the location where the match slope for the

corridor meets the existing ground surface.

Notice that the feature line code is Daylight.

The feature line style controls the display of the corridor feature lines.

22. Select the corridor.


24. In the Corridor Properties dialog box, click the Feature Lines tab.

25. Click the Code column to sort the feature lines.

26. For the Daylight code, click Pick Style to the right of Corridor Daylight in the


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Feature Line Style column.

27. In the Pick Feature Line Style dialog box, select the Basic Feature Line style

from the list.

28. Click OK.

29. Clear the check marks for Daylight_Cut and Daylight_Fill.

30. Click OK.

Civil 3D redisplays the corridor and changes the appearance of the Daylight

feature line.

31. Click Undo to undo the changes to the corridor feature lines.



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EXERCISE 6: CREATE A CORRIDOR SURFACE

Corridor surfaces can be created from links or feature lines. Corridor surfaces are

most often created from the datum and top links.

The datum links are located on the bottom of the assembly and are used to create

a corridor datum surface. A corridor datum surface is used for calculating earth

cut and fill volumes.

The top links are located on the top of the assembly and are used to create a

corridor top surface. A corridor top surface can be used to:

Create 3D models of proposed roads.

Label design spot elevations and grades.

Calculate manhole rim and pipe invert elevations for pipe networks.

You can create a corridor surface when you modify Corridor properties.

When you create a corridor surface, you also specify a boundary. The boundary is

used to contain the surface triangulation within an external limit. Corridor datum

and top surfaces usually use the Corridor daylight feature line as a surface

boundary.


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In this exercise, you create Corridor top and datum surfaces.




First, create a corridor surface for the datum.



3. Right-click 8th Avenue corridor. Click Properties.

4. In the Corridor Properties dialog box, click the Surfaces tab.

5. Click Create a Corridor Surface.

6. Change the name to Datum.


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Now select the data to be used for the surface.

7. Ensure Data Type is Links.

8. For Code, select Datum.

9. Click Add Surface Item.

10. In the Pick Corridor Surface Style dialog box, select _Grid.

11. Click OK.

Civil 3D creates the corridor datum surface and displays it using the _Grid

Surface Style.


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Notice that the surface extends beyond the limit of the daylight lines.

An outer boundary is required to limit the surface extents to the daylight

lines. You define a boundary in the next few steps.

12. In Prospector, right-click 8th Avenue Corridor. Click Properties.

13. In the Corridor Properties dialog box, click the Boundaries tab.

14. Right-click Datum. Click Add Automatically > Daylight.

Civil 3D uses the Daylight feature lines as an outside boundary for the datum

surface.

15. Click OK.

Civil 3D displays the surface correctly.


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Now create a corridor surface representing the top or finished surface. You

follow the same procedures used to create the corridor datum surface.



18. Right-click 8th Avenue Corridor. Click Properties.

19. In the Corridor Properties dialog box, click the Surfaces tab.

First suppress the display of the corridor datum surface.

20. For Datum Surface, change Surface Style to _No Display.

Now create the Top surface.

21. Click Create a Corridor Surface.

22. Change the name of the new surface to Top.

23. Ensure Data Type is Links.

24. For Code, select Top.

25. Click Add Surface Item.

26. For Top surface, change the Surface Style to _No Display.


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Now add Outer Boundary for the Top surface.

27. Click the Boundaries tab.

28. Right-click Top. Click Add Automatically > Daylight.

29. Click OK.

Civil 3D creates the Top Corridor surface.

Note: The Top and Datum surfaces are not shown because they were

assigned the _No Display surface style.



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EXERCISE 7: PREPARE 3D MODEL OF FINISHED ROAD DESIGN

In this exercise, you create a 3D model of the completed road design. The 3D

model is represented by a surface that combines both existing ground surface data

and proposed corridor top surface data.

You first create an EG FG Combined surface.

The EG FG Combined surface is then modified by pasting the Existing Ground

surface and the corridor top. The Paste command combines the data from the two

surfaces.

In the final steps of this exercise, you assign a Code Set Style to the corridor links

that includes render materials.


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You can create photorealistic renderings of the corridor without creating corridor

surfaces.





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Create the EG FG Combined Surface

1. In Toolspace, click the Prospector tab.

2. Right-click Surfaces. Click Create Surface.

3. In the Create Surface dialog box:

For Name, enter EG FG Combined.

Change the Surface style to Contours 1’ and 5’ (Background) (Contours 1

m and 5 m (Background).

4. Click Apply.

5. Click OK.

Now suppress the display of the Existing Ground surface.

6. In Prospector, click Surfaces.

7. In the Item View area at the bottom of Toolspace, change Existing Ground

Style to _No Display.


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Paste the Existing Ground and Corridor Top Surface Into the EG FG

Combined Surface

1. In Prospector, expand the Surfaces, EG FG Combined, and Definition Trees

trees.

2. Right-click Edits. Click Paste Surface.

3. In the Select Surface to Paste dialog box, with the CTRL key pressed, select

Existing Ground and Top.

4. Click OK.

Civil 3D pastes the 8th Avenue Corridor Top Surface into the EG FG

Combined Surface.

5. Zoom to the 8th Avenue Corridor near the middle of the curve.


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Notice how the contours reflect the design elevations for 8th Avenue inside the

corridor daylight lines and the existing surface elevations outside the corridor

daylight lines.

6. In the drawing area, select the EG FG Combined Surface.

7. Click the surface. Right-click and click Object Viewer.

Civil 3D displays the surface in the Object Viewer.

8. In the Object Viewer, change the display mode to 3D Wireframe.

9. Use the tools in the Object Viewer to display the EG FG Combined in 3D.


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10. Close the Object Viewer.

Assign Render Material Styles to Corridor and Surface



3. In the Corridor Properties dialog box, click the Codes tab.

4. Change the Code Set Style to Rural Corridor Rendered.

5. Click OK.

Now assign a render material to the EG FG Combined surface.

6. In the drawing area, click the surface.

7. Right-click and click Surface Properties.

8. In the Surface Properties dialog box, click the Information tab.

9. Change Render Material to Sitework.Planting.Grass.Short.

The Render Material applies if you render the Existing Ground surface model.

10. Click OK.

11. In the drawing area, click the 8th Avenue Corridor.


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12. Right-click and click Object Viewer.

13. Change the display mode to Realistic.

14. Change the view to SW Isometric.

Civil 3D displays the rendered corridor and surface.

15. Experiment with other views in the Object Viewer.

16. Close the Object Viewer.



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Questions

1. What is the procedure for working with subassemblies to create an

assembly?

2. Why would you rename a subassembly on the tool palette?

3. What are subassembly input parameters used for?

4. What controls the display of subassembly and corridor points, links, and

shapes?

5. What are corridor feature lines and how are they created?

6. What can subassembly points be used for?

7. What can subassembly links be used for?

8. Why would you create a corridor top surface?

9. Why would you create a corridor datum surface?

10. What is target mapping?

Answers

1. You copy the desired subassemblies from the Subassembly Catalog to the

tool palette. You then modify the properties of the subassemblies on the

tool palette. Assemblies are created by adding subassemblies from the tool

palette to the assembly object.

2. You rename a subassembly on a tool palette to offer a simplified name to

the cross section elements.

3. Subassembly input parameters are used to vary the geometric properties of

the subassembly. Examples of input parameters include width, slope,

grade, depth, and material.

4. A marker style controls the display of subassembly/corridor points. A link

style controls the display of subassembly links and a shape style controls

the display of subassembly shapes.

5. The corridor feature lines are the longitudinal lines along the corridor.

They are created by connecting the subassembly points.

6. Subassembly points are used to create the corridor feature lines, annotate

offsets and elevations on design sections, and create Civil 3D points that

can be used for construction staking.


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7. Subassembly links can be used to create top and datum corridor surfaces,

annotate slopes and grades on design cross sections, and assign render

materials for photorealistic rendering.

8. Corridor top surfaces are used to create 3D models of a proposed road or

highway. They can also be used to calculate manhole rim and invert

elevations for storm and sanitary sewer networks.

9. A corridor datum surface is used to calculate earth cut and fill volumes.

10. Target mapping is the process of assigning targets to the subassemblies

when you create a corridor. For example, the daylight subassemblies use

required targets to indicate which surface to project the match slope. The

lane and shoulder subassemblies use optional targets to control widths with

alignments.


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Module Summary

In this module, you learned how to work with subassemblies, assemblies, and

corridors in AutoCAD Civil 3D. Subassemblies and their associated Help

documents were analyzed in the Subassembly Catalog. A tool palette was

created and the subassemblies were copied to the tool palette. The input

parameters for the subassemblies were modified and the subassemblies were

renamed on the tool palette.

You then created an assembly representing a typical section from the

subassemblies. You modified the assembly to apply meaningful names to the

assembly components.

The next step was to create the corridor model from the assembly. The

corridor model was created by specifying a design alignment, profile, and

assembly. After the corridor was created, you then modified the corridor

properties to change the station limits for the region and change the assembly

insertion frequencies.

The final steps in the module included building a top and datum corridor

surface, and creating and viewing a 3D model of the final road configuration.

Module 16 - West Virginia Universityddean/CE210/AutoCAD Civil 3D 2009... · Module 16 - Roadway ......

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