Fundamentals of Autocad Civil 3d 2011

AutoCAD Civil 3d 2011 Made Easy

BY ING. BERNARD OWUSU

TABLE OF CONTENTS

CHAPTER ONE ....................................................................................................................................1

INTRODUCTION .................................................................................................................................1

1.1 Objectives...................................................................................................................................... 1

1.2 Starting .......................................................................................................................................... 1

CHAPTER TWO .............................................................................................................................................. 2

WORKING WITH THE SURVEY TAB ................................................................................................................ 2

2.1 CREATING A SURVEY FIGURE ........................................................................................................ 2

CHAPTER THREE .................................................................................................................................9

WORKING WITH POINTS ....................................................................................................................9

3.1 Creating a Description Key Set ...................................................................................................... 9

3.2 IMPORTING POINTS .................................................................................................................... 13

CHAPTER FOUR ................................................................................................................................ 16

SURFACES ........................................................................................................................................ 16

4.1 CREATING SURFACES .................................................................................................................. 16

4.2 EDITING SURFACES ...................................................................................................................... 17

CHAPTER FIVE .................................................................................................................................. 19

ALIGNMENT ..................................................................................................................................... 19

5.1 THE ALIGNMENT CREATION ........................................................................................................ 19

5.2 MODIFYING AN ALIGNMENT ...................................................................................................... 20

5.3 ADDING SUPERELEVATION TO AN ALIGNMENT ......................................................................... 22

CHAPTER SIX .................................................................................................................................... 23

PROFILE ........................................................................................................................................... 23

6.1 CREATING SURFACE PROFILE ...................................................................................................... 23

6.2 VERTICAL ALIGNMENT ................................................................................................................ 24

CHAPTER SEVEN ............................................................................................................................... 26

CORRIDOR ....................................................................................................................................... 26

7.1 ASSEMBLY ................................................................................................................................... 26

7.2 CREATE CORRIDOR ...................................................................................................................... 30

AutoCAD Civil 3d 2011 Made Easy By Ing. Bernard Owusu

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CHAPTER ONE

INTRODUCTION

1.1 Objectives

By the end of this lecture you should be able to

1. Create a Survey Figure

2. Create Description Key set

3. Import points

4. Build a surface

5. Create a Horizontal Alignment

6. Create a Surface profile

7. Create a Vertical Alignment

8. Create an Assembly

9. Build a Corridor

1.2 Starting

1. After the installation of the software you should see the icon Autocad Civil 3d Metric on

your desktop (or go to programs, Autodesk, AutoCAD civil 3d 2011 and select AutoCAD

Civil 3d Metric).

2. Double click to start the program

3. Click on the 3d button on the top corner left

a. Click on new

b. Select AutoCAD Civil 3D (Metric) NCS template


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CHAPTER TWO

WORKING WITH THE SURVEY TAB

2.1 CREATING A SURVEY FIGURE

A survey figure comprises of all data picked by the surveyor that you (the designer) wants to

display as stringed objects.

Example

a. Existing Road Edge

b. Road Centreline

c. Buildings

d. Culverts

e. Bridges

f. Drain

g. Curb etc.

To accomplish this we need

1. A figure style

2. Figure prefix database

Figure Style

1. On Toolspace click on settings

2. Go to survey and click the + button before Figure Styles

3. By default you will have some styles form which you can adopt or modify to suit your

condition.

a. To create a new Figure style

Right Click on Figure styles and select new

b. To Edit a Figure style

Right click on the Figure style (e.g. Basic, buildings etc) and select edit

c. To create a new style from an existing style

Right click on the Figure style (e.g. Basic, buildings etc.) and select copy


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Figure prefix database

The figure prefix database is a unique file which processes survey data to create figures

A typical survey data will have a column for description

E.g.

PT NO. N E Z D

1 204276.330 409127.716 200.682 DRN

2 204301.305 409049.936 202.933 BD20

3 204296.787 409091.214 202.159 RDR

4 204293.487 409095.620 201.998 RDL

5 204856.014 409177.111 201.747 WALL

6 204265.247 409171.631 198.441 CUL

Any point that we will therefore want to create a figure from will have its code captured under

the Figure prefix database.

On Toolspace click on survey

1. Right click on Figure prefix database

2. Select new and name your Figure prefix database

3. Click on the + button before Figure Prefix Databases

You will see your new database created

Right click on your database and select “Manage Figure prefix Databases”

You should see something like this;


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click on to create a new item

The style consists of all the Figure styles created earlier on.

An example of a completed Figure prefix database looks like this;

Importing survey data

On Toolspce click on survey


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Editing Survey user setting

Click on and do the necessary settings in the dialogue box which opens

Creating a Survey Database

1. Right click on Survey Databases and name it (I normally use the name of the project to

name this file)

2. Right Click on your database and click open for edit (if closed)


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3. Right click and select edit survey data base settings

After the settings you can export this information to a specified location by clicking on

this file can then be specified under the Survey Database Defaults so that there will be no need

to always repeat this process.

Creating a network

You should know that without a network you can’t import a survey data.

A survey network is a series of interconnected lines that represent the observed instrument

setups, or stations. It contains all associated known control points, known directions, setups,

and observations.

Typically for an ongoing road project the designer will be receiving survey data in sections.

For example km0-5, km5-10.

The network can therefore be named after these sections.


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To create a new network;

Right click on Networks under the created survey database

The created network appears under Networks.

We are now ready to import our data.

1. Right click on your network and select import –import point file

2. A window opens for you to select your point ASCII file (eg. Km0-50.csv)

3. An import file window opens


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4. Choose your point file format

5. Set the figure prefix database

6. Check yes for process Linework during import and insert figure objects

7. Select OK.

NOTE

PT NO. N E Z D

1 204276.330 409127.716 200.682 DRN

2 204301.305 409049.936 202.933 BD20

3 204296.787 409091.214 202.159 RDR

4 204293.487 409095.620 201.998 RDL

5 204856.014 409177.111 201.747 WALL

6 204265.247 409171.631 198.441 CUL

1. The above ASCII file will have a point file format PNEZD

2. The header row should be deleted before importing data.


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CHAPTER THREE

WORKING WITH POINTS

3.1 Creating a Description Key Set

A description Key set is a set of codes (is part of the drawing file) with specified style, point label

style and format. A description key consists of a code and a set of additional properties. When

the code is matched, the other properties specified in the description key are applied to the

point when it is created.

The description key set therefore governs how imported points should display in the drawing.

NB. Every point will have a

1 Marker

2 Description

3 Layer

The above can be customized by the user to suit his/her condition.

Before creating a description key set we need

1. A Point Style

2. Label Style

Point style

1. On Toolspace click on setting and click the +button before Point.

2. Click the +button before Point Style. The default Point styles are displayed.


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3. To create a new style right click on Point Styles and select new

4. To edit or copy an existing Point Style right click on the Point Style and select copy and edit

respectively.

Label Style


2. Click the +button before Label Style. The default Label styles are displayed.

3. To create a new style right click on Label Styles and select new

4. To edit or copy an existing Label Style right click on the Label Style and select copy and edit

respectively.


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We are now ready to build our Description key set


2. Click the +button before Description Key Sets

3. A default key set by name Civil 3D opens.

4. You can build upon this or create your own by right clicking on Description Key Sets and

selection new.

5. Right Click on Description key set and select new.

6. Name your Description Key set in the window that opens.

7. Right click on your created Key set and select edit keys.

8. A panorama window opens for you to build you Description Key Set


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Code

Use the code property of a description key to specify which raw descriptions match the

description key.

The following are sample description key codes:

Description

Key Code Function

T# Matches descriptions that consist of T followed by one digit, such as T1, T2,

through T9.

STA#

Matches descriptions that consist of STA followed by one digit, such as STA1,

STA2, through STA9. It does not match the description STA, since STA is not

followed by a digit.

T## Matches descriptions that consist of T followed by 2 digits, such as T01 through

T99.

1@

Matches descriptions that consist of 1 followed by an alphabetic character, such

as 1A, 1B, and 1C. It does not match the description 1, since 1 is not followed by

an alphabetic character.

T. Matches descriptions that consist of T followed by a single non-alphanumeric

character, such as T- and T+.

T* Matches descriptions that consist of T followed by any number of characters,

such as T1, TOPO, T-2, and TREE.

Point Style

Specifies the point style to be referenced by a point that is created using the description key.

To specify a point style:

Select the Point Style check box.

Click in the cell to open the Point Style dialog box. Select a point style.

Point Label Style

Specifies the point label style to be referenced by a point that is created using the description

key.


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To specify a point label style:

Select the Point Label Style check box.

Click in the cell to open the Point Label Style dialog box. Select a point label style.

A completed Description key set will look like this

3.2 IMPORTING POINTS

1. On Toolspace click on prospector and right click on point and select create.


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2. A create point window opens for you to choose how you are going to create you points

3. We will be importing an ASCII file so we click on the button.

4. A window opens for you to select your point file format, point file and whether if you

will want to add your points to a point group.

5. Click on Ok when done

NB.

It is always advisable to add points to a point group to make editing and creating of surface very

easy.

For example;

Point file for Survey pillars will be given a special point group name

For an on-going project with continue inflow of survey data will all be put under

separate point groups.

To create a point group

1. Check the


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2. Click the at the end of

3. A window opens for you to name your point group

An added advantage of a point group is that you can exclude some points that you will not want

to use to build your surface.

Right click on the created point group and select properties.

A window opens

Select Exclude

Check with raw description matching

Input the codes that you will want to exclude from your Point Group. (if more than one,

separate them with a comma)


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CHAPTER FOUR

SURFACES

4.1 CREATING SURFACES

With our point file imported under point groups we are now ready to create our surface from

these point groups.

NB. You can create a surface directly from an ASCII file.

1. On Toolspace select prospector and right click on surfaces.

2. Select create surfaces

3. A window opens for you to name your surface and to give it a style


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Our surface at this stage is empty and contains no data.

We will add our point groups

1. Click the +button before Surfaces, our created surface, definition and select Point Groups

2. Clicking on Add allows you to select the point group you will want to use to build your

surface

3. When done click OK and your surface is built automatically.

4.2 EDITING SURFACES

You can control how points are used to build surfaces.

1. Right click on your surface and select Surface Properties.

2. Click the + Button before Build and undertake the necessary editing.


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3. Choose Yes for “use maximum triangle length” and use a figure say 100m for the “maximum

triangle length”

4. Choose Rebuild the surface in the window that opens after clicking on OK


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CHAPTER FIVE

ALIGNMENT

Alignment objects can represent centerlines, lanes, shoulders, rights-of-way, or construction

baselines. Creating and defining the horizontal alignment is one of the first steps in roadway,

railroad, or site design.

5.1 THE ALIGNMENT CREATION

The Alignment Creation Tools can be found under the Create design Column on the Ribbon

Clicking on the drop-down will display this dialogue box to choose how you are going to create

your alignment

We will select Alignment creation Tools for the purpose of this study.

Another dialogue box opens for you to;


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Name your alignment

Define the Type of Alignment

Starting Station

Use a Design criteria

Alignment Style

Alignment Label set

When done click OK

A tool for Alignment creation opens for you to create your alignment

This toolbar provides two types of alignment creation tools:

Freehand drawing tools for lines, curves, and spirals.

Constraint-based tools that define individual entities by parameters such as length and

radius.

You can get tutorials on the various creation method by going to Tutorials under Help (click F1

on your key board whilst AutoCAD Civil 3D 2011 is running) and choosing Alignment Tutorials.

5.2 MODIFYING AN ALIGNMENT

Click on the Alignment

The Ribbon changes to look like this


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1. To edit the geometry

Click on Geometry editor to open the Alignment Creation tool to enable you edit

your Alignment

Click on to open a the Alignment Layout Parameter window

Click on on the Alignment creation tool to select the entity you want to edit.

Its parameters are displayed in the Alignment Layout Parameter window

2. To Add Autocad lines and arcs to your alignment

Click on and select the entity you want to convert


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5.3 ADDING SUPERELEVATION TO AN ALIGNMENT

Click on Superelevation and select calculate/edit superelevation

Select the alignment

This window opens

Select Calculate superelevation now

Another window opens for you to specify how the superelevation should be applied.


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CHAPTER SIX

PROFILE

6.1 CREATING SURFACE PROFILE

Use this to create your existing ground profile

Click on profile under Create Design on the Ribbon

Choose create surface profile

Select alignment

Add the surface to create the profile from and click on Draw in profile view


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The Actions to be taken under this section are displayed on the left

When done click on

Specify on the screen where you want your profile to be displayed

6.2 VERTICAL ALIGNMENT

Click on and select profile creation tools

Select the profile view you will want to create your vertical alignment on

This window opens for you to;

Name your Alignment


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Specify whether you will want to use a Design Criteria

Specify Profile Style

Specify Profile Label Set

The Profile Layout Tools opens for you to do your vertical alignment design

NB

The usage of the Profile layout Tools is similar to that of the Horizontal Alignment

discussed in Chapter 5.

Modifying is also similar to the Horizontal Alignment discussed in Chapter 5.


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CHAPTER SEVEN

CORRIDOR

Three things are needed to create a corridor.

1. A baseline (Horizontal Alignment)

2. A profile (Vertical Alignment)

3. An assembly (Cross section)

The creation of a horizontal and a vertical alignment as already been treated.

We shall therefore show how to create an assembly

7.1 ASSEMBLY

Under Create Design click on Assembly and select create assembly

The create Assembly window opens for you to

Name your assembly

Specify your Assembly Style

Specify your Code set style

Click OK.


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When the ‘Specify assembly baseline location’ prompt is displayed on the command line, click

in the rectangle under the profile views.

The viewport zooms to the assembly baseline, which looks like this:

Add a lane subassembly

1. If the Tool Palette containing the subassemblies is not visible, click Home tab>Palettes

panel>Tool Palettes .

2. In the tool palette, right-click the Tool Palettes control bar. Click Civil Metric

Subassemblies.

3. Click the Lanes tab.

4. Click LaneOutsideSuper.

5. In the Properties palette, under ADVANCED, specify the following parameters:

6. Side: Right

7. Width: 3.5

8. In the drawing, click the marker point on the assembly baseline.

9. The right lane subassembly is now attached to the assembly baseline.

Add a curb subassembly

1. In the Tool Palettes window, on the Curbs tab, click UrbanCurbGutterGeneral.

2. In the drawing, click the marker point at the top-right edge of the travel lane.


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Note

If you attach the subassembly to the wrong marker, you can move it to the correct location.

Press Esc to exit subassembly placement mode. Select the subassembly you wish to move. A

blue grip is displayed when the subassembly is selected. Select the grip, and then click the

correct marker point.

Add a sidewalk subassembly

1. In the Tool Palettes window, on the Basic tab, click Basic Sidewalk.


Side: Right

Width: 1.5

Buffer Width 1: 0.5

Buffer Width 2: 0.5

3. In the drawing, click the marker point at the top, back of the curb.


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Add a daylight subassembly

1. In the Tool Palettes window, on the Basic tab, click BasicSideSlopeCutDitch.


Side: Right

Cut Slope: 2.000:1

Fill Slope: 4.000:1

3. In the drawing, click the marker point at the outside edge of the sidewalk subassembly.

Press Esc.

This action ends the subassembly placement command.

Mirror the subassemblies to the left of the baseline

1. In the drawing, select the four subassemblies you added.

2. Right click. Click Mirror.


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3. Click the marker point on the assembly baseline.

The subassemblies are displayed on the left side of the assembly marker. The Mirror

command creates a mirror image of the selected subassemblies. All the subassembly

parameters, except for the Side parameter, are retained.

Note

The parameters of the mirrored subassemblies are not dynamically linked. If you change a

parameter value for a subassembly on one side of the assembly baseline, the change will not be

applied to the opposite side.

7.2 CREATE CORRIDOR

Click on corridor and select create corridor.

Select your baseline alignment, profile and assembly to complete your corridor creation.

Fundamentals of Autocad Civil 3d 2011

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