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Authorized Author

AutoCAD® 2014 Review for Certification

Cover Page

Official Certification Preparation

Revision 1.0September 2013

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ASCENT - Center for Technical Knowledge®

AutoCAD® 2014Review for Certification

Revision 1.0

ASCENT - Center for Technical Knowledge is a division of RAND Worldwide Inc., providing custom developed knowledge products and services for leading engineering software applications. ASCENT is focused on specializing in the creation of education programs that incorporate the best of classroom learning and technology-based training offerings.

We welcome any comments you may have regarding this training manual, or any of our products. To contact us please email: [email protected].

© ASCENT - Center for Technical Knowledge, 2013

All rights reserved. No part of this manual may be reproduced in any form by any photographic, electronic, mechanical or other means or used in any information storage and retrieval system without the written permission of ASCENT, a division of RAND Worldwide, Inc.

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Table of Contents

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Table of Contents

Preface ..................................................................................................vii

Class Files ............................................................................................. ix

Chapter 1 Altering Objects................................................................1-1

1.1 Stretch Objects ......................................................................1-3Stretching Objects ...................................................................1-3

1.2 Offset Objects ........................................................................1-5Offsetting Objects ....................................................................1-5

1.3 Create a Radius Between Objects........................................1-7Drawing Arcs ...........................................................................1-7Creating Fillets.........................................................................1-9

1.4 Trim and Extend Objects ....................................................1-12Trimming and Extending Objects...........................................1-12

1.5 Break and Join Objects.......................................................1-15Editing Polylines ....................................................................1-15Practice 1a Stretching Objects ............................................. 1-17Practice 1b Offsetting Objects .............................................. 1-19Practice 1c Drawing an Arc .................................................. 1-21Practice 1d Filleting Objects ................................................. 1-23Practice 1e Extending and Trimming Objects....................... 1-24Practice 1f Trimming Objects on a Drawing ......................... 1-25Practice 1g Drawing and Editing Polylines ........................... 1-26Practice 1h Break at Point .................................................... 1-29

Chapter 2 Annotations.......................................................................2-1

2.1 Work with Text .......................................................................2-3Adding Text in a Drawing.........................................................2-3Modifying Multiline Text ...........................................................2-7Changing Text Properties ........................................................2-8Formatting Multiline Text .......................................................2-11Creating Text Styles ..............................................................2-20

2.2 Set the Annotative Property for Objects ...........................2-23Working with Annotations ......................................................2-23

2.3 Create and Use Multileaders...............................................2-26Adding Notes with Leaders to Your Drawing .........................2-26Creating Multileader Styles....................................................2-33Practice 2a Adding Text in a Drawing................................... 2-37Practice 2b Modifying Multiline Text ..................................... 2-40Practice 2c Formatting Multiline Text in a Drawing............... 2-42Practice 2d Creating and Using Text Styles ......................... 2-46

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Practice 2e Adding Notes to Your Drawing .......................... 2-47Practice 2f Creating Multileader Styles................................. 2-50

Chapter 3 Create Template Content .................................................3-1

3.1 Create and Use Templates....................................................3-3Creating New Drawings With Templates .................................3-3Why Use Templates? ..............................................................3-6Controlling Units Display..........................................................3-8Creating New Layers .............................................................3-13Adding Standard Layouts to Templates.................................3-20Saving Templates ..................................................................3-27Practice 3a Using a Template to Start a Drawing................. 3-29Practice 3b Saving a Template............................................. 3-31

Chapter 4 Creating Additional Drawing Objects .............................4-1

4.1 Hide and Isolate Objects .......................................................4-3

4.2 Create Polylines.....................................................................4-4Drawing Polylines ....................................................................4-4

4.3 Edit Polylines .........................................................................4-7Editing Polylines ......................................................................4-7Practice 4a Drawing and Editing Polylines ........................... 4-12

Chapter 5 Dimensioning....................................................................5-1

5.1 Create Dimensions ................................................................5-3Adding Linear Dimensions.......................................................5-3Adding Radial & Angular Dimensions......................................5-7

5.2 Edit Dimensions...................................................................5-11Editing Dimensions ................................................................5-11

5.3 Work With Dimension Styles ..............................................5-18Dimensioning Concepts.........................................................5-18Creating Dimension Styles ....................................................5-19Practice 5a Adding Linear Dimensions (Architectural) ......... 5-28Practice 5b Adding Linear Dimensions (Mechanical) ........... 5-30Practice 5c Adding Radial & Angular Dimensions (Architectural). 5-32Practice 5d Adding Radial and Angular Dimensions (Mechanical) 5-33Practice 5e Editing Dimensions (Architectural)..................... 5-34Practice 5f Editing Dimensions (Mechanical) ....................... 5-35Practice 5g Creating Dimension Styles (Architectural) ......... 5-36Practice 5h Dimension Styles (Mechanical) ......................... 5-39

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Chapter 6 Drawing Organization and Inquiry Commands .............6-1

6.1 Calculate the Area of Objects...............................................6-3Measuring Objects...................................................................6-3

6.2 Change Object Properties...................................................6-10Working with Object Properties .............................................6-10

6.3 Use Layers............................................................................6-18What are Layers? ..................................................................6-18Layer States...........................................................................6-20Changing an Object’s Layer ..................................................6-22Practice 6a Architectural - Measuring Objects...................... 6-25Practice 6b Mechanical - Measuring Objects ....................... 6-26Practice 6c Mechanical - Working with Object Properties .... 6-28Practice 6d Architectural - Working with Object Properties .. 6-29Practice 6e Working with Layers and Layer States .............. 6-31Practice 6f Changing an Object’s Layer ............................... 6-34

Chapter 7 Hatching Objects ..............................................................7-1

7.1 Use Hatching..........................................................................7-3Hatching...................................................................................7-3Editing Hatches......................................................................7-12Practice 7a Hatching Using the Tool Palettes ...................... 7-17Practice 7b Hatching (Mechanical) ....................................... 7-18Practice 7c Hatching (Architectural) ..................................... 7-21

Chapter 8 Insert and Manage External References ........................8-1

8.1 Apply External References ...................................................8-3Attaching External References ................................................8-3Modifying External References................................................8-9Xref Specific Information........................................................8-19Practice 8a Attaching External References .......................... 8-24

Chapter 9 Isolate or Hide Displayed Objects...................................9-1

9.1 Isolate and Hide Objects .......................................................9-3Object Visibility ........................................................................9-3Practice 9a Object Creation, Selection, and Visibility ............. 9-5

Chapter 10 Manipulating Objects ...................................................10-1

10.1 Use Grips..............................................................................10-3Editing with Grips...................................................................10-3Using Grips Effectively...........................................................10-8

10.2 Copy, Move, Mirror, and Rotate Objects .........................10-14Moving Objects ....................................................................10-14Copying Objects ..................................................................10-16Rotating Objects ..................................................................10-18Mirroring Objects .................................................................10-19

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10.3 Use Selection Set Methods...............................................10-20Selecting Objects for Editing................................................10-20

10.4 Describe and Use Arrays ..................................................10-23Creating Arrays of Objects...................................................10-23

10.5 Use Rotation Reference Angles .......................................10-29Rotate and Scale with the Reference Option.......................10-29Practice 10a Editing with Grips (Basic)............................... 10-31Practice 10b Editing with Grips (Advanced) ....................... 10-32Practice 10c Using Grips Effectively................................... 10-34Practice 10d Modifying Objects .......................................... 10-35Practice 10e Selecting Objects........................................... 10-40Practice 10f Rectangular Array........................................... 10-41Practice 10g Polar Array..................................................... 10-42Practice 10h Path Array...................................................... 10-43

Chapter 11 Layouts and Visibility...................................................11-1

11.1 Create and Use Viewports ..................................................11-3Creating Layout Viewports.....................................................11-3Advanced Viewport Options ..................................................11-8Layer Overrides in Viewports...............................................11-14

11.2 Create and Use Layouts....................................................11-17Working in Layouts ..............................................................11-17Copying Layouts ..................................................................11-20

11.3 Create and Manage Layers ...............................................11-22Additional Layer Tools .........................................................11-22Creating New Layers ...........................................................11-29Practice 11a Viewports and Named Views......................... 11-37Practice 11b Working With Layouts.................................... 11-43Practice 11c Layer Tools .................................................... 11-48

Chapter 12 Printing and Plotting ....................................................12-1

12.1 Use Page Setup for Plotting ...............................................12-3Printing Layouts .....................................................................12-3Printing from the Model Tab ..................................................12-5Adding Standard Layouts to Templates.................................12-9Practice 12a Printing Layouts and Check Plots.................. 12-16

Chapter 13 Reusable Content .........................................................13-1

13.1 Create, Insert, and Edit Blocks...........................................13-3What are Blocks?...................................................................13-3Inserting Blocks .....................................................................13-5Working with Dynamic Blocks................................................13-7Inserting Blocks with DesignCenter .....................................13-11Inserting Blocks with Content Explorer ................................13-14Creating Blocks....................................................................13-17

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Editing Blocks ......................................................................13-22Adding Blocks to Tool Palettes ............................................13-25Practice 13a Working with Blocks....................................... 13-28Practice 13b Create and Edit Blocks .................................. 13-33Practice 13c Modifying Tool Properties .............................. 13-37

Appendix A Review Questions ........................................................ A-1

A.1 Skills Assessment ................................................................ A-3

Index............................................................................................. Index-1

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Preface

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Preface

The AutoCAD® 2014 Review for Certification book is intended

for users of AutoCAD® preparing to complete the AutoCAD 2014 Certified Professional exam. This book contains a collection of relevant instructional topics, practice exercises, and review questions from the Autodesk Official Training Guides (AOTG) from ASCENT - Center for Technical Knowledge pertaining specifically to the Certified Professional exam topics and objectives. This book is intended for experienced users of AutoCAD in preparation for certification. New users of AutoCAD should refer to the AOTG training guides from ASCENT, such as AutoCAD/AutoCAD LT 2014 Fundamentals, for more comprehensive instruction.

AutoCAD 2014 Certified Professional Exam Objectives

The following table provides the objectives to help you prepare for the AutoCAD 2014 Certified Professional exam.

Exam Topic Exam ObjectivesAltering Objects Stretch objects

Offset objects

Create a radius between objects

Trim and extend objects

Break and join objects

Annotations Work with text: text styles, text justification, and multi-line text

Set the Annotative property for objects

Create and use Multileaders

Create Template Content Create and use templates

Creating Additional Drawing Objects

Hide and isolate objects

Create polylines

Edit polylines

Dimensioning Create dimensions

Edit dimensions

Work with dimension styles

Drawing Organization and Inquiry Commands

Calculate the area of objects

Change object properties

Use layers

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Hatching Objects Use hatching

Insert and Manage External References

Apply External References

Isolate or Hide Displayed Objects

Isolate and hide objects

Manipulating Objects Use grips

Copy, Move, Mirror, and Rotate objects

Use selection set methods

Describe and use arrays

Use rotation reference angles

Layouts and Visibility Create and use Viewports

Create and use layouts

Create and manage layers

Printing and Plotting Use page setup for plotting

Reusable Content Create, insert, and edit blocks

Exam Topic Exam Objectives

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Chapter 1Altering Objects

This chapter includes instructional content and practices to assist in your preparation for the Altering Objects exam topic in the AutoCAD 2014 Certified Professional exam.

This chapter contains the following topics:

• Stretch Objects

• Offset Objects

• Create a Radius Between Objects

• Trim and Extend Objects

• Break and Join Objectsample

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1.1 Stretch Objects

StretchingObjects

The Stretch command enables objects and/or parts of objects to be moved and/or extended, leaving other objects and parts of objects stationary. The Stretch command essentially combines Move, Trim, and Extend into one command.

In architectural design, room sizes can be stretched to increase the square footage, as shown in Figure 1–1. In mechanical drafting, it might be necessary to stretch the length of a part in a drawing while leaving the width constant.

Figure 1–1

How To: Stretch Objects

1. Start the Stretch command.2. Use a Crossing selection to select the objects to stretch.3. Press <Enter> to finish the selection set.4. Select the base point (the handle by which you hold the

objects).

Certification

Topic:• Altering Objects

Objectives:• Stretch objects

Stretch

Ribbon: Home tab>Modify panel

Command Prompt: stretch or S

Before After

12’ x 8’8’ x 8’

Stretch 4’-0"

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5. Select the second point (which in conjunction with the base point defines the distance and direction to which you are stretching) or move your cursor in the direction you want to stretch and type a distance.

Notes on Stretching Objects

Objects to be stretched must be selected using the Crossing or Crossing Polygon selection method. A Crossing Polygon enables you to draw an irregularly shaped polygon by selecting each of the polygon’s vertices (it displays in green), as shown in Figure 1–2. Anything inside or touching the polygon is selected.

Figure 1–2

• How objects stretch is based on their end points. End points inside the crossing window move, while end points outside the crossing window remain stationary, and the objects adjust. Circles do not stretch because they do not have end points. Blocks do not stretch either.

• Objects outside the crossing window are unchanged.

• Objects crossing the crossing window are stretched or contracted accordingly.

• Objects inside the crossing window are moved.

• While Scale reduces or enlarges an entire object proportionately in all directions, Stretch only changes it in one direction.

• You can use (Polar Tracking) to assist in stretching vertically or horizontally.

When you select an object and then a grip the Stretch command is started by default. For more information on Grips refer to Chapter 10 Manipulating Objects.

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Altering Objects

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1.2 Offset Objects

OffsettingObjects

It is frequently necessary to construct an object that is parallel or concentric to another object, as shown in Figure 1–3. For example, you might need to create walls in a floorplan, a gasket used on a pipe flange, or a triple line border in a drawing. Rather than drawing each line separately, the AutoCAD software enables you to create parallel shapes with a single editing command called Offset.

Figure 1–3

• The Offset command works with lines, circles, arcs, and polylines.

• You can specify a distance between the original object and the offset copy, or select a point through which the copy passes.

How To: Offset Objects Using a Distance

1. Start the Offset command.2. Type the distance and press <Enter>.3. Select the object to offset.4. Hover the cursor on either side of the object to display a

preview of the offset copy.

Certification


Objectives:• Offset objects

Offset


Command Prompt: offset or O

Offset distance set to 6"

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5. Select a point on either side of the object to place the offset copy on that side.

6. Select another object to offset by the same distance, or press <Enter> to complete the command.

• To change the distance for a second offset, you must restart the command.

• If you want to offset one object multiple times, select the Multiple option before you select the side you want to offset. The new objects are placed at the same distance from the last object offset.

7. The Through option enables you to select a point that the offset object must pass through. You can drag the cursor on either side of the object to display a preview of the offset copy before placing the offset.

• The Erase and Layer options are settings that remain active until you change them. By default, objects from which you offset are not erased, and the layer of the new object matches the layer of the source object rather than the current layer.

• If you offset a polyline, all sides are offset equally, as shown in Figure 1–4. To only offset one side of a polyline, you need to explode it first.

Figure 1–4

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1.3 Create a Radius Between Objects

\

Drawing Arcs The Arc command is used to add curved segments to a drawing,

as shown in Figure 1–5. The AutoCAD® software generates arcs according to most geometric definitions. Which option to use in any given case depends on the information or geometry you have to begin with.

Figure 1–5

Certification


Objectives:• Create a radius between objects

Arc

Ribbon: Home tab>Draw panel

Command Prompt: arc or A

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Arc Command Options

The Arc command has a variety of options that enable you to easily create arcs, as shown in Figure 1–7.

Figure 1–7

• Expand (Arc) in the Draw panel to access the different arc construction options, as shown in Figure 1–6.

Figure 1–6

Start Starting point of an arc.

Center Center (or focal) point of an arc.

End Ending point of an arc.

Radius Radius of an arc.

Angle Included angle turned by an arc.

Direction Starting direction of an arc.

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Notes on Arcs

• Most arcs in the AutoCAD software are drawn in a counter-clockwise direction from the starting point.

• Pressing <Enter> at the Specify start point: prompt starts the Continue option. This starts the arc at the end point of the last line or arc segment drawn. (This feature is only available when the Specify start point: prompt is the first prompt for the type of arc being created.)

• The flyout in (Arc) in the Home tab>Draw panel provides the easiest access to the various arc options.

• You can also type, use the shortcut menu, or use the <Down Arrow> menu to access the arc options.

Creating Fillets Fillets are techniques used in mechanical production and

drafting. They have been expanded in the AutoCAD® software to create rounded corners. They can be used with standard mechanical drawings and with architectural drawings, as shown in Figure 1–8.

Figure 1–8

• The Fillet command creates rounded corners.

• Fillet can be used to clean up intersections without placing a radius or a bevel.

Chord (Length) Chord length of an arc. (Distance between arc start and end points.)

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Filleting Objects

The Fillet command modifies the intersection of two objects and can be used to create inside and outside rounded corners, as shown in Figure 1–9. It can also be helpful in cleaning up a drawing by forcing lines to meet at an exact intersection.

Figure 1–9

• The Radius option enables you to specify the fillet radius. This value should be selected and set before you pick the objects to fillet.

How To: Fillet Objects

1. Start the Fillet command.2. Check the current radius in the Command Line. If you need to

change it, select the Radius option and type the new radius.3. If you are filleting several sets of objects, select the Multiple

option.4. Select the first line that you want to fillet.5. Hover the cursor over the second line that you want to fillet. A

preview of the fillet displays.6. Select the second line.7. If you have selected the Multiple option, you can continue

selecting two lines to fillet until you press <Enter> to complete the command.

• A fillet with the Radius option set to 0 can be used to make lines meet at a square corner. You can also hold down <Shift> as you select the two lines without having to change the radius.

• You can fillet two parallel lines. In this case, the radius is automatically calculated so that the arc is tangent to both lines.

Fillet


Command Prompt: fillet or F

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• The Undo option undoes the last fillet without exiting the command.

• The Polyline option fillets all of the vertices of a selected polyline. You can still fillet one vertex by selecting segments to fillet.

• The Trim/NoTrim option determines whether selected lines are trimmed after the arc is added.

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1.4 Trim and Extend Objects

Trimming andExtending

Objects

Most objects are not drawn from the beginning with precise dimensions using commands, such as Line, Polyline, or Circle. Instead, they are constructed from a variety of objects that can then be modified with other commands to be the correct size, as shown in Figure 1–10. Trim and Extend are two useful commands for modifying objects.

Figure 1–10

Trimming Objects

The Trim command erases any part of an object that extends past a user-defined cutting edge. It simplifies many drawing tasks and can change the way you draw. For example, an easy way to create an arc is to draw and then trim a circle.

• To use Trim, you must first select a cutting edge in the drawing (i.e., something to trim against).

How To: Trim Objects

1. Start the Trim command.2. Select the cutting edges or press <Enter> to select all of the

edges.

Certification


Objectives:• Trim and extend objects

TrimRibbon: Home tab>Modify panel

Command Prompt: trim or TR

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3. If you selected specific edges, press <Enter> to end the selection of cutting edges.

4. Select the parts of objects that you want to remove by trimming.

5. Press <Enter> to complete the command.

Hint: Selecting Objects to Trim or Extend

Any method of object selection can be used to select the cutting or boundary edge(s). Objects to be trimmed or extended can be selected using the point-and-pick, Crossing, or Fence methods of object selection.

When you select the Crossing option, you are prompted to select two opposite corners, as shown in Figure 1–11. Everything touching or within the box is trimmed or extended as soon as you select the second corner. You remain in the command so that you can select more objects as needed.

Figure 1–11

When you select the Fence option, you are prompted to select fence points (similar to a polyline). Everything touching these line segments is selected to be trimmed. Press <Enter> when you have finished selecting points and want to display the trimmed object. You remain in the command so that you can select more objects as needed, as shown in Figure 1–12.

Figure 1–12

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• If you select something by mistake, you can use the Undo option within the command to restore the last object trimmed.

You can also click (Undo) in the Quick Access Toolbar for the Trim and Extend commands. However, doing so causes you to lose all of the trimming you have done to that point.

• At the Select object to trim: prompt, you can hold down <Shift> and select a line to extend rather than trim a line.

Extending Objects

The Extend command could be considered the opposite of Trim. With Extend, any object that does not reach a boundary edge is lengthened until it meets the boundary, as shown in Figure 1–13.

At the Select object to extend: prompt, you can hold down <Shift> to trim a line rather than extend it.

Figure 1–13

• To use Extend, you must first select a boundary edge in the drawing (i.e., something to which to extend to).

How To: Extend Objects

1. Start the Extend command.2. Select the boundary edges or press <Enter> to select all of

the edges. If you selected specific edges, press <Enter> to end the selection of boundary edges.

3. Select a point on the side of the object that is closer to the boundary edge or draw a crossing or fence across multiple objects.

4. Press <Enter> to complete the command.

Extend


Command Prompt: extend or EX

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1.5 Break and Join Objects

EditingPolylines

Polylines are powerful objects and can be edited in a number of ways. You can move an individual vertex, change the width, join polylines or lines and arcs together, and turn polylines into individual segments. You can also add and remove vertices from existing polylines and convert arcs to a line and vice-versa. The shortcut menu has options for modifying the vertices, including Break, Insert, Move, Straighten, Tangent, and Width.

• If you are editing an existing polyline, you can double-click on it or right-click and select Polyline>Edit Polyline to start the Edit Polyline command.

Modifying Polyline Vertices

If you select a polyline when you are not in a command, the vertices are displayed. You can modify them by adding or deleting vertices, stretching them, and converting them from a line to an arc and vice-versa. This is useful when modifying complex polyline objects. To access these options, select a vertex, right-click and select an option, as shown in Figure 1–14.

Alternatively, hover the cursor over a multifunctional vertex grip and, after a short delay, selecting an option in the list.

Figure 1–14

Certification


Objectives:• Break and join objects

Edit Polyline

Ribbon: Home tab>expanded Modify panel

Command Prompt: pedit or PE

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How To: Use Edit Polyline to Modify Vertices in Polylines

1. Start the Edit Polyline command.2. Select the polyline that you want to edit.3. Select the Edit Vertex option.4. An icon is displayed on the polyline, indicating the vertex that

is currently being edited. To select a different vertex, select the Next option until the one you want to edit is displayed.

5. Select one of the following options to modify the current vertex:

6. Use the Next and Previous options to continue modifying vertices. Select exit to return to the Edit Polyline command options, or press <Esc> to end the command.

Break Breaks the polyline at the selected vertex, separating it from the rest of the polyline. If you break a polyline at more than one place, the separated objects remain polylines.

Insert Inserts a new vertex at the selected point on the polyline. You can place the new vertex anywhere on the polyline.

Move Moves a vertex to a new position on the polyline. You can move the current vertex to a new location anywhere on the polyline.

Straighten Deletes segments and vertices between two selected vertices, and replaces them with a single straight line segment.

Tangent Attaches a tangent direction to the selected vertex to be used for curve fitting later.

Hint: Trimming Objects without Cutting Edges

The Break command can be used to cut an object without any overlapping edges. Two different options of the command are available in the Home tab>expanded Modify panel:

• (Break): Removes a portion of an object between two user-defined points, leaving a gap. This has the same effect as trimming between two cutting edges.

• (Break at Point): Breaks an object at one point so that it becomes two pieces, but does not have a gap. This option is useful if you need to change a portion of a line into a different linetype.

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Practice 1a Stretching ObjectsEstimated time for completion: 5 minutes

In this practice you will use the Stretch command to increase the width of the whole building and then increase the width of the office and reception area, as shown in Figure 1–15.

Figure 1–15

1. Open Class2-A.dwg from your class files folder. Distances in the drawing are in feet.

2. Toggle (Polar Tracking) on.

3. Start the Stretch command. At the Select objects: prompt, use a Crossing selection with corners at points A and B, as shown in Figure 1–15. Press <Enter>.

4. At the Specify base point: prompt, select a point near the upper right corner of the office. At the Specify second point: prompt, pull the pointer straight to the right, type 8’, and press <Enter>.

5. Start the Stretch command again. At the Select objects: prompt, use a Crossing selection with corners at points A and C. Press <Enter>.

* A

* B * C

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6. At the Specify base point: prompt, select a point near the upper right corner of the office. At the Specify second point: prompt, pull the pointer straight to the right, type 4’, and press <Enter>.

7. Save and close the drawing.

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Practice 1b Offsetting ObjectsEstimated time for completion: 10 minutes

In this practice you will use the Offset command on polylines, lines, and arcs to create walls and steps, as shown in Figure 1–16.

Figure 1–16

1. Open Offset-A.dwg from your class files folder. Distances in the drawing are in feet and inches.

2. Start the Offset command. Set the offset distance to 1’, and select the large polyline as the object to offset. Drag the cursor inside the polyline to display the preview of the offset copy.

3. At the Specify point on side to offset: prompt, select a point inside the polyline to create the offset copy on the inside. Press <Enter> to complete the command.

4. Start the Offset command. Set the offset distance to 1’6”, and select the yellow arc as the object to offset. Drag the cursor above the arc to display the preview. At the Specify point on side to offset: prompt, select a point above the arc to create the offset copy.

5. At the Select object to offset: prompt, select the arc you just created. At the Specify point on side to offset: prompt, select the Multiple option to make the command repeating. Select three points above the arcs to have a total of five arcs. Press <Enter> twice to complete the command.

6. Use the Explode command to turn the inner polyline you created into multiple single line objects.

7. Start the Offset command again, and set the offset distance to 15’. Select the inside vertical line on the left side as the object to offset. At the Specify point on side to offset: prompt, select a point to the right of the line.

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8. Using the Offset command again, create an offset line 6” to the right of the line you just created to make an interior wall.

9. Save and close the drawing.

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