1. BMayer@ChabotCollege.edu ENGR-22_Lec-02_ACAD_Intro.ppt 1 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics Bruce Mayer, PE Licensed Electrical & Mechanical Engineer BMayer@ChabotCollege.edu Engineering 22 Introduction to AutoCAD ©

2. BMayer@ChabotCollege.edu ENGR-22_Lec-02_ACAD_Intro.ppt 2 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics What are the “C”, “A”, and “D”?  CAD Stands for One of Computer Aided Design – The More Typical Definition Computer Aided Drafting  Sometimes See CADD or CAE Computer Aided Drafting & Design – Covers Both Bases Computer Aided Engineering – Typically CADD + Numerical-Analysis

3. BMayer@ChabotCollege.edu ENGR-22_Lec-02_ACAD_Intro.ppt 3 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics Elements of a CAD System  Computer; e.g., DeskTop PC  Input Devices; e.g., mouse, KeyBd  OutPut Devices; e.g., Plotter, Printer  Operating Software; e.g. WindowsXP, Mac OSX, Unix, Linux  CAD/CAE Application Software e.g., AutoCAD, TurboCAD, ProE, SolidWorks, many others

4. BMayer@ChabotCollege.edu ENGR-22_Lec-02_ACAD_Intro.ppt 4 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics CAD Software  Common Basic Elements Commands to generate geometry – Makes Mathematically Accurate Lines, Curves, Surfaces, Volumes, etc. Functions for controlling views Modifiers for changing drawing geometry Annotation commands for adding text, dimensions, and notes  The use of CAD has Revolutionized Engineering Graphics

5. BMayer@ChabotCollege.edu ENGR-22_Lec-02_ACAD_Intro.ppt 5 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics Rm 1618 CAD Lab  Room 1618 Contains the Computers and AutoCAD2006 Software  The CADLab Operates in OPEN Fashion ENGR22 Students can Use it AnyTime it is Open ENGR22 Students Do NOT have Priority over other Users – except During ENGR22 Lab when ENGR22 Has Top Priority

6. BMayer@ChabotCollege.edu ENGR-22_Lec-02_ACAD_Intro.ppt 6 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics Rm 1618 CAD Lab cont  The “OnDuty” CADLab Supervisor Can Assist with OPERATION of the Lab, Computers or AutoCAD e.g., He/She can show you how toTurn on AutoCAD, print, etc. He/She May NOT be able to help with questions related to Course CONTENT  BMayer on OnDuty per Syllabus CAN Assist with Course Content

7. BMayer@ChabotCollege.edu ENGR-22_Lec-02_ACAD_Intro.ppt 7 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics Starting AutoCAD  Turn on one of the rm1618 Computers  DoubleClick the AutoCAD Icon  Should Bring Up the AutoCAD WorkSpace

8. BMayer@ChabotCollege.edu ENGR-22_Lec-02_ACAD_Intro.ppt 8 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics AutoCAD WorkSpace Status LineCoOrd Display Command Line Cursor Object Properties TB Standard TB PullDown Menus Drawing TB Layer TB Modify TB Drawing Area

9. BMayer@ChabotCollege.edu ENGR-22_Lec-02_ACAD_Intro.ppt 9 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics AutoCAD ToolBars: Move/Size  ACAD ToolBars Can Moved and Sized using the Same Techniques as with other MSWindows Applications

10. BMayer@ChabotCollege.edu ENGR-22_Lec-02_ACAD_Intro.ppt 10 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics ReSize CommandLine Box Resize Using Double-Bar Cursor Recommend Minimum 2-Lines High

11. BMayer@ChabotCollege.edu ENGR-22_Lec-02_ACAD_Intro.ppt 11 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics ToolBars Described  AutoCAD ToolBars Behave in the Same Manner as other Windows-Apps ToolBars Each Icon is called a “Tool” Allowing the Cursor to “Linger over a Tool Brings up a Descriptive “ToolTip”

12. BMayer@ChabotCollege.edu ENGR-22_Lec-02_ACAD_Intro.ppt 12 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics Start a NEW Drawing  Start a New Drawing by One of PullDown Menus: File → New... Using the “QNew” (QuickNew) Tool Type “new” in the Command Line

13. BMayer@ChabotCollege.edu ENGR-22_Lec-02_ACAD_Intro.ppt 13 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics Select Template Dialog-Box Appears After the New File Command(s) A Template is a Standard format For Now Suggest Using the acad.dwt Template Click Open to Start the New Drawing

14. BMayer@ChabotCollege.edu ENGR-22_Lec-02_ACAD_Intro.ppt 14 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics Name & Save Drawing  Opening a NEW Drawing Results in a Default Name of Drawing N.dwg  Use File → Save or The Save-Tool to Give the Dwg a new Name  Naming AutoCAD Files NOT Case Sensitive Any Combination of Letters and Numbers – Also Allowed = $, -, _ Not Allowed = \, /, %, *

15. BMayer@ChabotCollege.edu ENGR-22_Lec-02_ACAD_Intro.ppt 15 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics AutoCAD Drawing Units  “ACAD” Has Five Unit-Systems Each has Five Formatting Parameters  To Adjust the Unit System Use the PullDown Menu Format → Units...

16. BMayer@ChabotCollege.edu ENGR-22_Lec-02_ACAD_Intro.ppt 16 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics Format Units  The Drawing Units Dialog Box  In ENGR22 We will Typically Use for Length Units Type → Decimal Insertion Scale → one of – Inches (in or “) – Millimeters (mm) Precision – in → 0.00 or 0.000 – mm → 0 or 0.00

17. BMayer@ChabotCollege.edu ENGR-22_Lec-02_ACAD_Intro.ppt 17 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics Format Units cont  In ENGR22 We will Typically Use for Angle Units Type → Decimal Degree Precision → 0 or 0.0 CounterClockwise

18. BMayer@ChabotCollege.edu ENGR-22_Lec-02_ACAD_Intro.ppt 18 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics Standard Paper Sheet Sizes  USA Standards (in) A = 8.5x11 (1.29 AR) B = 11x17 (1.55 AR) C = 17x22 (1.29 AR) D = 22x34 (1.55 AR) E = 34x44 (1.29 AR)  Notes Nice, Round No.s Inconsistent Aspect Ratios (ARs)  ISO 216 Paper (mm) A4 = 210x297 (1.41 AR) A3 = 297x420 (1.41 AR) A2 = 420x594 (1.41 AR) A1 = 594x841 (1.41 AR) A0 = 841x1189 (1.41 AR)  Notes UNround Numbers Constant Aspect Ratio =  2

19. BMayer@ChabotCollege.edu ENGR-22_Lec-02_ACAD_Intro.ppt 19 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics Drawing Limits  In ENGR22 HardCopy Output will done on “A-size” (8.5” x 11”) Paper  ACAD Drawing Limits set the Boundaries The “Limits” Usually Set to Match the Paper Size  Example: Set Drawing Limits 1.Open a New Drawing using acad.dwt 2.Use the PullDown Menu: Format → Drawing Limits...

20. BMayer@ChabotCollege.edu ENGR-22_Lec-02_ACAD_Intro.ppt 20 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics Drawing Limits cont – Brings up notation in Command Line 3.Accept the Lower- Left at by hitting Enter – Brings the Next Query into the Command Line 4.Enter 11, 8.5 and hit Enter to set the Upper Right Limit

21. BMayer@ChabotCollege.edu ENGR-22_Lec-02_ACAD_Intro.ppt 21 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics Grid & Snap  Grid is just a visual aid for your drawing  Snap allows you to specify precise coordinates when using the mouse  They are modified with the GRID and SNAP commands  Neither affect anything already drawn  They can be changed on-the-fly  Function keys set GRID and SNAP  “modes”: on and off  F7 - Sets GRID mode on/off  F9 - Sets SNAP mode on/off

22. BMayer@ChabotCollege.edu ENGR-22_Lec-02_ACAD_Intro.ppt 22 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics Grid & Snap  acadiso.dwt Limits (420,297)  Grid set to 10 mm  Snap set to 20mm

23. BMayer@ChabotCollege.edu ENGR-22_Lec-02_ACAD_Intro.ppt 23 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics Example → 1st Drawing 1.Fire up AutoCAD 2.Make a new Drawing using acad.dwt 3.Save the File as YourName-01.dwg e.g.; BMayer- 01.dwg 4. Make a NEW LAYER Called “Object” Click

24. BMayer@ChabotCollege.edu ENGR-22_Lec-02_ACAD_Intro.ppt 24 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics 1st Drawing cont Pick the GREEN Box and then click OK Type “Object” Click “Color → white”

25. BMayer@ChabotCollege.edu ENGR-22_Lec-02_ACAD_Intro.ppt 25 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics 1st Drawing cont Set the “Object” Layer to Current Double click the “Status” box Set the “Object” Layer to Current using Status box Click OK 6.Use the drawing Tools to make some Shapes & Lines that Fill a significant Portion of the screen 5.Hit the Save tool

26. BMayer@ChabotCollege.edu ENGR-22_Lec-02_ACAD_Intro.ppt 26 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics 1st Drawing cont Drawing ToolBar Save Again

27. BMayer@ChabotCollege.edu ENGR-22_Lec-02_ACAD_Intro.ppt 27 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics 1st Drawing cont 7.Use the Pull Down Menu: Draw → Text → Multiline Test... 8.Drag the mouse to form an “MTEXT” Box Activates the “Text Formatting” Box 9.In the Format Box Change the Text Size to 15-25 Or Whatever fits your dwg

28. BMayer@ChabotCollege.edu ENGR-22_Lec-02_ACAD_Intro.ppt 28 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics 1st Drawing cont MTEXT Box Change to 25

29. BMayer@ChabotCollege.edu ENGR-22_Lec-02_ACAD_Intro.ppt 29 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics 1st Drawing cont 10.Click in Inside the MTEXT Box and Type Your HW-ID Fname Lname Date Class ID = ENGR22 HW ID = HW-nn 11.Click OutSide the MTEXT Box to DeActivate 12.Hit Save, yet again

30. BMayer@ChabotCollege.edu ENGR-22_Lec-02_ACAD_Intro.ppt 30 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics 1st Drawing cont 13.In the Command Line type zoom, then Hit Enter 14.At the Query Prompt the letter “ e ” (for “extents”) Then Hit Enter  Your Drawing will Zoom in to Fill the Screen

31. BMayer@ChabotCollege.edu ENGR-22_Lec-02_ACAD_Intro.ppt 31 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics 1st Drawing cont zoom → extents

32. BMayer@ChabotCollege.edu ENGR-22_Lec-02_ACAD_Intro.ppt 32 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics 1st Drawing cont 15.Use the PullDown Menu: File → Plot Activates the Plot Dialog Box

33. BMayer@ChabotCollege.edu ENGR-22_Lec-02_ACAD_Intro.ppt 33 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics 1st Drawing cont  ASK the CAD-Lab Supervisor about the PROPER Settings to Obtain an A-Size (8.5x11) PrintOut 16.In the Print Dialog Box click OK 17.Pick up your Copy and you’re done

34. BMayer@ChabotCollege.edu ENGR-22_Lec-02_ACAD_Intro.ppt 34 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics All Done for Today See Me in rm 1618 Lab For Plotting Tutorial

35. BMayer@ChabotCollege.edu ENGR-22_Lec-02_ACAD_Intro.ppt 35 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics Bruce Mayer, PE Licensed Electrical & Mechanical Engineer BMayer@ChabotCollege.edu Appendix Engineering 22

36. BMayer@ChabotCollege.edu ENGR-22_Lec-02_ACAD_Intro.ppt 36 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics ISO 216 Paper Size System In the ISO paper size system, the height-to-width ratio of all pages is the square root of two (1.4142 : 1). This aspect ratio is especially convenient for a paper size. If you put two such pages next to each other, or equivalently cut one parallel to its shorter side into two equal pieces, then the resulting page will have again the same width/height ratio. The ISO paper sizes are based on the metric system. The square-root-of-two ratio does not permit both the height and width of the pages to be nicely rounded metric lengths. Therefore, the area of the pages has been defined to have round metric values. The height divided by the width of all formats is the square root of two (1.4142). Format A0 has an area of one square meter.

37. BMayer@ChabotCollege.edu ENGR-22_Lec-02_ACAD_Intro.ppt 37 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics Comments Viewing AR’s  Humans have Much Greater Lateral Peripheral Vision than Vertical Suggests that “Wide Screens” Are Better  Some Viewing Aspect Ratios 1.25:1 = 8x10 photo 1.33:1 = NTSC TV Screen 1.78:1 = HDTV (Movie Compatible) 1.85:1 = “Academy Flat” Movie 2.35:1 = “Panavision” Movie