1. BMayer@ChabotCollege.edu ENGR-22_Lec-23_Working_Drawings-2.ppt 1 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics Bruce Mayer, PE Licensed Electrical & Mechanical Engineer BMayer@ChabotCollege.edu Engineering 22 Working Drawings-2

2. BMayer@ChabotCollege.edu ENGR-22_Lec-23_Working_Drawings-2.ppt 2 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics Standard Borders  Almost All Engineering Firms Have Some Standard/Default Elements That are Included in all Engineering Drawings  These Elements are incorporated into Standard “Borders & Title-Blocks” When you First Go to Work for a Design Firm find the standard “Border” or “Frame” and make sure you understand the meanings of the all the elements

3. BMayer@ChabotCollege.edu ENGR-22_Lec-23_Working_Drawings-2.ppt 3 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics Example of Std Border Remember This?

4. BMayer@ChabotCollege.edu ENGR-22_Lec-23_Working_Drawings-2.ppt 4 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics Anatomy of a Working Dwg Rev. Block Note Block Zone No. Zone Ltr. On-Dwg BoM Title Block FOIA Disclaimer Note Indicator BoM BallTag

5. BMayer@ChabotCollege.edu ENGR-22_Lec-23_Working_Drawings-2.ppt 5 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics Anatomy of a Working Dwg Section/View Line Zone Block Detail Bubble Separate-Sheet Parts List

6. BMayer@ChabotCollege.edu ENGR-22_Lec-23_Working_Drawings-2.ppt 6 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics Anatomy of a Title Block  Drawing Title Block  Release Block  Tolerance Block  Matl-Spec Block  BoM Table Headings  Company ID Block  Drawing Number  Revision Level  Dwg Sheet Size  Dwg Scale  Dwg Sheet: No. & Cnt  Co. Division ID

7. BMayer@ChabotCollege.edu ENGR-22_Lec-23_Working_Drawings-2.ppt 7 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics Zoning & Reving Zone 7B (or B7)

8. BMayer@ChabotCollege.edu ENGR-22_Lec-23_Working_Drawings-2.ppt 8 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics Notes & Comments - 1  Revisions Must be Carefully Documented; Especially if they affect Form (physical Shape) Fit (mounting, or interface locations) Function (how it works)  Zoning on Sections & Details is Optional for 1 or 2 sheet drawings  Rev’s should be Zoned UnLess meaning is “obvious”

9. BMayer@ChabotCollege.edu ENGR-22_Lec-23_Working_Drawings-2.ppt 9 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics Notes & Comments - 2  Show Parts & Assemblies in their most “Natural” Position as implied by function or Mounting  Part Number Formats Vary Widely Watkins-Johnson Co. → –967852 or 984377-003 Olympus Japan → SS0251E0 Dawn VME → 11-1011310-12

10. BMayer@ChabotCollege.edu ENGR-22_Lec-23_Working_Drawings-2.ppt 10 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics Drawing SCALE Interpretation  Typical Scale CallOut SCALE 1:16 Length On DRAWING Length in REAL WORLD Example: Length In REAL WORLD = 73.75”

11. BMayer@ChabotCollege.edu ENGR-22_Lec-23_Working_Drawings-2.ppt 11 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics Architect/CE Scale Example  Recall Scale Definition Size on DRAWING Size in REAL WORLD  Example - Given Scale: 2” = 1’-0” Drawing Size → Scaling UP Find

12. BMayer@ChabotCollege.edu ENGR-22_Lec-23_Working_Drawings-2.ppt 12 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics mm Scale Example  A Scale DOWN Example Given Scale: 1mm = 30mm Use TAPE MEASURE to Determine Real World Size = 6810 mm (22.34 ft)  Calculate Length of this Line on DWG

13. BMayer@ChabotCollege.edu ENGR-22_Lec-23_Working_Drawings-2.ppt 13 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics Drawing SCALE Alternative  Some Other Common Scale CallOuts SCALE 1=10 or SCALE 1/4 Length in REAL WORLD Length On DRAWING  Watkins-Johnson  Olympus

14. BMayer@ChabotCollege.edu ENGR-22_Lec-23_Working_Drawings-2.ppt 14 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics The Std Chabot Engr Dwg Frame

15. BMayer@ChabotCollege.edu ENGR-22_Lec-23_Working_Drawings-2.ppt 15 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics Using The Drawing Frame  The Chabot Engineering Drawing Frame Should be used for Formal Engineering Drawings  The FRAME should be SCALED Up or Down to fit the FULL SCALE Object i.e., the OBJECT is Drawn at 1:1, then the Frame-Border is adjusted to fit

16. BMayer@ChabotCollege.edu ENGR-22_Lec-23_Working_Drawings-2.ppt 16 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics 1st vs. 3rd Angle Projection Projection Box 1st-Ang. Note Front Surface is Projected BACKWARDS 1st Ang Proj Front V Lside V Top V 1st Angle (Europe) Frontal Pln Front V. Profile Pln Lside V. Horizontal Pln Top V. Profile Pln Lside V. Frontal Pln Front V. 3rd Angle USA, Asia

17. BMayer@ChabotCollege.edu ENGR-22_Lec-23_Working_Drawings-2.ppt 17 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics 1 St Angle Projection  The USA Conventionally Uses the So- Called “THIRD” Angle Projection Produced by Unfolding the “Glass Box”  The European “FIRST” Angle Convention Essentially Projects the SHADOW of An Object Projected Onto a Screen BEHIND it.  The 3rd Angle (USA type) Technique is Much More Intuititive

18. BMayer@ChabotCollege.edu ENGR-22_Lec-23_Working_Drawings-2.ppt 18 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics 1st Angle Projection  Note Rearward Projectors “Opposite” Positioning of the Views

19. BMayer@ChabotCollege.edu ENGR-22_Lec-23_Working_Drawings-2.ppt 19 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics Who’s on First, I-Don’t-Know’s On Third (c.f. Abott & Costello) “Third Angle Projection” Symbol Appears in Almost all Dwg Title Blocks FIRST Angle Proj THIRD Angle Proj

20. BMayer@ChabotCollege.edu ENGR-22_Lec-23_Working_Drawings-2.ppt 20 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics 1 st & 3 rd Angles Summarized  In FIRST-ANGLE projection, each view of the object is projected in the direction (sense) of sight of the object, onto the interior walls of the box  In THIRD-ANGLE projection, each view of the object is projected opposite to the direction (sense) of sight, onto the (transparent) exterior walls of the box

21. BMayer@ChabotCollege.edu ENGR-22_Lec-23_Working_Drawings-2.ppt 21 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics All Done for Today Projection Quadrants ReVealed

22. BMayer@ChabotCollege.edu ENGR-22_Lec-23_Working_Drawings-2.ppt 22 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics Bruce Mayer, PE Licensed Electrical & Mechanical Engineer BMayer@ChabotCollege.edu Engr/Math/Physics 25 Appendix 

23. BMayer@ChabotCollege.edu ENGR-22_Lec-23_Working_Drawings-2.ppt 23 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics Using Std Frame Demo - 1 1.Open Title Block Chabot_TitleBlock_ D_BMayer_050909.DWG 2.Save Std Border as 987654- 321_Weld_Assy.D WG 3.Open Design File Example_Insert_int o_Dwg- Border_90661201. DWG 4.Zoom Out 0.3x 5.Make Rectangle around object 6.EyeBall to see if HEIGHT or WIDTH will be Frame Scaling Factor Choose WIDTH 6.Use DIST to Measure Rectangle Width at ≈ 91.5

24. BMayer@ChabotCollege.edu ENGR-22_Lec-23_Working_Drawings-2.ppt 24 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics Using Std Frame Demo - 2 7.Zoom in On Border 8.Erase the Unneeded Objects & Notes Leaves Clean Border Template 9.Measure “Working (open) Width” of Border at ≈32 10.Calc ScaleUp MIN Factor at 91.5/32 =2.86 11.Allow 10% on Each side for Working ScaleUp Factor 2.86*1.2 = 3.43 Use 3.5

25. BMayer@ChabotCollege.edu ENGR-22_Lec-23_Working_Drawings-2.ppt 25 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics Using Std Frame Demo - 3 12.ScaleUp Border by 3.5x using Bot-Rt pt with NODE opt 13.Move Rect & WeldFrame Block- Contents to Expanded Border 14.Erase Rectangle 15.Enter Object BoM into Frame Bom Note that Obj BoM is NOT Scaled Same as Broder This is a Good Reason for Putting BoM separate Sht 16.Copy (type) 4 items from Ylw BoM into Border BoM Copy at least one BoM Line

26. BMayer@ChabotCollege.edu ENGR-22_Lec-23_Working_Drawings-2.ppt 26 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics Using Std Frame Demo - 4 17.Fill In Title Block Using Double-Click to Activate AttEdit p/n = 987654-321 Scale: 1 = 3.5 18.Fill in Rev Block Show Rev.0 as initial Release per ECO 007536 19.Erase Unused Rev Lines 20.Move Border & Contents to 0,0 Use Lower-Lt Node

27. BMayer@ChabotCollege.edu ENGR-22_Lec-23_Working_Drawings-2.ppt 27 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics Demo Result

28. BMayer@ChabotCollege.edu ENGR-22_Lec-23_Working_Drawings-2.ppt 28 Bruce Mayer, PE Engineering 22 – Engineering Design Graphics A Cool Assy