An introduction to the subject Engineering Graphics for first year engineering students

1. GOOD
MORNING
STUDENTS

2. FUNDAMENTALS OF
ENGINEERING GRAPHICS
DRAWING INSTRUMENTS * DRAWING SHEETS *
COMPUTER AIDED DRAFTING & MODELLING * DRAWING PROCESSES

3. METHODS OF DRAWING & NEEDS
S.No. Method Needs
1 Free Hand Sketching Drawing Sheet, 4 Instruments
2 Manual Drafting Drawing Sheet, 15 Drawing
Instruments
3 Computer Aided Drafting Drawing Sheet, Computer, Software.
Printer
4 Computer Aided Modelling Computer, Software

4. DRAWING INSTRUMENTS
DRAWING INSTRUMENTS * DRAWING SHEETS *
COMPUTER AIDED DRAFTING & MODELLING * DRAWING PROCESSES

5. METHODS OF DRAWING & NEEDS
D R A _ I N G _ O A R D
D R A _ T E _ F R E N C _ C _ R V E S
S _ A L E / R _ L E R T E M P L A _ E / S T E N C _ L
S _ T S Q _ A R E F A S T E N _ _ S
P R O T R _ _ T O R _ E N C _ L
P R O _ I R C _ E _ R A S E _
C O M P _ S _ S H A R P E N _ R
D _ V _ D E R D _ S T _ R

6. INSTRUMENTS

7. INSTRUMENTS

8. INSTRUMENTS

9. INSTRUMENTS

10. INSTRUMENTS

11. INSTRUMENTS

12. INSTRUMENTS

13. INSTRUMENTS

14. INSTRUMENTS

15. INSTRUMENTS

16. INSTRUMENTS

17. INSTRUMENTS

18. INSTRUMENTS

19. INSTRUMENTS

20. INSTRUMENTS

21. INSTRUMENTS

22. DRAWING SHEETS
DRAWING INSTRUMENTS * DRAWING SHEETS *
COMPUTER AIDED DRAFTING & MODELLING * DRAWING PROCESSES

24. DRAWING SHEET

25. DRAWING SHEET

26. DRAWING SHEET
Paper Size in mm Use
A0 841 x 1149 Cinema Posters
A1 594 x 841 Flip Charts, Newspapers
A2 420 x 594 Engineering Drawings, Flip Charts
A3 297 x 420 Local Posters, Engineering Drawings
A4 210 x 297 Letters, Printouts, Common Purposes etc.
A5 148 x 210 Note Pads
A6 105 x 148 Bills
A7 74 x 105 Index Cards
A8 52 x 74 Playing Cards

27. DRAWING SHEET
A4, A6, A2 A4, A5, A3

28. COMPUTER AIDED
DRAFTING & MODELLING
DRAWING INSTRUMENTS * DRAWING SHEETS *
COMPUTER AIDED DRAFTING & MODELLING * DRAWING PROCESSES

29. COMPUTER
P4 PROCESSOR
1 GB RAM
40 GB HARD DISK DRIVE
17 inch MONITOR

30. SOFTWARE
AutoCAD
Solid Works
Solid Edge
CollabCAD
Think3

31. PLOTTER/PRINTER

32. DRAWING PROCESSES
DRAWING INSTRUMENTS * DRAWING SHEETS *
COMPUTER AIDED DRAFTING & MODELLING * DRAWING PROCESSES

33. PROCESSES
 LAYOUT - MARGINS & TITLE BLOCK
 LINE TYPES & TYPES OF LINES
 LETTERING & NUMBERING
 DIMENSIONING
 SCALE

34. _______ IS LONG
_______ IS SHORT

35. INTRODUCING BIS
1. IS 10711 – 2001: Technical products Documentation – Size and lay out of drawing sheets
2. IS 9609 (Parts 0 & 1) – 2001 :Technical products Documentation – Lettering.
3. IS 10714 (Part 20) – 2001 & SP 46 – 2003: Lines for technical drawings.
4. IS 11669 – 1986 & SP 46 - 2003 : Dimensioning of Technical Drawings.
5. IS 15021 (Parts 1 To 4) – 2001: Technical drawings- Projection Methods.

36. Margins are available for all sheets from
A0 to A8 for both portrait & landscape
orientations
A4 Sheets in Portrait Orientation will be
used for our drawings
The minimum margin size for A4 sheets
is 10 mm
IS 10711 – 2001
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37. 20mm
10 mm
10 mm
10mm
IS 10711 – 2001
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38. T
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The title block is a rectangular block normally placed in
the bottom right of the drawing sheet to provide the
following information
the name of the company or organization
the title of the drawing
the drawing no.
the scale
the signature or initials of the approving officer
IS 11665 – 1985

39. 120 mm
50mm
IS 11665 – 1985
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40. 120 mm
KVCT
Roll No. Name
Experiment Title
Ex. No.
1
Sheet No.
1/2
Scale
1 : 1
Date
30.08.2010
60 mm 60 mm
20 mm
20 mm
10 mm
30 mm IS 11665 – 1985
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41. IS 10714 – 1983
MARGIN LINE
OBJECT LINE
CENTRE LINE
PROJECTION LINE
DIMENSION LINE
LEADER LINE
HIDDEN LINE
SECTION LINE
GUIDE LINE
T
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42. TYPE DESCRIPTION APPLICATION PENCIL
Continuous Thick Object Lines or
Visible Edges,
Margins
HB
Continuous Thin Dimension Lines,
Leader Lines,
Projection Lines
Guidelines
2H
Short Dashed Hidden Lines or
Invisible Edges
H
Long Chain Thin Centre Lines or
Lines of Symmetry
2H
Long Chain Thick
at Ends & Thin
elsewhere
Cutting Plane
Section Lines
2H
IS 10714 – 1983
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43. L
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 The writing of titles, sub titles, dimensions, notes
& other important particulars is called lettering &
numbering
Lettering should be by single stroke Gothic Letters
Lettering & Numbering – Vertical & Inclined
Lettering & Numbering – Type A & Type B
Height of Lettering
Spacing
Correct Use of Letters
IS 9609 – 1983

44.  I AM ________________
IS 9609 – 1983
 I LIKE KVCT. IT IS GOOD
 I HAVE TO PAY RATHNAVEL 1000 RS.
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45. D
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IS 11669-1986
IS 10718-1983
40 mm
80 mm

46. The art of indicating dimensions on the drawing
to define geometric characteristics such as
lengths, breadths, heights, diameters, location
of holes etc.
IS 11669-1986
IS 10718-1983
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47. DIMENSION VALUES
DIMENSION LINE
PROJECTION LINE
ARROW HEAD
LEADER LINE IS 11669-1986
IS 10718-1983
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48. IS 11669-1986
IS 10718-1983
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49. IS 11669-1986
IS 10718-1983
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50. IS 11669-1986
IS 10718-1983
METHODS OF
PLACEMENT OF DIMENSIONS
Aligned System
Uni Directional System
Types of Dimensioning
Chain Dimensioning
Parallel Dimensioning
Progressive Dimensioning
Co-ordinate Dimensioning
Combined Dimensioning
Equal Dimensioning
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51. S
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DEFINITION
SCALES
Full Scale
Reducing Scale
Enlarging Scale
STANDARD SCALES
RF

52. THANKS
&
TEST