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An introduction to the subject Engineering Graphics for first year engineering students
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GOOD MORNING STUDENTS
FUNDAMENTALS OF ENGINEERING GRAPHICS
DRAWING INSTRUMENTS * DRAWING SHEETS * COMPUTER AIDED DRAFTING & MODELLING * DRAWING PROCESSES
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
DRAWING INSTRUMENTS
DRAWING INSTRUMENTS * DRAWING SHEETS * COMPUTER AIDED DRAFTING & MODELLING * DRAWING PROCESSES
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
INSTRUMENTS
INSTRUMENTS
INSTRUMENTS
INSTRUMENTS
INSTRUMENTS
INSTRUMENTS
INSTRUMENTS
INSTRUMENTS
INSTRUMENTS
INSTRUMENTS
INSTRUMENTS
INSTRUMENTS
INSTRUMENTS
INSTRUMENTS
INSTRUMENTS
INSTRUMENTS
DRAWING SHEETS
DRAWING INSTRUMENTS * DRAWING SHEETS * COMPUTER AIDED DRAFTING & MODELLING * DRAWING PROCESSES
DRAWING SHEET
DRAWING SHEET
DRAWING SHEETPaper 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
DRAWING SHEET
A4, A6, A2 A4, A5, A3
COMPUTER AIDED DRAFTING & MODELLING
DRAWING INSTRUMENTS * DRAWING SHEETS * COMPUTER AIDED DRAFTING & MODELLING * DRAWING PROCESSES
COMPUTER
P4 PROCESSOR1 GB RAM40 GB HARD DISK DRIVE17 inch MONITOR
SOFTWARE
AutoCADSolid WorksSolid EdgeCollabCAD
Think3
PLOTTER/PRINTER
DRAWING PROCESSES
DRAWING INSTRUMENTS * DRAWING SHEETS * COMPUTER AIDED DRAFTING & MODELLING * DRAWING PROCESSES
PROCESSES
LAYOUT - MARGINS & TITLE BLOCK LINE TYPES & TYPES OF LINES LETTERING & NUMBERING DIMENSIONING SCALE
_______ IS LONG_______ IS SHORT
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.
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
MARGINS
20 m
m
10 mm
10 mm
10 m
m
IS 10711 – 2001
MARGINS
TITLE
BLOCK
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 scalethe signature or initials of the approving officer
IS 11665 – 1985
120 mm
50 m
m
IS 11665 – 1985
TITLE
BLOCK
120 mm
KVCT Roll No. Name
Experiment Title
Ex. No.1
Sheet No.1/2
Scale1 : 1
Date30.08.2010
60 mm 60 mm
20 mm
20 mm
10 mm
30 mm IS 11665 – 1985
TITLE
BLOCK
IS 10714 – 1983
MARGIN LINEOBJECT LINECENTRE LINEPROJECTION LINEDIMENSION LINELEADER LINEHIDDEN LINESECTION LINEGUIDE LINE
TYPES
OF
LINES
TYPE DESCRIPTION APPLICATION PENCIL
Continuous Thick
Object Lines or Visible Edges, Margins
HB
Continuous Thin Dimension Lines, Leader Lines, Projection LinesGuidelines
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 PlaneSection Lines
2H
IS 10714 – 1983
LINE
TYPES
LETTERING & NUMBERING
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 LettersIS 9609 – 1983
I AM ________________
IS 9609 – 1983
I LIKE KVCT. IT IS GOOD
I HAVE TO PAY RATHNAVEL 1000 RS.
LETTERING & NUMBERING
DIMENSIONING
IS 11669-1986IS 10718-1983
40 mm
80 mm
The art of indicating dimensions on the drawing to define geometric characteristics such as lengths, breadths, heights, diameters, location of holes etc.
IS 11669-1986IS 10718-1983
DIMENSIONING
DIMENSION VALUES
DIMENSION LINE
PROJECTION LINE
ARROW HEAD
LEADER LINEIS 11669-1986IS 10718-1983
DIMENSIONING
IS 11669-1986IS 10718-1983
DIMENSIONING
IS 11669-1986IS 10718-1983
DIMENSIONING
IS 11669-1986IS 10718-1983
METHODS OF PLACEMENT OF DIMENSIONS
Aligned SystemUni Directional System
Types of DimensioningChain Dimensioning
Parallel DimensioningProgressive DimensioningCo-ordinate Dimensioning
Combined DimensioningEqual Dimensioning
DIMENSIONING
SCALES
DEFINITION
SCALESFull ScaleReducing ScaleEnlarging Scale
STANDARD SCALES
RF
THANKS &
TEST
