2. EDUTAINMENT
(Learning – Fun)
For
Technical Education
In
Engineering Drawing
By
Guru Maa Foundation (Red.)
BLB
2 GMP
3. Animated Slide Show Presentation
For ENGINEERING DRAWING
By Guru Maa Foundation
Developed By
Prof. B. L. Bhatt (Lecturer D.J.S.C.E.)
Technical Coordinator
Shri G. M. Panchal (CAD Programmer S.B.M.P.)
BLB
3 GMP
4. An APPEAL
to avoid Piracy
This Low Priced Animated CD is
developed by Guru Maa Foundation
(Regd.No.284) for the Slow Learner
Students from Remote Areas who
can’t get Expert Professor’s Guidance.
Please encourage us by buying only
Original CD. This fund will be used for
future Development in Self Learning.
BLB
4 GMP
5. -:NOTE:-
Since Power Point is a
Presentation Package, there are
chances that some of the line
conventions are not as per
ISO, but it will not affect the
explanation and understanding
of the Engineering Drawing.
BLB
5 GMP
6. TYPES OF LINE
No. Line type Illustration Thickness
1) Construction line 0.1 to 0.2 mm Very light
projector
2) Leader line 0.2 to 0.3 mm Medium dark
Extension line
Section line
3) Visible 0.4 to 0.5 mm Dark
Object line
It is used for showing visible details of the object
4) Dimension Line THICKNESS NOT MORE THEN 1MM. 0.2 to 0.3 mm Medium dark
LENGTH 3 TO 4 mm.
Special care should be taken to draw arrow heads. It should be as dark as the dimension
line. Draw two lines of the arrow heads so close that their is no need to fill it with the pencil.
generally arrow heads becomes darker due to filling it with the pencil.
5) Center line, Axis 0.1 to 0.2 mm Medium darkt
The line of
Symmetry It is usually extended beyond the out line of the object
6) Dotted Line or 0.4 to 0.5 mm Dark
Hidden line
BLB
6 GMP
7. TIPS FOR LINE CONNECTION
Correct
Incorrect
Correct
Incorrect
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7 GMP
9. THEORY OF PROJECTION
Projector
F Pit
with Light rays cu
I re
light sc
L ree Picture
M n
Plane
Fig. 1 DISPLAY OF FILM
s
ay
tr
gh
Li
Picture plane
FR Source of Light
of projection ON
TV Object
IEW
L
H Fig. 2
Source of Light
at infinity L
H
Fig. 3
BLB
9 GMP
10. 4 QUADRANT THEORY
FOUR QUADRANTS
. TOP
/ V.P DIRECTION
F RP
I
Y
II
III X
H .P.
IV /
H RP
F
DIR RON
EC T
TIO
N
BLB
10 GMP
11. TOP 1st ANGLE
DIRECTION
Projection
.
V.P
1st QUADRANT
Y
H.P.
X
F
DIR RON
EC T
TIO
N BLB
11 GMP
12. 1st ANGLE PROJECTION
RIG
NE
LA HT
N TP R.P PR
OF
.P. X1
FRO ILEP
R
LO LA
NE
T ICA
V ER L.H.S.V.
F.V.
.
V.P
.
F.V
Y
X
L.H Y1
.S.
V.
T.V.
.
H.P
ARRAY OF VIEWS IN 1 ST ANGLE
T .V. NE
LA
LP
N TA X
RIZO
HO
OBSERVER BLB
12 GMP
13. 3rd ANGLE TOP
DIRECTION
Projection
H .P.
Y
X
3rd QUADRANT
F
DIR RON
. EC T
V.P TIO
N
BLB
13 GMP
14. 3rd ANGLE PROJECTION
A NE HP
PL
T AL
Z ON
RI
HO
X1
.
T.V
VP
LPP
T.V.
x Y
Y1
L.H.S.V. F.V.
S .V
. .
F.V
LE A NE
FT PL ARRAY OF VIEWS IN 3RD ANGLE
PR T
OF ON
ILE FR
R
PL
AN A LO
E T IC
V ER
X
OBSERVER BLB
14 GMP
15. Multiview Orthographic Projection
First angle Second angle Third angle Fourth angle
First angle orthographic projections : Refer figure Below:
1) The object is above H.P. and in front of V.P.
2) The plane of projection is behind the object.
3) The common line between H.P. and V.P. is known as X Y line.
4) The common line between V.P. and PP is known as X1 Y1 line.
5) All the planes are opaque and hinged to vertical plane as shown in the fig.
6) Front view shows Length and Height of the object. TOP
DIRECTION
7) Top view shows Length and Width of the object.
8) Side view shows Height and Width of the object.
.
V.P
1st QUADRANT
S.V. F.V. Y
P.
H.
X
F
DIR RON
EC T
TIO
T.V. N
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15 GMP
17. O
OBSERVER
GIVEN: PICTORIAL VIEW
DRAW: FRONT VIEW, TOP VIEW, AND BLB
LEFT SIDE VIEW IN 1st ANGLE PROJ. 17 GMP
18. t1L t1R
s1
f2 t2
s2 f1 1st ANGLE PROJ.
f2 s1 s2
O OBSERVER f1
Now start drawing Second
Follow the the Hidden
Lets DrawLeft Corner to
Accordinglyand Top Faces
Front, Sidesame method of
Draw First
Fix UpperFrontFace& &Width
Mark Max. Heightclear as
Level of Front get “f2” with
Edgesof Front Face “f1”
projection to View
in
are taggedto Develop the
Level with Ortho graphic F.V. L.S.V.
begin Refereeing the
L.S.V.V.facesproject origin 45
Top
ideaView & Left Side view.
for F.of most line at the
shown and
Bottom views i.e.
layout of Diagram
Dotted line
same through 45˚Line for
“O”. t1L
F.V.,T.V.,& L.S.V.
getting T. V. & L. S. V. t2
t1R
GIVEN: PICTORIAL VIEW
T.V.
DRAW: FRONT VIEW, TOP
VIEW, & LEFT SIDE VIEW 18 BLB
GMP
19. t1L t1R
s2 f1
s1
f2 t2 3rd ANGLE PROJ.
O OBSERVER
t1L
t2
Front, Side and Top Faces
Fix Upper Right Corner to
Lets start drawing First of
Now Draw same method
are tagged theget clear
begin the to Hidden
Followwith Ortho graphic
Mark Max. Length Second
Accordingly Draw & t1R
Level of Front Face “f1” with
Edges of views View &
projectionFrontFace “f2” as
in to Develop
layoutof Front i.e. the
Level
Width faces line at origin
idea offor T. V. and project 45
T.V.
Bottom most
L.S.V. Refereeing the
Top View & Left Side view.
the same through 45˚Line
F.V.,T.V.,& L.S.V.
shown line Diagram
“O”.
Dotted
for getting F. V. & L. S. V.
s1 f2 f1
s2
GIVEN: PICTORIAL VIEW
DRAW: FRONT VIEW, TOP
VIEW, & LEFT SIDE VIEW L.S.V. BLB
F.V. 19 GMP
